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公开(公告)号：US20190067906A1
公开(公告)日：2019-02-28
申请号：US15688218
申请日：2017-08-28
Applicant: Lumentum Operations LLC
Inventor： Albert YUEN , Ajit Vijay BARVE , Guowei ZHAO , Eric R. HEGBLOM
Abstract: In some implementations, a vertical cavity surface emitting laser (VCSEL) includes a substrate layer and epitaxial layers on the substrate layer. The epitaxial layers may include an active layer, a first mirror, a second mirror, and one or more oxidation layers. The active layer may be between the first mirror and the second mirror, and the one or more oxidation layers may be proximate to the active layer. The one or more oxidation layers may be configured to control beam divergence of a laser beam emitted by the VCSEL based on at least one of: a quantity of the one or more oxidation layers, a shape of the one or more oxidation layers, a thickness of the one or more oxidation layers, or a proximity of the one or more oxidation layers to the active layer.
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公开(公告)号：US20170244219A1
公开(公告)日：2017-08-24
申请号：US15050817
申请日：2016-02-23
Applicant: Lumentum Operations LLC
Inventor： Ajit Vijay BARVE , Albert YUEN
CPC classification number: H01S5/18311 , H01S5/18308 , H01S5/18369 , H01S5/2063 , H01S5/423 , H01S2301/176
Abstract: A surface emitting laser may include an isolation layer including a first center portion and a first plurality of outer portions extending from the first center portion, and a metal layer including a second center portion and a second plurality of outer portions extending from the second center portion. The metal layer may be formed on the isolation layer such that a first outer portion, of the second plurality of outer portions, is formed over one of the first plurality of outer portions. The surface emitting laser may include a passivation layer including a plurality of openings. An opening may be formed over the first outer portion. The surface emitting laser may include a plurality of oxidation trenches. An oxidation trench may be positioned at least partially between the first outer portion and a second outer portion of the second plurality of outer portions.
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公开(公告)号：US20230187905A1
公开(公告)日：2023-06-15
申请号：US18166089
申请日：2023-02-08
Applicant: Lumentum Operations LLC
Inventor： Eric R. HEGBLOM , Albert YUEN
CPC classification number: H01S5/18308 , H01S5/423 , H01S5/18313 , H01S5/18341 , H01S5/0208 , H01S5/18358 , H01S5/18305 , H01S5/4025 , H01S5/04256
Abstract: An emitter may include a substrate, a conductive layer on at least a bottom surface of a trench, and a first metal layer to provide a first electrical contact of the emitter on an epitaxial side of the substrate. The first metal layer may be within the trench such that the first metal layer contacts the conductive layer within the trench. The emitter may further include a second metal layer to provide a second electrical contact of the emitter on the epitaxial side of the substrate, and an isolation implant to block lateral current flow between the first electrical contact and the second electrical contact.
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公开(公告)号：US20230006422A1
公开(公告)日：2023-01-05
申请号：US17929377
申请日：2022-09-02
Applicant: Lumentum Operations LLC
Inventor： Ajit Vijay BARVE , Albert YUEN
Abstract: A surface emitting laser may include an isolation layer including a first center portion and a first plurality of outer portions extending from the first center portion, and a metal layer including a second center portion and a second plurality of outer portions extending from the second center portion. The metal layer may be formed on the isolation layer such that a first outer portion, of the second plurality of outer portions, is formed over one of the first plurality of outer portions. The surface emitting laser may include a passivation layer including a plurality of openings. An opening may be formed over the first outer portion. The surface emitting laser may include a plurality of oxidation trenches. An oxidation trench may be positioned at least partially between the first outer portion and a second outer portion of the second plurality of outer portions.
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公开(公告)号：US20210239750A1
公开(公告)日：2021-08-05
申请号：US16822487
申请日：2020-03-18
Applicant: Lumentum Operations LLC
Inventor： Albert YUEN
IPC: G01R31/26
Abstract: An apparatus may include an upper transparent plate to hold a wafer of bottom-emitting or bottom-detecting optical devices, wherein the upper transparent plate comprises a set of holes in an area of the upper transparent plate for holding the wafer. The apparatus may include a lower transparent plate and a structure supporting the upper transparent plate and the lower transparent plate to form a cavity bounded by the upper transparent plate, the lower transparent plate, and the structure, wherein the structure comprises an opening in fluid communication with the cavity, wherein applying suction through the opening, via the cavity and the set of holes, holds the wafer flat on the upper transparent plate, and wherein an optical path, between a bottom-emitting or bottom-detecting optical device of the bottom-emitting or bottom-detecting optical devices of the wafer and a testing device, passes through the upper transparent plate, the cavity, and the lower transparent plate.
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Patent Agency Ranking
公开(公告)号：US20250079797A1
公开(公告)日：2025-03-06
申请号：US18545939
申请日：2023-12-19
Applicant: Lumentum Operations LLC
Inventor： Albert YUEN , Chien-Yao LU
Abstract: In some implementations, a vertical cavity surface emitting laser (VCSEL) includes a substrate, a first mirror on the substrate, an active region on the first mirror, and a second mirror on the active region. The second mirror may include a plurality of reflector layers. A mesa may be defined in the second mirror. The mesa may taper out from a top surface of the mesa to a periphery of the mesa. A quantity of reflector layers, of the plurality of reflector layers, in sections of the mesa may decrease from a central section of the mesa, underneath the top surface, to the periphery of the mesa.
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公开(公告)号：US20220200232A1
公开(公告)日：2022-06-23
申请号：US17192470
申请日：2021-03-04
Applicant: Lumentum Operations LLC
Inventor： Albert YUEN , Mitchell SRIMONGKOL , Joseph LIN
IPC: H01S5/0234
Abstract: In some implementations, an optical device for mounting in a flip-chip configuration includes a plurality of flip-chip bumps that are arranged in a pattern on the optical device, wherein the pattern is not aligned with a crystal cleavage plane associated with a substrate of the optical device. In some implementations, the optical device further includes a gap that separates a primary region of the optical device and a secondary region of the optical device, wherein at least one portion of a side of the gap is oriented at a non-zero angle to the crystal cleavage plane.
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公开(公告)号：US20190326732A1
公开(公告)日：2019-10-24
申请号：US16456480
申请日：2019-06-28
Applicant: Lumentum Operations LLC
Inventor： Albert YUEN , Ajit Vijay BARVE
Abstract: In some implementations, a VCSEL array may include a plurality of VCSELs that each operates concurrently and emits light at a same wavelength. A first distance between a first pair of adjacent VCSELs, of the plurality of VCSELs, may be different from a second distance between a second pair of adjacent VCSELs of the plurality of VCSELs. The first pair of adjacent VCSELs may be located closer to a center of the VCSEL array than the second pair of adjacent VCSELs. At least one of temperature non-uniformity or optical power non-uniformity among the plurality of VCSELs may be reduced as compared to another VCSEL array, with a same physical footprint as the VCSEL array, comprising uniformly spaced VCSELs.
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公开(公告)号：US20190181609A1
公开(公告)日：2019-06-13
申请号：US16266926
申请日：2019-02-04
Applicant: Lumentum Operations LLC
Inventor： Albert YUEN
Abstract: A vertical cavity surface emitting laser (VCSEL) array may comprise a doped substrate layer. The VCSEL array may comprise a plurality of VCSELs on the doped substrate layer. The VCSEL array may comprise a buffer structure between the doped substrate layer and the plurality of VCSELs. The buffer structure, or a combination of the buffer structure and a layer of the plurality of VCSELs, may provide electrical isolation from the plurality of VCSELs to the doped substrate layer. The VCSEL array may comprise an isolation structure between adjacent VCSELs of the plurality of VCSELs. The isolation structure may provide electrical isolation between a first VCSEL, of the adjacent VCSELs, and a second VCSEL of the adjacent VCSELs. The first VCSEL and the second VCSEL may be different VCSELs.
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公开(公告)号：US20240047947A1
公开(公告)日：2024-02-08
申请号：US18468135
申请日：2023-09-15
Applicant: Lumentum Operations LLC
Inventor： Albert YUEN , Ajit Vijay BARVE
CPC classification number: H01S5/423 , H01S5/0425 , H01S5/028 , H01S5/04254 , H01S5/18311 , H01S5/04256 , H01S5/0282 , H01S2301/176 , H01S5/18305 , H01S5/18377
Abstract: An emitter array may comprise a plurality of emitters that includes two adjacent emitters. The emitter array may comprise a plurality of emitters that includes two adjacent emitters. The ohmic metal layer may include a portion that is shared by, and located between, the two adjacent emitters. The emitter array may comprise a protective layer over the ohmic metal layer. The emitter array may comprise a via through the protective layer to the portion. The via is shared by, and located between, the two adjacent emitters.
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