公开(公告)号：US12046872B2

公开(公告)日：2024-07-23

申请号：US17100951

申请日：2020-11-23

申请人： Kazuma Izumiya ,  Naoto Jikutani ,  Kazuhiro Harasaka ,  Ryoichiro Suzuki

发明人： Kazuma Izumiya ,  Naoto Jikutani ,  Kazuhiro Harasaka ,  Ryoichiro Suzuki

IPC分类号： H01S5/183 ,  G01S7/481 ,  H01S5/0234 ,  H01S5/042

CPC分类号： H01S5/18361 ,  H01S5/0234 ,  H01S5/18305 ,  H01S5/18311 ,  H01S5/18327 ,  G01S7/4814 ,  H01S5/04252 ,  H01S2304/04

摘要： A surface emitting laser includes a first reflecting mirror; a second reflecting mirror; an active region between the first reflecting mirror and the second reflecting mirror. The first reflecting mirror and the second reflecting mirror each include a plurality of low refractive-index layers having a first refractive index; and a plurality of high refractive-index layers having a second refractive index higher than the first refractive index. The plurality of low refractive-index layers and the plurality of high refractive-index layers are alternated one after another. The plurality of high refractive-index layers of the first reflecting mirror includes a first layer; and a second layer having a higher thermal diffusion property in an in-plane direction than the first layer.

公开(公告)号：US20240136793A1

公开(公告)日：2024-04-25

申请号：US18483859

申请日：2023-10-10

申请人： Naoto Jikutani ,  Kazuhiro Harasaka ,  Ryoichiro Suzuki ,  Yutaka Maita ,  Naofumi Ueno

发明人： Naoto Jikutani ,  Kazuhiro Harasaka ,  Ryoichiro Suzuki ,  Yutaka Maita ,  Naofumi Ueno

IPC分类号： H01S5/183 ,  H01S5/00 ,  H01S5/042 ,  H01S5/0625 ,  H01S5/42

CPC分类号： H01S5/18311 ,  H01S5/0035 ,  H01S5/04256 ,  H01S5/06253 ,  H01S5/423

摘要： A surface-emitting laser includes an active layer; multiple reflectors sandwiching the active layer; and an electrode pair connected to a power supply, through which a current is injected into the active layer. The surface-emitting laser emits at least one laser beam during a current injection period when the current injected into the active layer through the electrode pair during the current injection period is a first current and emits at least one laser beam during a current decrease period when the current injected into the active layer through the electrode pair during the current injection period is a second current exceeding the first current. The current decrease period is after the current injection period. The current injected into the active layer during the current decrease period is lower than the current injected into the active layer during the current injection period.

公开(公告)号：US09935420B2

公开(公告)日：2018-04-03

申请号：US14869336

申请日：2015-09-29

申请人： Kazuma Izumiya ,  Tsuyoshi Suzudo ,  Naoto Jikutani ,  Yasuhiro Higashi ,  Kentaroh Hagita ,  Masayuki Numata ,  Nobuyuki Arai

发明人： Kazuma Izumiya ,  Tsuyoshi Suzudo ,  Naoto Jikutani ,  Yasuhiro Higashi ,  Kentaroh Hagita ,  Masayuki Numata ,  Nobuyuki Arai

IPC分类号： H01S3/113 ,  H01S3/16 ,  H01S3/067 ,  H01S5/183 ,  H01S5/00 ,  G02B27/09 ,  F02P23/04 ,  H01S3/094 ,  H01S5/022 ,  H01S5/42 ,  H01S3/06 ,  H01S3/0941

CPC分类号： H01S3/113 ,  F02P23/04 ,  G02B27/0955 ,  H01S3/0612 ,  H01S3/0627 ,  H01S3/06708 ,  H01S3/094049 ,  H01S3/094053 ,  H01S3/09415 ,  H01S3/1611 ,  H01S3/1643 ,  H01S5/005 ,  H01S5/02284 ,  H01S5/183 ,  H01S5/423

摘要： A laser device is provided including a surface emitting laser array configured to emit light, an optical system disposed in an optical path of light that is emitted from the surface emitting laser, a laser resonator which the light passed through the optical system enters, where the optical system includes a first optical element configured to collimate the light emitted from the surface emitting laser, and a second optical element configured to collect and condense the light collimated by the first optical element.

公开(公告)号：US20190250270A1

公开(公告)日：2019-08-15

申请号：US16270639

申请日：2019-02-08

申请人： Shuichi SUZUKI ,  Nobunari Tsukamoto ,  Tsuyoshi Ueno ,  Tadashi Nakamura ,  Naoto Jikutani ,  Kazuma Izumiya ,  Atsushi Sakai ,  Masayuki Yanagihashi ,  Yasufumi Yamada

发明人： Shuichi SUZUKI ,  Nobunari Tsukamoto ,  Tsuyoshi Ueno ,  Tadashi Nakamura ,  Naoto Jikutani ,  Kazuma Izumiya ,  Atsushi Sakai ,  Masayuki Yanagihashi ,  Yasufumi Yamada

IPC分类号： G01S17/10 ,  G01S7/481 ,  G01S7/484

CPC分类号： G01S17/10 ,  G01S7/4817 ,  G01S7/484 ,  G02B5/30 ,  G02B26/0858 ,  G02B26/105 ,  G02B26/12

摘要： A distance measuring apparatus includes a light source to emit light beams, an optical scanner to scan the light beams output from the light source over a predetermined range, a light receiver to receive reflected light obtained as a result of the light beams being reflected by a target object, and to output detection signals, and a control circuit to measure a distance to the target object based on the detection signals. The light source including a plurality of light-emitting device groups that are arranged in a scan direction of a scan performed by the optical scanner, and the control circuit being to make the plurality of light-emitting device groups emit light at respective different timings in a single scan, and to measure the distance to the target object based on a sum of the detection signals.

公开(公告)号：US10054870B2

公开(公告)日：2018-08-21

申请号：US15364445

申请日：2016-11-30

申请人： Shinichi Harada ,  Naoto Jikutani ,  Kazuma Izumiya ,  Yusuke Okura

发明人： Shinichi Harada ,  Naoto Jikutani ,  Kazuma Izumiya ,  Yusuke Okura

IPC分类号： H01S5/183 ,  G03G15/04 ,  H01S5/343 ,  H01S5/42 ,  G02B19/00 ,  H04N1/028 ,  H04N1/06 ,  F02P23/04

CPC分类号： G03G15/04 ,  F02P23/04 ,  G02B19/0057 ,  H01S3/0627 ,  H01S3/094053 ,  H01S3/09415 ,  H01S3/113 ,  H01S5/02272 ,  H01S5/02276 ,  H01S5/18311 ,  H01S5/18313 ,  H01S5/18322 ,  H01S5/18358 ,  H01S5/18377 ,  H01S5/3202 ,  H01S5/34313 ,  H01S5/423 ,  H04N1/0283 ,  H04N1/0284 ,  H04N1/06

摘要： A surface-emitting laser includes an active layer on which a spacer layer is disposed, and a reflection mirror disposed on the spacer layer, including a current constriction layer that is a selectively-oxidized layer having been selectively oxidized. The current constriction layer is disposed at a position of a node of a standing-wave of an electric field of light oscillated at the active layer and is disposed away from an interface between the spacer layer and the reflection mirror by an optical distance of one-fourth of an oscillation wavelength at the active layer. The selectively-oxidized layer is made of AlGaAs. The reflection mirror includes at least one AlGaInP layer contacting the selectively-oxidized layer.

公开(公告)号：US08958449B2

公开(公告)日：2015-02-17

申请号：US14134718

申请日：2013-12-19

申请人： Kazuhiro Harasaka ,  Shunichi Sato ,  Naoto Jikutani

发明人： Kazuhiro Harasaka ,  Shunichi Sato ,  Naoto Jikutani

IPC分类号： H01S5/00 ,  G03G15/04 ,  B82Y20/00 ,  H01S5/183 ,  G02B26/10 ,  H01S5/18 ,  H01S5/32 ,  H01S5/34 ,  H01S5/42

CPC分类号： G03G15/04 ,  B82Y20/00 ,  G02B26/10 ,  H01S5/18 ,  H01S5/18311 ,  H01S5/18347 ,  H01S5/1835 ,  H01S5/18355 ,  H01S5/18358 ,  H01S5/18391 ,  H01S5/3202 ,  H01S5/3403 ,  H01S5/3436 ,  H01S5/423

摘要： A surface-emitting laser device configured to emit laser light in a direction perpendicular to a substrate includes a p-side electrode surrounding an emitting area on an emitting surface to emit the laser light; and a transparent dielectric film formed on an outside area outside a center part of the emitting area and within the emitting area to lower a reflectance to be less than that of the center part. The outside area within the emitting area has shape anisotropy in two mutually perpendicular directions.

摘要翻译： 构造成在垂直于衬底的方向发射激光的表面发射激光器件包括围绕发射表面上的发射区域的p侧电极以发射激光; 以及透明电介质膜，形成在发光区域的中心部分的外侧的外侧区域内，并且在发光区域内，将反射率降低到小于中心部分的反射率。 发射区域内的外部区域在两个相互垂直的方向上具有形状各向异性。

公开(公告)号：US08675271B2

公开(公告)日：2014-03-18

申请号：US12983586

申请日：2011-01-03

申请人： Naoto Jikutani ,  Kazuhiro Harasaka ,  Satoru Sugawara ,  Shunichi Sato

发明人： Naoto Jikutani ,  Kazuhiro Harasaka ,  Satoru Sugawara ,  Shunichi Sato

IPC分类号： G02B26/08 ,  H01S5/00

CPC分类号： H01S5/18394 ,  B41J2/471 ,  B82Y20/00 ,  H01S5/0425 ,  H01S5/0655 ,  H01S5/18311 ,  H01S5/18355 ,  H01S5/18358 ,  H01S5/3432 ,  H01S2301/14 ,  H01S2301/18

摘要： A disclosed surface-emitting laser element includes an emission region configured to emit a laser beam and a high reflectance region including a first dielectric film having a first refractive index and a second dielectric film having a second refractive index differing from the first refractive index where the first dielectric film and the second dielectric film are stacked within the emission region to provide high reflectance. In the surface-emitting laser element, the high reflectance region is formed in a region including a central portion of the emission region and is configured to include shape anisotropy in two orthogonal directions in a plane in parallel with the emission region.

摘要翻译： 所公开的表面发射激光元件包括配置为发射激光束的发射区域和包括具有第一折射率的第一电介质膜和具有与第一折射率不同的第二折射率的第二电介质膜的高反射率区域， 第一电介质膜和第二电介质膜堆叠在发射区域内以提供高反射率。 在表面发射激光器元件中，高反射率区域形成在包括发射区域的中心部分的区域中，并且被构造成在与发射区域平行的平面中的两个正交方向上包括形状各向异性。

公开(公告)号：US08035676B2

公开(公告)日：2011-10-11

申请号：US12432872

申请日：2009-04-30

申请人： Kazuhiro Harasaka ,  Shunichi Sato ,  Naoto Jikutani ,  Toshihiro Ishii

发明人： Kazuhiro Harasaka ,  Shunichi Sato ,  Naoto Jikutani ,  Toshihiro Ishii

IPC分类号： B41J2/45 ,  H01S5/00

CPC分类号： H01S5/1835 ,  B41J2/471 ,  B82Y20/00 ,  G02B26/12 ,  H01S5/18313 ,  H01S5/18355 ,  H01S5/18358 ,  H01S5/18394 ,  H01S5/3202 ,  H01S5/3406 ,  H01S5/423 ,  H01S2301/176 ,  H01S2301/185 ,  H01S2304/02 ,  H01S2304/04

摘要： In a surface emitting laser element, on a substrate whose normal direction of a principal surface is inclined, a resonator structural body including an active layer, and a lower semiconductor DBR and an upper semiconductor DBR sandwiching the resonator structural body are stacked. A shape of a current passing through region in an oxide confinement structure of the upper semiconductor DBR is symmetrical to an axis passing through a center of the current passing through region parallel to an X axis and symmetrical to an axis passing through the center of the current passing through region parallel to a Y axis, and a length of the current passing through region is greater in the Y axis direction than in the X axis direction. A thickness of an oxidized layer surrounding the current passing through region is greater in the −Y direction than in the +X and −X directions.

摘要翻译： 在表面发射激光元件中，在主表面的法线方向倾斜的基板上堆叠包括有源层的谐振器结构体和夹持谐振器结构体的下半导体DBR和上半导体DBR。 上半导体DBR的氧化物限制结构中的电流通过区域的形状与通过平行于X轴的电流通过区域的中心的轴对称，并且与通过电流的中心的轴对称 通过区域与Y轴平行，并且电流通过区域的长度在Y轴方向上比在X轴方向上大。 围绕电流通过区域的氧化层的厚度在-Y方向上大于在+ X和-X方向上的厚度。

公开(公告)号：US08855159B2

公开(公告)日：2014-10-07

申请号：US12950365

申请日：2010-11-19

申请人： Shunichi Sato ,  Kazuhiro Harasaka ,  Naoto Jikutani

发明人： Shunichi Sato ,  Kazuhiro Harasaka ,  Naoto Jikutani

IPC分类号： H01S5/00

CPC分类号： H01S5/18394 ,  B82Y20/00 ,  H01S5/0425 ,  H01S5/0655 ,  H01S5/18311 ,  H01S5/18327 ,  H01S5/1835 ,  H01S5/18358 ,  H01S5/18369 ,  H01S5/18391 ,  H01S5/3202 ,  H01S5/3434 ,  H01S5/423 ,  H01S2301/18

摘要： A disclosed surface-emitting laser element includes a resonator structure having an active layer, a first semiconductor multilayer mirror and a second semiconductor multilayer mirror configured to sandwich the resonator structure having the active layer, an electrode provided around an emission region of a light-emitting surface, and a dielectric film provided in a peripheral portion within the emission region and outside a central portion of the emission region to make a reflectance of the peripheral portion lower than a reflectance of the central portion. In the surface-emitting laser element, an outer shape of a portion where the electrode provided around the emission region of the light-emitting surface is in contact with a contact layer includes corners.

摘要翻译： 所公开的表面发射激光元件包括具有有源层的谐振器结构，第一半导体多层反射镜和第二半导体多层反射镜，其被配置为夹着具有有源层的谐振器结构，设置在发光区域的发射区域周围的电极 表面，以及设置在发光区域的周边部分和发光区域的中心部分外的电介质膜，以使周边部分的反射率低于中心部分的反射率。 在表面发射激光元件中，设置在发光面的发光区域周围的电极与接触层接触的部分的外形包括角部。

公开(公告)号：US20120121297A1

公开(公告)日：2012-05-17

申请号：US13386725

申请日：2010-09-14

申请人： Naoto Jikutani ,  Kazuhiro Harasaka ,  Satoru Sugawara ,  Shunichi Sato

发明人： Naoto Jikutani ,  Kazuhiro Harasaka ,  Satoru Sugawara ,  Shunichi Sato

IPC分类号： G03G15/04 ,  H01S5/42

CPC分类号： H01S5/18313 ,  B82Y20/00 ,  H01S5/0014 ,  H01S5/18327 ,  H01S5/1835 ,  H01S5/18355 ,  H01S5/18369 ,  H01S5/18394 ,  H01S5/2009 ,  H01S5/3054 ,  H01S5/3202 ,  H01S5/3406 ,  H01S5/423 ,  H01S2301/166

摘要： A surface-emitting laser includes a substrate; a lower semiconductor multilayer film reflector disposed on the substrate; a resonator structure including an active layer and disposed on the lower semiconductor multilayer film reflector; and an upper semiconductor multilayer film reflector disposed on the resonator structure. The second semiconductor multilayer film reflector includes a confinement structure in which a current passage region is surrounded by an oxidized portion of a selectively oxidized layer containing aluminum. An emission region includes a central portion and a peripheral portion, the peripheral portion being covered with a transparent dielectric film whose reflectivity is lower than a reflectivity of the central portion. The selectively oxidized layer has a thickness in a range from 30 nm to 40 nm. The temperature at which an oscillation threshold current is minimized is 60° C. or lower.

摘要翻译： 表面发射激光器包括基板; 设置在所述基板上的下半导体多层膜反射器; 包括有源层并设置在下半导体多层膜反射器上的谐振器结构; 以及设置在谐振器结构上的上半导体多层膜反射器。 第二半导体多层膜反射器包括限制结构，其中电流通道区域被包含铝的选择性氧化层的氧化部分包围。 发射区域包括中心部分和周边部分，周边部分被反射率低于中心部分的反射率的透明电介质膜覆盖。 选择性氧化层的厚度为30nm〜40nm。 振荡阈值电流最小化的温度为60℃以下。