公开(公告)号：US20210167579A1

公开(公告)日：2021-06-03

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 ,  H01S5/022

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：US20210165101A1

公开(公告)日：2021-06-03

申请号：US16772897

申请日：2019-02-01

申请人： Toshiyuki IKEOH ,  Yasufumi YAMADA ,  Atsushi SAKAI ,  Naoto JIKUTANI ,  Tsuyoshi UENO ,  Nobunari TSUKAMOTO ,  Tadashi NAKAMURA ,  Kazuma IZUMIYA ,  Shuichi SUZUKI

发明人： Toshiyuki IKEOH ,  Yasufumi YAMADA ,  Atsushi SAKAI ,  Naoto JIKUTANI ,  Tsuyoshi UENO ,  Nobunari TSUKAMOTO ,  Tadashi NAKAMURA ,  Kazuma IZUMIYA ,  Shuichi SUZUKI

IPC分类号： G01S17/894 ,  G02B26/10 ,  G01S17/42 ,  G01S7/481

摘要： An optical device includes a light source provided with a plurality of surface-emitting laser elements to emit a laser beam, a scanner to scan the laser beam emitted from the light source, and an optical system disposed in an optical path between the light source and the scanner and to guide the laser beam to the scanner. The optical system includes a first optical element to control a divergence angle of the laser beam emitted from the light source and a second optical element to concentrate the laser beam that has passed through the first optical element onto a to-be-scanned surface of the scanner.

公开(公告)号：US20190226387A1

公开(公告)日：2019-07-25

申请号：US16253694

申请日：2019-01-22

申请人： Kenichi HAYAKAWA ,  Kentaroh HAGITA ,  Naoto JIKUTANI ,  Toshiyuki IKEOH

发明人： Kenichi HAYAKAWA ,  Kentaroh HAGITA ,  Naoto JIKUTANI ,  Toshiyuki IKEOH

IPC分类号： F02B19/12 ,  F02P23/04

摘要： An ignition device configured to ignite a fuel included in an air-fuel mixture supplied to a main combustion chamber of an internal combustion engine. The ignition device includes a partition member that forms a precombustion chamber that encloses an ignition point of a fuel. The partition member has a plurality of communicating holes communicating between the main combustion chamber and the precombustion chamber. The ignition device further includes a first interference member that protrudes inward from an inner surface of the partition member.

公开(公告)号：US20180226764A1

公开(公告)日：2018-08-09

申请号：US15889434

申请日：2018-02-06

申请人： Kentaroh HAGITA ,  Yoichi Ishikawa ,  Naoto Jikutani ,  Toshiyuki Ikeoh ,  Yuzuru Sasaki ,  Yusuke Okura

发明人： Kentaroh HAGITA ,  Yoichi Ishikawa ,  Naoto Jikutani ,  Toshiyuki Ikeoh ,  Yuzuru Sasaki ,  Yusuke Okura

IPC分类号： H01S3/034 ,  H01S3/02 ,  H01S3/094 ,  F02P23/04

CPC分类号： H01S3/034 ,  F02P13/00 ,  F02P23/04 ,  G02B1/118 ,  H01S3/005 ,  H01S3/025 ,  H01S3/0606 ,  H01S3/0627 ,  H01S3/094053 ,  H01S3/094057 ,  H01S3/09415 ,  H01S3/113 ,  H01S3/1643 ,  H01S3/1685 ,  H01S5/423 ,  H01T13/06

摘要： Laser devices include a light source that emits a laser beam, an optical system that concentrates the laser beam emitted from the light source, an optical window through which the laser beam exited from the optical system passes, a housing that accommodates the optical system, and an optical window holding member fixed to the housing. The optical window holding member holds the optical window. In the first laser device, the optical window has a face or a protruding face through which the laser beam passes. When the optical window has the face, the face is flush with an edge of the optical window holding member and a film is formed on the face. When the optical window has the protruding face, the protruding face protrudes with reference to the edge of the optical window holding member and a film is formed on the protruding face.

公开(公告)号：US20170179667A1

公开(公告)日：2017-06-22

申请号：US15369999

申请日：2016-12-06

申请人： Yusuke OKURA ,  Kentaroh HAGITA ,  Tsuyoshi SUZUDO ,  Naoto JIKUTANI

发明人： Yusuke OKURA ,  Kentaroh HAGITA ,  Tsuyoshi SUZUDO ,  Naoto JIKUTANI

IPC分类号： H01S3/02 ,  H01S3/00 ,  F02P23/04 ,  H01S3/16 ,  H01S3/0941 ,  H01S3/094 ,  H01S5/18 ,  H01S3/11

CPC分类号： H01S3/025 ,  F02P23/04 ,  G02B1/118 ,  H01S3/0071 ,  H01S3/094038 ,  H01S3/09415 ,  H01S3/1115 ,  H01S3/1611 ,  H01S3/1643 ,  H01S5/18

摘要： An optical window member includes an incident surface onto which a laser light is directed and an exit surface from which the laser light exits. At least one of the incident surface and the exit surface has a plurality of protrusions or recesses formed therein. An interval between centers of adjacent protrusions or adjacent recesses is shorter than or equal to a wavelength of the laser light.

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：US08824517B2

公开(公告)日：2014-09-02

申请号：US13682014

申请日：2012-11-20

申请人： Naoto Jikutani ,  Shunichi Sato

发明人： Naoto Jikutani ,  Shunichi Sato

IPC分类号： H01S5/183 ,  H01S5/18 ,  B82Y20/00 ,  H01S5/42 ,  H01S5/00 ,  H01S5/343 ,  H01S5/065 ,  B41J2/45

CPC分类号： H01S5/18 ,  B41J2/45 ,  B82Y20/00 ,  H01S5/0014 ,  H01S5/0655 ,  H01S5/18308 ,  H01S5/18313 ,  H01S5/1833 ,  H01S5/18333 ,  H01S5/18358 ,  H01S5/18369 ,  H01S5/18391 ,  H01S5/3432 ,  H01S5/423 ,  H01S2301/166

摘要： A surface-emission laser device comprises an active layer, cavity spacer layers provided at both sides of the active layer, reflection layers provided at respective sides of the cavity spacer layers, the reflection layers reflecting an oscillation light oscillated in the active layer and a selective oxidation layer. The selective oxidation layer is provided between a location in the reflection layer corresponding to a fourth period node of the standing wave distribution of the electric field of the oscillating light and a location in the reflection layer adjacent to the foregoing fourth period node in the direction away from the active layer and corresponding to an anti-node of the standing wave distribution of the electric field of the oscillation light.

摘要翻译： 表面发射激光器件包括有源层，设置在有源层的两侧的空腔间隔层，设置在空腔间隔层的各侧的反射层，反射在有源层中振荡的振荡光的反射层和选择性 氧化层。 选择氧化层设置在反射层中的与振荡光的电场的驻波分布的第四周期节点相对应的位置和与前述第四周期节点相邻的反射层中的位置在远离的方向 来自有源层，对应于振荡光的电场的驻波分布的反节点。

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：US07968362B2

公开(公告)日：2011-06-28

申请号：US12408362

申请日：2009-03-20

申请人： Takashi Takahashi ,  Morimasa Kaminishi ,  Shunichi Sato ,  Akihiro Itoh ,  Naoto Jikutani

发明人： Takashi Takahashi ,  Morimasa Kaminishi ,  Shunichi Sato ,  Akihiro Itoh ,  Naoto Jikutani

IPC分类号： H01L21/00

CPC分类号： H01L33/007 ,  B82Y20/00 ,  C23C16/301 ,  C23C16/54 ,  C30B25/02 ,  C30B29/40 ,  H01L21/02395 ,  H01L21/02458 ,  H01L21/02461 ,  H01L21/02463 ,  H01L21/02466 ,  H01L21/02507 ,  H01L21/0254 ,  H01L21/02543 ,  H01L21/02546 ,  H01L21/02549 ,  H01L21/02576 ,  H01L21/02579 ,  H01L21/02581 ,  H01L21/0262 ,  H01L33/025 ,  H01L33/10 ,  H01L33/32 ,  H01S5/0014 ,  H01S5/02284 ,  H01S5/18305 ,  H01S5/18308 ,  H01S5/18311 ,  H01S5/18341 ,  H01S5/18394 ,  H01S5/3211 ,  H01S5/32366 ,  H01S5/343 ,  H01S5/34306 ,  H01S5/34333 ,  H01S2304/04

摘要： A semiconductor light-emitting device has a semiconductor layer containing Al between a substrate and an active layer containing nitrogen, wherein Al and oxygen are removed from a growth chamber before growing said active layer and a concentration of oxygen incorporated into said active layer together with Al is set to a level such that said semiconductor light-emitting device can perform a continuous laser oscillation at room temperature.

摘要翻译： 半导体发光器件具有在衬底和含有氮的有源层之间包含Al的半导体层，其中在生长所述有源层之前从生长室中除去Al和氧，并且与Al一起掺入所述有源层中的氧浓度 被设定为使得所述半导体发光装置能够在室温下进行连续激光振荡的电平。