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公开(公告)号：US20210175683A1
公开(公告)日：2021-06-10
申请号：US17147691
申请日：2021-01-13
Applicant: EXCELITAS TECHNOLOGIES CORP.
Inventor： Bartley C. Johnson , Walid A. Atia , Peter S. Whitney , Mark E. Kuznetsov , Edward J. Mallon
Abstract: An optically pumped tunable VCSEL swept source module has a VCSEL and a pump, which produces light to pump the VSCEL, wherein the pump is geometrically isolated from the VCSEL. In different embodiments, the pump is geometrically isolated by defocusing light from the pump in front of the VCSEL, behind the VCSEL, and/or by coupling the light from the pump at an angle with respect to the VCSEL. In the last case, angle is usually less than 88 degrees. There are further strategies for attacking pump noise problems. Pump feedback can be reduced through (1) Faraday isolation and (2) geometric isolation. Single frequency pump lasers (Distributed feedback lasers (DFB), distributed Bragg reflector lasers (DBR), Fabry-Perot (FP) lasers, discrete mode lasers, volume Bragg grating (VBG) stabilized lasers can eliminate wavelength jitter and amplitude noise that accompanies mode hopping.
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公开(公告)号：US12040594B2
公开(公告)日：2024-07-16
申请号：US18085005
申请日：2022-12-20
Applicant: Excelitas Technologies Corp.
Inventor： Bartley C. Johnson , Mark E. Kuznetsov , Peter S. Whitney
CPC classification number: H01S5/18366 , H01S5/041 , H01S5/18369 , H01S5/34306
Abstract: A vertical cavity surface emitting laser (VCSEL) has a shortened overall laser cavity by combining the gain section with a distributed Bragg reflector (DBR). The overall cavity length can be contracted by placing gain structures inside the DBR. This generally applies to a number of semiconductor material systems and wavelength bands, but this scheme is very well suited to the AlGaAs/GaAs material system with strained InGaAs quantum wells as a gain medium, for example.
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公开(公告)号：US11431151B2
公开(公告)日：2022-08-30
申请号：US16674991
申请日：2019-11-05
Applicant: Excelitas Technologies Corp.
Inventor： James W. Getz , Peter S. Whitney
Abstract: A MEMS tunable VCSEL includes a membrane device having a mirror and a distal-side electrostatic cavity for displacing the mirror to increase a size of an optical cavity. A VCSEL device includes an active region for amplifying light. Then, a proximal-side electrostatic cavity is defined between the VCSEL device and the membrane device is used to displace the mirror to decrease a size of an optical cavity.
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公开(公告)号：US12027821B2
公开(公告)日：2024-07-02
申请号：US17852268
申请日：2022-06-28
Applicant: Excelitas Technologies Corp.
Inventor： James W Getz , Peter S. Whitney
CPC classification number: H01S5/18366 , B81B7/02 , H01S5/0215 , H01S5/02345 , H01S5/0261 , H01S5/041 , H01S5/18355 , H01S5/18369
Abstract: A MEMS tunable VCSEL includes a membrane device having a mirror and a distal-side electrostatic cavity for displacing the mirror to increase a size of an optical cavity. A VCSEL device includes an active region for amplifying light. Then, a proximal-side electrostatic cavity is defined between the VCSEL device and the membrane device is used to displace the mirror to decrease a size of an optical cavity.
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公开(公告)号：US11749962B2
公开(公告)日：2023-09-05
申请号：US17147691
申请日：2021-01-13
Applicant: EXCELITAS TECHNOLOGIES CORP.
Inventor： Bartley C. Johnson , Walid A. Atia , Peter S. Whitney , Mark E. Kuznetsov , Edward J. Mallon
IPC: H01S5/04 , H01S5/183 , H01S5/50 , H01S5/22 , H01S5/30 , H01S5/343 , H01S5/02251 , H01S5/02345
CPC classification number: H01S5/041 , H01S5/18361 , H01S5/18366 , H01S5/5045 , H01S5/02251 , H01S5/02345 , H01S5/22 , H01S5/3013 , H01S5/343
Abstract: An optically pumped tunable VCSEL swept source module has a VCSEL and a pump, which produces light to pump the VSCEL, wherein the pump is geometrically isolated from the VCSEL. In different embodiments, the pump is geometrically isolated by defocusing light from the pump in front of the VCSEL, behind the VCSEL, and/or by coupling the light from the pump at an angle with respect to the VCSEL. In the last case, angle is usually less than 88 degrees. There are further strategies for attacking pump noise problems. Pump feedback can be reduced through (1) Faraday isolation and (2) geometric isolation. Single frequency pump lasers (Distributed feedback lasers (DFB), distributed Bragg reflector lasers (DBR), Fabry-Perot (FP) lasers, discrete mode lasers, volume Bragg grating (VBG) stabilized lasers can eliminate wavelength jitter and amplitude noise that accompanies mode hopping.
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Patent Agency Ranking
公开(公告)号：US20230208107A1
公开(公告)日：2023-06-29
申请号：US18085005
申请日：2022-12-20
Applicant: Excelitas Technologies Corp.
Inventor： Bartley C. Johnson , Mark E. Kuznetsov , Peter S. Whitney
CPC classification number: H01S5/18366 , H01S5/041 , H01S5/34306 , H01S5/18369
Abstract: A vertical cavity surface emitting laser (VCSEL) has a shortened overall laser cavity by combining the gain section with a distributed Bragg reflector (DBR). The overall cavity length can be contracted by placing gain structures inside the DBR. This generally applies to a number of semiconductor material systems and wavelength bands, but this scheme is very well suited to the AlGaAs/GaAs material system with strained InGaAs quantum wells as a gain medium, for example.
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公开(公告)号：US11699894B2
公开(公告)日：2023-07-11
申请号：US17402837
申请日：2021-08-16
Applicant: Excelitas Technologies Corp.
Inventor： James W. Getz , Peter S. Whitney
CPC classification number: H01S5/18366 , H01S5/06821 , H01S5/1838 , H01S5/18361 , H01S5/18363 , H01S5/18369 , H01S5/068 , H01S5/0614 , H01S5/183 , H01S5/18375
Abstract: A MEMS tunable VCSEL includes a membrane device having a mirror and a distal-side electrostatic cavity for displacing the mirror to increase a size of an optical cavity. A VCSEL device includes an active region for amplifying light. Then, one or more proximal-side electrostatic cavities are defined between the VCSEL device and the membrane device and used to displace the mirror to decrease a size of an optical cavity.
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公开(公告)号：US20230051091A1
公开(公告)日：2023-02-16
申请号：US17402837
申请日：2021-08-16
Applicant: Excelitas Technologies Corp.
Inventor： James W. Getz , Peter S. Whitney
Abstract: A MEMS tunable VCSEL includes a membrane device having a mirror and a distal-side electrostatic cavity for displacing the mirror to increase a size of an optical cavity. A VCSEL device includes an active region for amplifying light. Then, one or more proximal-side electrostatic cavities are defined between the VCSEL device and the membrane device and used to displace the mirror to decrease a size of an optical cavity.
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公开(公告)号：US20230046578A1
公开(公告)日：2023-02-16
申请号：US17852268
申请日：2022-06-28
Applicant: Excelitas Technologies Corp.
Inventor： James W. Getz , Peter S. Whitney
Abstract: A MEMS tunable VCSEL includes a membrane device having a mirror and a distal-side electrostatic cavity for displacing the mirror to increase a size of an optical cavity. A VCSEL device includes an active region for amplifying light. Then, a proximal-side electrostatic cavity is defined between the VCSEL device and the membrane device is used to displace the mirror to decrease a size of an optical cavity.
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公开(公告)号：US11139635B2
公开(公告)日：2021-10-05
申请号：US16446303
申请日：2019-06-19
Applicant: Excelitas Technologies Corp.
Inventor： Bartley C. Johnson , Mark E. Kuznetsov , Walid A. Atia , Peter S. Whitney
Abstract: Quantum well designs for tunable VCSELs are disclosed that are tolerant of the wavelength shift. Specifically, the active region has even number of substantially uniformly spaced (¼ of the center wavelength in the semiconducting material) quantum wells.
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