WO2024068344A1 - Photonische integrierte schaltung mit verstärkungsmedium und optoelektronische vorrichtung - Google Patents
Photonische integrierte schaltung mit verstärkungsmedium und optoelektronische vorrichtung Download PDFInfo
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- WO2024068344A1 WO2024068344A1 PCT/EP2023/075698 EP2023075698W WO2024068344A1 WO 2024068344 A1 WO2024068344 A1 WO 2024068344A1 EP 2023075698 W EP2023075698 W EP 2023075698W WO 2024068344 A1 WO2024068344 A1 WO 2024068344A1
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- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/0632—Thin film lasers in which light propagates in the plane of the thin film
- H01S3/0637—Integrated lateral waveguide, e.g. the active waveguide is integrated on a substrate made by Si on insulator technology (Si/SiO2)
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- H01S3/09—Processes or apparatus for excitation, e.g. pumping
- H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
- H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
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- H01S3/102—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the active medium, e.g. by controlling the processes or apparatus for excitation
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Definitions
- Semiconductor lasers based, for example, on the GaN material system or the InGaAlP material system are widely used as narrow-band light sources.
- concepts are being sought with which laser beams can be generated in a large wavelength range and with a larger spectral bandwidth.
- the present invention is based on the object of providing an improved photonic integrated circuit and an improved optoelectronic device.
- a photonic integrated circuit comprises a pump laser diode configured to emit pump radiation, and a gain medium suitable for absorbing the pump radiation and emitting laser radiation.
- the photonic integrated circuit further includes a waveguide suitable for supplying the pump radiation to the gain medium.
- the photonic integrated circuit further includes a first and a second resonator mirror, one of which is arranged in a light path between the pump laser diode and the gain medium and another on a side of the gain medium facing away from the pump laser diode, wherein an optical resonator is formed between the first and the second resonator mirror.
- the pump laser diode may have an active region containing a GaN-containing semiconductor material.
- the reinforcing material is a crystalline reinforcing material containing lithium fluoride.
- the gain medium contains LiLuF4 or LiRhF4.
- the gain medium can be doped with side earth ions.
- the gain medium is embedded in a cladding material having a smaller refractive index than the refractive index of the gain medium.
- the cladding material is arranged on side surfaces of the gain medium parallel to an extension direction of the optical resonator.
- the cladding material is made up of the material of the gain medium and is undoped.
- the cladding material may further adjoin the waveguide.
- the photonic integrated circuit may further comprise a ring resonator which is arranged in a light path behind the gain medium and which is suitable for filtering the laser radiation emitted by the gain medium.
- the photonic integrated circuit can further contain an active optical element that is suitable for changing an emission spectrum of the photonic integrated circuit.
- the gain medium is divided into at least a first and a second section, which are arranged along a direction that intersects a direction of the pump radiation.
- the photonic integrated circuit can be designed to be particularly compact.
- a material of the first section can be different from a material of the second section.
- the materials of the first and second sections can be selected so that that laser radiation with slightly different wavelengths is emitted through the two sections. In this way, speckles can be avoided or suppressed.
- the photonic integrated circuit may further comprise a mirror adapted to direct laser radiation emitted from the first portion into the second portion.
- a photonic integrated circuit comprises a pump laser diode which is designed to emit pump radiation, a first gain medium which is suitable for absorbing the pump radiation and emitting first laser radiation, a first and a second resonator mirror, one of which is arranged in a light path between the pump laser diode and the first gain medium and another on a side of the first gain medium facing away from the pump laser diode, wherein a first optical resonator is formed between the first and the second resonator mirrors.
- the photonic integrated circuit further comprises a second optical resonator with an associated first and a second resonator mirror and a second gain medium which is arranged in the second optical resonator and is suitable for absorbing the pump radiation and emitting second laser radiation with a wavelength which is different from the wavelength of the first laser radiation.
- the photonic integrated circuit further comprises an optical switch which is suitable for selectively supplying pump radiation to the first or the second optical resonator.
- the first and the second gain medium can have an identical base material with a different dopant.
- the base material may contain crystalline lithium fluoride.
- An optoelectronic device comprises the photonic integrated circuit as described above.
- the optoelectronic device can be selected, for example, from a sensor and AR/VR data glasses.
- Fig. 1 shows a schematic cross-sectional view of a photonic integrated circuit according to embodiments.
- Fig. 2A shows a schematic cross-sectional view of a photonic integrated circuit according to further embodiments.
- Fig. 2B shows a schematic top view of a photonic integrated circuit according to embodiments.
- Fig. 3 shows a gain medium embedded in a cladding material.
- Fig. 4A shows a schematic top view of a photonic integrated circuit according to further embodiments.
- Fig. 4B shows a schematic cross-sectional view of the photonic integrated circuit shown in Fig. 4A.
- Fig. 5A shows a schematic cross-sectional view of a photonic integrated circuit according to embodiments.
- Fig. 5B shows a schematic top view of a photonic integrated circuit according to embodiments.
- Fig. 5C shows a cross section through a first and a second gain medium embedded in a cladding material.
- Fig. 6A shows a schematic top view of a photonic integrated circuit according to embodiments.
- Fig. 6B shows a cross-sectional view of the photonic integrated circuit shown in Fig. 6A.
- Fig. 7 shows a schematic view of an optoelectronic device according to embodiments.
- Wafer or “semiconductor substrate” used in the following description can include any semiconductor-based structure having a semiconductor surface. Wafer and structure are to be understood as including doped and undoped semiconductors, epitaxial semiconductor layers, optionally by a base support, and further semiconductor structures. For example, a layer of a first semiconductor material may be grown on a growth substrate of a second semiconductor material, for example a GaAs substrate, a GaN substrate or a Si substrate, or of an insulating material, for example on a sapphire substrate.
- a growth substrate of a second semiconductor material for example a GaAs substrate, a GaN substrate or a Si substrate, or of an insulating material, for example on a sapphire substrate.
- the semiconductor can be based on a direct or an indirect semiconductor material.
- semiconductor materials particularly suitable for generating electromagnetic radiation include in particular nitride semiconductor compounds, by means of which, for example, ultraviolet, blue or longer-wave light can be generated, such as GaN, InGaN, AlN, AlGaN, AlGalnN, AlGalnBN, phosphide semiconductor compounds, by means of which, for example, green or longer-wave light can be generated, such as GaAsP, Al-GalnP, GaP, AlGaP, and other semiconductor materials such as GaAs, Al-GaAs, InGaAs, AlInGaAs, SiC, ZnSe, ZnO, Ga2Ü3, diamond, hexagonal BN and combinations of the materials mentioned.
- the stoichiometric ratio of the compound semiconductor materials can vary.
- Other examples of semiconductor materials can include silicon, silicon-germanium and germanium. In the context of the present description, the term "semiconductor"
- substrate generally includes insulating, conductive or semiconductor substrates.
- lateral and horizontal as used in this specification are intended to describe an orientation or alignment that is substantially parallel to a first surface of a substrate or semiconductor body. This can be, for example, the surface of a wafer or a chip (die).
- the horizontal direction can, for example, lie in a plane perpendicular to a growth direction when growing layers.
- the term "vertical" as used in this description is intended to describe an orientation that is substantially perpendicular to the first surface of a substrate or semiconductor body.
- the vertical direction may, for example, correspond to a growth direction when growing layers.
- Fig. 1 shows a schematic cross-sectional view of a photonic integrated circuit 10 according to embodiments.
- the photonic integrated circuit or laser device 10 comprises a pump laser diode 100 with an active zone 103.
- the active zone 103 comprises a GaN-containing semiconductor material according to embodiments. According to further embodiments, the active zone may also contain one or more other semiconductor materials that are different from GaN. Specific examples are mentioned above.
- the pump laser diode 100 is configured to emit pump radiation 11.
- the photonic integrated circuit 10 further comprises a gain medium 105 which is suitable for absorbing the pump radiation 11 and emitting laser radiation 12.
- the gain medium 105 may contain lithium fluoride.
- the photonic integrated circuit 10 comprises a first and a second resonator mirror 108, 109, one of which is arranged in a light path between the pump laser diode 100 and the gain medium 105.
- a further resonator mirror 109 is arranged on a side of the gain medium 105 facing away from the pump laser diode 100.
- An optical resonator 110 is formed between the first and the second resonator mirror 108, 109.
- pump laser diode can include both edge-emitting and, for example, surface-emitting semiconductor lasers with a vertical cavity (“VCSEL").
- VCSEL vertical cavity
- the term "pump laser diode” can include a single diode element or an arrangement of individual diode elements. As shown in Fig. 1, the pump laser diode 100 can have a first semiconductor layer 101 of a first conductivity type, for example n-conducting, and a second semiconductor layer 102 of a second conductivity type, for example p-conducting.
- the active Zone 103 is arranged between the first and the second semiconductor layer 101, 102.
- an active zone can be arranged between the first and second semiconductor layers.
- the active zone can, for example, have a pn junction, a double heterostructure, a single quantum well structure (SQW) or a multiple quantum well structure (MQW) for generating radiation.
- Quantum well structure has no meaning with regard to the dimensionality of the quantization. It therefore includes, among other things, quantum wells, quantum wires and quantum dots as well as any combination of these layers.
- the pump laser diode 100 For example, to produce the pump laser diode 100, first the first semiconductor layer 101 can be grown over a suitable growth substrate, followed by the active zone 103 and the second semiconductor layer 102.
- the pump laser diode 100 is then applied as a so-called flip chip to the components of the photonic integrated circuit 10, so that the second semiconductor layer 102 faces, for example, a carrier 107 or substrate of the photonic integrated circuit 110, and the first semiconductor layer 101 forms part of a surface of the photonic integrated circuit 110.
- the pump laser diode 100 is designed as an edge-emitting laser according to Fig. 1. However, it can also be designed in any other way, and electromagnetic radiation can also be emitted via a main surface of the pump laser diode.
- a first connection line 111 can be electrically connected to the first semiconductor layer 101.
- a second connection line 112 may be electrically connected to the second semiconductor layer 102.
- the first and second connecting lines 111, 112 are electrically connected, for example, to a driver circuit 113 for operating the pump laser diode 100.
- the first and second semiconductor layers 101, 102 may contain GaN, for example.
- the active zone 103 contains, for example, This is a GaN-containing semiconductor material and is suitable, for example, for emitting electromagnetic radiation with a wavelength of less than 600 or 560 nm.
- the gain medium 105 is suitable for absorbing the pump radiation and emitting laser radiation with a longer wavelength.
- the gain medium 105 can, for example, contain crystalline lithium fluoride.
- the crystalline lithium fluoride-containing gain medium 105 can, for example, be a crystalline medium with a perovskite crystal lattice.
- the gain medium can contain LiLuF4 or LiRhF4.
- the gain medium can be doped with rare earth elements.
- the gain medium can be doped with terbium or praseodymium. When using terbium as a doping material, for example, a wavelength range of the emitted laser radiation 12 from 540 nm to 590 nm can result. When using praseodymium as a doping material, for example, a wavelength range of the emitted laser radiation from 600 nm to 650 nm can result.
- the pump radiation 11 is supplied to a waveguide 117, via which the pump radiation 11 is supplied to the gain medium 105. Furthermore, the laser radiation 12 emitted by the gain medium 105 can be fed to a further waveguide 117.
- a waveguide material may include LiNbO 3 , SiN, A1 2 N 3 or A1 2 O 3 .
- the first and second resonator mirrors 108, 109 can each be wavelength-selective mirrors that are suitable for reflecting electromagnetic radiation in a predetermined wavelength range.
- a reflection-reducing coating 114 can be arranged on an exit side of the waveguide 117.
- the first and/or the second resonator mirror 108, 109 may reflect the incident electromagnetic radiation to a large degree (for example >90%) and may contain non-conductive layers.
- the first and/or second resonator mirror may be formed by a sequence of very thin dielectric layers with each with different refractive indices.
- the layers can alternately have a high refractive index (n>n0) and a low refractive index (n ⁇ n0) and be designed as Bragg mirrors, where nO depends on the materials used, in particular on whether the mirrors contain insulating or semiconductor layers.
- the layer thickness can be ⁇ ,/ 4, where ⁇ , indicates the wavelength of the light to be reflected in the respective medium.
- the layer seen from the incident light can have a greater layer thickness, for example 3X/ 4. Due to the small layer thickness and the difference in the respective refractive indices, appropriately constructed mirrors provide a high reflectivity and at the same time are, for example, non-conductive.
- a Bragg mirror can, for example, have 2 to 50 reflective layers.
- a typical layer thickness of the individual layers can be about 30 to 90 nm, for example about 50 nm.
- the layer stack may further comprise one or two or more layers that are thicker than about 180 nm, for example thicker than 200 nm.
- the ones in Fig. Laser device 10 shown in FIG. 1 represents a photonic integrated circuit in which the individual components are arranged, for example, on a common carrier 107.
- a material of the carrier 107 can be or include silicon.
- the ones in Fig. 1 shown photonic integrated circuit 10 thus represents a compact laser source that is suitable for emitting electromagnetic radiation in a wavelength range that includes, for example, wavelengths longer than the emission wavelength of GaN and wavelengths smaller than the emission wavelength of InGaAlP material systems.
- the photonic integrated circuit 10 can further comprise an optical element 16, for example an active optical element 116, which can be suitable for changing an emission spectrum of the photonic integrated circuit 10.
- the active optical element 116 can be a modulator that actively changes the emission spectrum.
- the optical elements can be mirrors that reflect the light in the gain medium. and improve the optical confinement. According to further embodiments, the mirrors can also be dichroic mirrors that result in a desired emission wavelength.
- Fig. 2A shows a schematic cross-sectional view of a photonic integrated circuit 10 according to further embodiments.
- the ones in Fig. The photonic integrated circuit shown in FIG. 2A includes similar components to those shown in FIG. 1 shown.
- a ring resonator 122 for example a tunable ring resonator 122, is provided.
- the ring resonator 122 is arranged in a light path behind the gain medium 105 .
- the ring resonator is suitable, for example, for filtering the laser radiation 12 emitted by the gain medium 105.
- the ring resonator 122 can be connected to a control device 127, for example via a first connecting element 125 and a second connecting element 126.
- the control device 127 can be set up to adjust one or more wavelengths of the laser beam 12 transmitted by the ring resonator 122. In this way, an emission wavelength of the laser beam 12 can be adjusted by actuating the control device 127. Accordingly, for example, the emission spectrum of the photonic integrated circuit 10 can be tuned.
- the ring resonator 122 can also be set up to stabilize the emission wavelength.
- the ring resonator 122 can be heatable.
- the refractive index of the material of the ring resonator may change, thereby changing a transmission wavelength of the ring resonator 122.
- the second resonator mirror 109 may be arranged on an exit side of the ring resonator 122.
- the second resonator mirror 109 can also be arranged between the gain medium 105 and the ring resonator 122.
- Fig. 2B shows a top view of the photonic integrated circuit shown in Fig. 2A.
- the pump beam 11 emitted by the pump laser diode 100 is fed to the amplifier via a waveguide 117.
- the laser beam 12 emitted by the gain medium 105 is then fed to the ring resonator 122 via the waveguide 117.
- the components of the photonic integrated circuit 10 are arranged over a suitable carrier, for example a silicon substrate 107, and can form a photonic integrated circuit.
- the gain medium 105 can be embedded in a suitable cladding material 118 and thus form a waveguide.
- the cladding material can be arranged on side surfaces of the gain medium parallel to an extension direction of the optical resonator and a light path.
- a refractive index of the cladding material is smaller than the refractive index of the gain medium.
- the cladding material can be made up of the material of the gain medium and be undoped. Accordingly, in the configuration shown in Fig. 3, the gain medium 105 and the cladding material 118 are made up of the same base material or consist of the same base material.
- the gain medium 105 is additionally doped, for example with a rare earth element.
- the gain medium 105 acts as a gain medium and has a higher refractive index than the surrounding cladding material 118. If the gain medium 105 and the cladding material 118 have the same base material, the gain medium can be produced in a simple manner, for example by implantation or diffusion. For example, the gain medium 105 can be structured into a web 115 for mode guidance.
- Fig. 4A shows a top view of a photonic integrated circuit 10 according to further embodiments.
- the gain medium 105 is divided into at least first and second sections 131, 132.
- the first and second sections 131 , 132 are each arranged along a direction that intersects a direction of the pump radiation 11 .
- the sections of the gain medium 105 may be arranged perpendicular to an output direction of the laser beam 12.
- mirrors 129 can be arranged which are suitable for directing the pump radiation 11 onto a first section 131 of the amplification medium.
- mirrors 129 can be arranged to direct the laser radiation emitted from the first section into the second section of the gain medium 105.
- the mirrors 129 can be arranged at an angle of approximately 45° with respect to an extension direction of the sections 131, 132 of the gain medium 105.
- the mirror 129 can be, for example, a metallic mirror, a dielectric mirror or a hybrid mirror.
- a filter coating can be applied over the mirror 129 or the mirror 129 itself can have a wavelength-filtering property so that, for example, only wavelengths to be emitted by the photonic integrated circuit 100 are selectively passed through.
- the emitted laser radiation is thus directed from the first section 131 to the fourth section 134 of the gain medium 105. In this way, it is possible to provide an optical resonator 110 with a sufficient length and reduced space requirement. This allows the photonic integrated circuit 10 to be made more compact.
- sections of the gain medium 105 are not necessarily arranged parallel to one another. Furthermore, an emission direction of the laser radiation 12 can deviate from an emission direction of the pump radiation 11.
- the different sections 131, 132, 133, 134 of the gain medium can be designed such that they each emit slightly different wavelengths. In this way, speckles can be avoided, for example.
- different host crystals or base materials can be used in the different sections 131, 132, 133, 134 of the gain medium. Different dopants can also be used in the different sections.
- By appropriately designing the mirrors used it is possible to amplify a mixture of desired modes. In this way, it is possible to specifically achieve a defined Mixture of modes to amplify and decouple and thus shape the spectrum.
- Fig. 4B shows a schematic cross-sectional view of the photonic integrated circuit 10 shown in Fig. 4A.
- the representation in Fig. 4B is similar to the representation in Fig. 1.
- the waveguides 117 and the sections of the gain medium 105 are embedded in the cladding material 118, as also described with reference to Fig. 3.
- the gain medium 105 and the cladding material 118 can contain the same base material, wherein the gain medium 105 is doped and the cladding material 118 is undoped.
- the photonic integrated circuit 10 shown in Figs. 4A and 4B thus represents a photonic integrated circuit in which the gain medium is integrated in the cladding material 118.
- the cladding material 118 can correspond to one of the host crystals used and can not be doped.
- Fig. 5A shows a cross-sectional view of a photonic integrated circuit 10 according to further embodiments.
- a gain medium 105 of the first section 131 can be different from a gain medium 106 of the second section 132.
- the other elements of the photonic integrated circuit 10 are similar or identical to those shown in Figs. 4A and 4B.
- the first gain medium 105 and the second gain medium 106 may be embedded in a cladding material 118.
- the first gain medium 105 may be doped with different rare earth elements than the second gain medium 106.
- Fig. 5B shows a top view of the photonic integrated circuit 10.
- the first and second sections 131, 132 of the gain medium are formed with a different material. doped with a different dopant than the third and fourth sections 133, 134.
- the jacket material can do the same thing Have base material and be undoped. In this way it is possible, for example, to generate electromagnetic radiation of different wavelengths.
- Fig. 5C shows a cross-sectional view of the first and second sections 131, 132 of the gain medium.
- the first section 131 is formed with the first gain medium 105
- the second section is formed with the second gain medium 106.
- the second gain medium 106 is additionally embedded in the cladding material 118 and forms a ridge 115 for mode guidance.
- the first and second gain media 105, 106 can each contain the same base material, but a different dopant.
- Fig. 6A shows a top view of a photonic integrated circuit 10 according to further embodiments.
- the photonic integrated circuit 10 shown in FIG. 6A has, in addition to the components shown, for example, in FIGS. 4A and 4B, a second optical resonator 121 with a first and a second resonator mirror 108, 109.
- the second optical resonator 121 is designed differently than the first optical resonator 111.
- a length of the second optical resonator 121 may differ from the length of the first optical resonator 111.
- an amplification medium 106 can be arranged within the second optical resonator 121, which is different from the first amplification medium
- the second gain medium may have the same base material as the first gain medium 105.
- the second gain medium 106 may be doped with another dopant.
- the photonic integrated circuit 10 may also have an optical or photonic switch 130.
- the optical or photonic switch 130 can be suitable for selectively supplying pump radiation 11 to the first or the second optical resonator 111, 121. For example, through the second gain medium
- the optical Switch 130 can thus be used to switch an emission wavelength of the photonic integrated circuit 10 between different wavelengths.
- the optical switch 130 may be based on the electro-optical effect.
- the optical switch 130 may be integrated with the waveguide 117 .
- Fig. 6B shows a cross-sectional view of the photonic integrated circuit 10 shown in Fig. 6A.
- the waveguide 117 and the first gain medium 105 are embedded in the cladding material 118.
- the photonic integrated circuit 10 can comprise further optical resonators, each with a different gain medium or length of the resonator. In this way, it is possible to switch the emission wavelength between several values.
- a very compact photonic integrated circuit with a high degree of flexibility in shaping the spectral bandwidth of the emission can be provided.
- Both photonic integrated circuits with a small spectral bandwidth and with a large spectral bandwidth can be created.
- This provides a high level of monolithic integration.
- the photonic integrated circuits described can be used in sensors, for example industrial sensors, medical sensors and others. They can also be used in smart glasses.
- Fig. 7 shows a schematic view of an optoelectronic device 15 according to embodiments.
- the optoelectronic device 15 contains the described photonic integrated circuit.
- the optoelectronic device can be, for example, a sensor or VR/AR ("Virtual Reality/Augmented Reality") data glasses.
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- Electromagnetism (AREA)
- Optics & Photonics (AREA)
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- Condensed Matter Physics & Semiconductors (AREA)
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Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE112023004100.8T DE112023004100A5 (de) | 2022-09-30 | 2023-09-18 | Photonische integrierte schaltung mit verstärkungsmedium und optoelektronische vorrichtung |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022125325.2 | 2022-09-30 | ||
| DE102022125325.2A DE102022125325A1 (de) | 2022-09-30 | 2022-09-30 | Photonische integrierte schaltung mit verstärkungsmedium und optoelektronische vorrichtung |
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| WO2024068344A1 true WO2024068344A1 (de) | 2024-04-04 |
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| PCT/EP2023/075698 Ceased WO2024068344A1 (de) | 2022-09-30 | 2023-09-18 | Photonische integrierte schaltung mit verstärkungsmedium und optoelektronische vorrichtung |
Country Status (2)
| Country | Link |
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| DE (2) | DE102022125325A1 (de) |
| WO (1) | WO2024068344A1 (de) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102022125325A1 (de) | 2022-09-30 | 2024-04-04 | Ams-Osram International Gmbh | Photonische integrierte schaltung mit verstärkungsmedium und optoelektronische vorrichtung |
| DE102024112844A1 (de) * | 2024-05-07 | 2025-11-13 | Ams-Osram International Gmbh | Lidar-vorrichtung und elektronische vorrichtung |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030210725A1 (en) * | 2001-03-14 | 2003-11-13 | Corning Incorporated, A New York Corporation | Planar laser |
| US20110134953A1 (en) * | 2008-08-15 | 2011-06-09 | Koninklijke Philips Electronics N.V. | Waveguide laser |
| DE102022125325A1 (de) | 2022-09-30 | 2024-04-04 | Ams-Osram International Gmbh | Photonische integrierte schaltung mit verstärkungsmedium und optoelektronische vorrichtung |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0644645B2 (ja) * | 1990-03-30 | 1994-06-08 | ホーヤ株式会社 | 光導波路型レーザ媒体及び光導波路型レーザ装置 |
| DE4041130A1 (de) * | 1990-12-21 | 1992-07-02 | Messerschmitt Boelkow Blohm | Festkoerper-lasersystem |
| WO2007006092A1 (en) * | 2005-07-11 | 2007-01-18 | Ellex Medical Pty Ltd | Diode pumped laser |
| JPWO2009050876A1 (ja) * | 2007-10-18 | 2011-02-24 | パナソニック株式会社 | 短波長光源及び光学装置 |
| US10797462B1 (en) * | 2016-06-28 | 2020-10-06 | Acacia Communications, Inc. | ER-doped waveguide integration in silicon photonics |
-
2022
- 2022-09-30 DE DE102022125325.2A patent/DE102022125325A1/de not_active Withdrawn
-
2023
- 2023-09-18 DE DE112023004100.8T patent/DE112023004100A5/de active Pending
- 2023-09-18 WO PCT/EP2023/075698 patent/WO2024068344A1/de not_active Ceased
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030210725A1 (en) * | 2001-03-14 | 2003-11-13 | Corning Incorporated, A New York Corporation | Planar laser |
| US20110134953A1 (en) * | 2008-08-15 | 2011-06-09 | Koninklijke Philips Electronics N.V. | Waveguide laser |
| DE102022125325A1 (de) | 2022-09-30 | 2024-04-04 | Ams-Osram International Gmbh | Photonische integrierte schaltung mit verstärkungsmedium und optoelektronische vorrichtung |
Non-Patent Citations (1)
| Title |
|---|
| YANG LIU ET AL: "A photonic integrated circuit based erbium-doped amplifier", ARXIV.ORG, CORNELL UNIVERSITY LIBRARY, 201 OLIN LIBRARY CORNELL UNIVERSITY ITHACA, NY 14853, 5 April 2022 (2022-04-05), XP091200221 * |
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| DE102022125325A1 (de) | 2024-04-04 |
| DE112023004100A5 (de) | 2025-07-17 |
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