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公开(公告)号：US20240356306A1
公开(公告)日：2024-10-24
申请号：US18630166
申请日：2024-04-09
IPC分类号： H01S5/34 , H01S5/02216 , H01S5/02253 , H01S5/14
CPC分类号： H01S5/3402 , H01S5/02216 , H01S5/02253 , H01S5/141
摘要： A laser module includes a QCL element, a diffraction grating portion, a first lens member configured to be disposed between the first end face and the diffraction grating portion, and a second lens member configured to be disposed at a position facing a second end face of the QCL element, and a package configured to house the QCL element, the diffraction grating portion, and the first lens member. A distance in an X-axis direction between an incident surface of the first lens member on which the first light is incident and the first end face is shorter than a distance in the X-axis direction between an incident surface of the second lens member on which the third light is incident and the second end face.
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公开(公告)号：US20230095425A1
公开(公告)日：2023-03-30
申请号：US17911206
申请日：2021-03-15
IPC分类号： H01S5/34 , H01S5/02253 , H01S5/02325 , H01S5/024
摘要： A quantum cascade laser device includes a QCL element; a lens; and a lens holder having a small-diameter hole, a large-diameter hole, and a counterbore surface. At least a part of a side surface of the lens is fixed to an inner surface of the large-diameter hole in a state where an edge portion of an incident surface of the lens is in contact with the counterbore surface. A central axis of the small-diameter hole is eccentric from that of the large-diameter hole. The side surface of the lens is positioned with respect to the inner surface of the large-diameter hole along a direction from the central axis of the large-diameter hole toward the central axis of the small-diameter hole. A central axis of the lens is disposed at a position closer to the central axis of the small-diameter hole than to the central axis of the large-diameter hole.
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公开(公告)号：US20180254610A1
公开(公告)日：2018-09-06
申请号：US14923861
申请日：2015-10-27
发明人： Takahide OCHIAI , Tadataka EDAMURA , Naota AKIKUSA
CPC分类号： H01S5/3402 , H01S5/02208 , H01S5/02236 , H01S5/02252 , H01S5/0228 , H01S5/02288 , H01S5/024 , H01S5/02415 , H01S5/12 , H01S5/3419
摘要： A quantum cascade laser device has a light-absorbing cover member located between one emission end face of a quantum cascade laser element and an emission window of a housing. The emission end face and an opposing surface of a submount with respect to the cover member are flush with each other. The cover member has an opening at a position opposing the emission end face. The opening has a tapered first opening part increasing its diameter from the emission end face side to the emission window side and a second opening part formed with a fixed diameter not smaller than the smallest diameter of the first opening part.
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公开(公告)号：US20230142086A1
公开(公告)日：2023-05-11
申请号：US17914828
申请日：2021-03-26
CPC分类号： H01S5/028 , H01S5/3401
摘要： A quantum cascade laser element includes: a semiconductor substrate; a semiconductor laminate formed on the semiconductor substrate to include an active layer having a quantum cascade structure and to have a first end surface and a second end surface facing each other in a light waveguide direction; a first electrode; a second electrode; an insulating film continuously formed from the second end surface to a region on a second end surface side of at least one surface of a surface on an opposite side of the first electrode from the semiconductor laminate and a surface on an opposite side of the second electrode from the semiconductor substrate; and a metal film formed on the insulating film to cover at least the active layer when viewed in the light waveguide direction. An outer edge of the metal film does not reach the one surface when viewed in the light waveguide direction.
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5.发明申请公开(公告)号：US20220271504A1
公开(公告)日：2022-08-25
申请号：US17672758
申请日：2022-02-16
摘要： The laser module includes a QCL element, a MEMS diffraction grating, a first lens holder disposed on a side opposite to a side on which the MEMS diffraction grating is disposed with respect to the QCL element, a second lens holder disposed between the QCL element and the MEMS diffraction grating, a package, an electrode terminal disposed along an inner wall surface of the package, and a wire for electrically connecting the electrode terminal and the QCL element. An end portion of the wire on a side where the QCL element is disposed is disposed at a position between the first lens holder and the second lens holder when viewed from a direction orthogonal to a facing direction in which the first lens holder and the second lens holder face each other.
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公开(公告)号：US20210181518A1
公开(公告)日：2021-06-17
申请号：US17108278
申请日：2020-12-01
摘要： A light source module includes a light source; an optical fiber configured to guide light output from the light source; a pair of holding members configured to hold both ends of a first portion of the optical fiber such that the first portion extends linearly; a first vibrator configured to vibrate the first portion along a first direction intersecting an extending direction of the first portion; and a second vibrator configured to vibrate the first portion along a second direction intersecting the extending direction and differing from the first direction.
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公开(公告)号：US20230163558A1
公开(公告)日：2023-05-25
申请号：US17911189
申请日：2021-03-15
IPC分类号： H01S5/02257 , H01S5/02253 , H01S5/02216 , H01S5/00
CPC分类号： H01S5/02257 , H01S5/0064 , H01S5/02216 , H01S5/02253 , H01S5/3402
摘要： A quantum cascade laser device includes a QCL element and a package. A light-emitting window through which laser light emitted from the QCL element passes is provided on a side wall of the package. The light-emitting window includes a small-diameter hole, a large-diameter hole larger than the small-diameter hole, a counterbore surface having an annular shape that connects the small-diameter hole and the large-diameter hole, and a window member disposed inside the large-diameter hole. An incident surface of a window member includes a first region in which an anti-reflection film is provided, and a second region metallized and formed in an annular shape to be separated from the first region and to surround the first region. The second region is joined to the counterbore surface through a solder member.
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公开(公告)号：US20230087419A1
公开(公告)日：2023-03-23
申请号：US17945252
申请日：2022-09-15
IPC分类号： H01S5/14 , H01S5/34 , H01S5/023 , H01S5/02253 , H01S5/0236
摘要： The laser module includes a QCL element, a diffraction grating unit, a first lens holder, a second lens holder, and a mount member. The first mounting portion has a first top surface on which the first lens holder is mounted via an adhesive layer. The third mounting portion has a third top surface on which the second lens holder is mounted via an adhesive layer. The second mounting portion has a second top surface located higher than the first top surface and the third top surface, a first side surface connecting the second top surface and the first top surface, and a second side surface connecting the second top surface and the third top surface. A notch extending from the second top surface to the first top surface or the third top surface is formed in at least one of the first side surface and the second side surface.
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公开(公告)号：US20220271506A1
公开(公告)日：2022-08-25
申请号：US17672768
申请日：2022-02-16
IPC分类号： H01S5/14 , H01S5/02345 , H01S5/02325
摘要： The laser module includes a QCL element, a MEMS diffraction grating, a lens holder holding a lens disposed between the QCL element and the MEMS diffraction grating, a package, an electrode terminal disposed along an inner wall surface of the package, and a wire for electrically connecting the electrode terminal and a coil. The top wall of the package faces the bottom wall of the package in a direction orthogonal to the optical axis direction of the lens. The MEMS diffraction grating includes an electrode pad electrically connected to the coil. The electrode pad is connected to the electrode terminal via the wire. A height position of the electrode pad with respect to the bottom wall is equal to or higher than a height position of the electrode terminal with respect to the bottom wall.
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公开(公告)号：US20220271505A1
公开(公告)日：2022-08-25
申请号：US17672772
申请日：2022-02-16
IPC分类号： H01S5/14 , H01S5/02253
摘要： The laser module includes a QCL element, a MEMS diffraction grating, a lens holder for holding a lens disposed between the QCL element and the MEMS diffraction grating, and a package. The package includes a bottom wall, a side wall erected on the bottom wall and formed in an annular shape so as to surround a region in which the QCL element is accommodated, and a top wall closing an opening of the side wall on a side opposite to a side where the bottom wall is disposed. The top wall faces the bottom wall in a direction orthogonal to the optical axis direction of the lens, and the distance between the top wall and a surface of the lens holder on a side where the top wall is disposed is smaller than a thickness of the lens holder along the optical axis direction of the lens.
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