公开(公告)号：US20210167579A1

公开(公告)日：2021-06-03

申请号：US17100951

申请日：2020-11-23

Applicant: Kazuma IZUMIYA ,  Naoto JIKUTANI ,  Kazuhiro HARASAKA ,  Ryoichiro SUZUKI

Inventor： Kazuma IZUMIYA ,  Naoto JIKUTANI ,  Kazuhiro HARASAKA ,  Ryoichiro SUZUKI

IPC: H01S5/183 ,  H01S5/022

Abstract: 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：US20240332902A1

公开(公告)日：2024-10-03

申请号：US18577709

申请日：2022-06-10

Applicant: Kazuhiro HARASAKA ,  Naoto JIKUTANI

Inventor： Kazuhiro HARASAKA ,  Naoto JIKUTANI

IPC: H01S5/183 ,  H01S5/00 ,  H01S5/042 ,  H01S5/062

CPC classification number: H01S5/18311 ,  H01S5/0014 ,  H01S5/04256 ,  H01S5/06216 ,  H01S5/18327

Abstract: A surface emitting includes: an active layer; multiple reflectors facing each other with the active layer therebetween; and an electrode pair coupled to a power supply device and configured to inject current into the active layer. The surface emitting laser has: a current injection period in which the current is injected by the power supply device to oscillate no laser beam; and a current decrease period after the current injection period, in which a current value of the current injected into the active layer is lower than a current value of the current injected during the current injection period, to oscillate a laser beam.

公开(公告)号：US20240128725A1

公开(公告)日：2024-04-18

申请号：US18277387

申请日：2022-02-08

Applicant: Kazuma IZUMIYA ,  Naoto JIKUTANI ,  Kazuhiro HARASAKA

Inventor： Kazuma IZUMIYA ,  Naoto JIKUTANI ,  Kazuhiro HARASAKA

IPC: H01S5/42 ,  G01S7/481 ,  G01S17/08 ,  H01S5/0233 ,  H01S5/0237 ,  H01S5/042 ,  H01S5/183 ,  H01S5/40

CPC classification number: H01S5/426 ,  G01S7/4817 ,  G01S17/08 ,  H01S5/0233 ,  H01S5/0237 ,  H01S5/04257 ,  H01S5/18305 ,  H01S5/4018

Abstract: A surface-emitting laser array includes a substrate and a sub-arrays disposed on the substrate, the sub-arrays including a surface-emitting laser devices electrically connected to each other in parallel to emit light through the substrate, each of the surface-emitting laser devices having a light-emitting point and including a first semi-conducting layer of first conductivity. The laser array further includes a second semi-conducting layer of second conductivity, and a resonator disposed between the first semi-conducting layer and the second semi-conducting layer. The sub-arrays adjacent to each other include an electrode to electrically connect the first semi-conducting layer in the surface-emitting laser devices included in one of the sub-arrays and the second semi-conducting layer.

公开(公告)号：US20110115872A1

公开(公告)日：2011-05-19

申请号：US12910262

申请日：2010-10-22

Applicant: Kazuhiro HARASAKA ,  Shunichi SATO ,  Naoto JIKUTANI ,  Satoru SUGAWARA

Inventor： Kazuhiro HARASAKA ,  Shunichi SATO ,  Naoto JIKUTANI ,  Satoru SUGAWARA

IPC: B41J2/435 ,  H01S5/00 ,  G02B26/08 ,  G02B26/10

CPC classification number: H01S5/18394 ,  B41J2/45 ,  B82Y20/00 ,  G02B5/0833 ,  G02B26/124 ,  G02B27/0977 ,  G03G15/04072 ,  G03G15/0435 ,  G03G15/326 ,  G03G2215/0404 ,  H01S5/0425 ,  H01S5/18311 ,  H01S5/18327 ,  H01S5/1835 ,  H01S5/18355 ,  H01S5/18358 ,  H01S5/18369 ,  H01S5/18391 ,  H01S5/3202 ,  H01S5/3434 ,  H01S5/423 ,  H01S2301/166

Abstract: A disclosed surface-emitting laser element includes a substrate, multiple semiconductor layers stacked on the substrate including a resonator structure including an active layer, a semiconductor multilayer mirror on the resonator structure, and a confined structure where a current passage region is enclosed by at least an oxide generated by oxidation of part of a selective oxidation layer containing aluminum, an electrode provided around an emission region, 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 that of the central portion. The dielectric film is arranged such that a reflectance of a high-order transverse mode in a second direction is higher than that in a first direction, and a width of the current passage region in the first direction is greater than that in the second direction.

Abstract translation: 所公开的表面发射激光器元件包括：衬底，层叠在衬底上的多个半导体层，包括谐振器结构，该谐振器结构包括有源层，谐振器结构上的半导体多层反射镜，以及至少包含电流通过区域的限制结构 通过氧化生成的含有铝的选择性氧化层的部分的氧化物，设置在发光区域周围的电极，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， 周边部分低于中央部分的周边部分。 电介质膜被布置成使得第二方向上的高次横模的反射率高于第一方向的反射率，并且电流通过区域在第一方向上的宽度大于第二方向上的宽度。

公开(公告)号：US20160149375A1

公开(公告)日：2016-05-26

申请号：US15001959

申请日：2016-01-20

Applicant: Toshihiro ISHll ,  Satoru SUGAWARA ,  Yoshihiro OHBA ,  Kazuhiro HARASAKA ,  Shunichi SATO ,  Kazuhiko ADACHI

Inventor： Toshihiro ISHll ,  Satoru SUGAWARA ,  Yoshihiro OHBA ,  Kazuhiro HARASAKA ,  Shunichi SATO ,  Kazuhiko ADACHI

IPC: H01S5/022 ,  G06K15/12 ,  B41J2/47 ,  H01S5/42

CPC classification number: H01S5/02208 ,  B41J2/45 ,  B41J2/47 ,  B82Y20/00 ,  G06K15/129 ,  H01S5/02212 ,  H01S5/02248 ,  H01S5/02296 ,  H01S5/0425 ,  H01S5/0683 ,  H01S5/18311 ,  H01S5/18347 ,  H01S5/1835 ,  H01S5/18355 ,  H01S5/18358 ,  H01S5/18386 ,  H01S5/18391 ,  H01S5/18394 ,  H01S5/3202 ,  H01S5/34306 ,  H01S5/34333 ,  H01S5/423 ,  H01S2301/14

Abstract: A disclosed surface-emitting laser module includes a surface-emitting laser formed on a substrate to emit light perpendicular to its surface, a package including a recess portion in which the substrate having the surface-emitting laser is arranged, and a transparent substrate arranged to cover the recess portion of the package and the substrate having the surface-emitting laser such that the transparent substrate and the package are connected on a light emitting side of the surface-emitting laser. In the surface-emitting laser module, a high reflectance region and a low reflectance region are formed within a region enclosed by an electrode on an upper part of a mesa of the surface-emitting laser, and the transparent substrate is slanted to the surface of the substrate having the surface-emitting laser in a polarization direction of the light emitted from the surface-emitting laser determined by the high reflectance region and the low reflectance region.

公开(公告)号：US20160329903A1

公开(公告)日：2016-11-10

申请号：US15109857

申请日：2015-01-26

Applicant: Kazuhiko ADACHI ,  Kazuhiro HARASAKA ,  Akihiro ITOH

Inventor： Kazuhiko ADACHI ,  Kazuhiro HARASAKA ,  Akihiro ITOH

IPC: H03L7/26 ,  H01S5/00 ,  H01S5/183 ,  H01S5/024 ,  H05K1/02 ,  H05K1/11

CPC classification number: H03L7/26 ,  G04F5/14 ,  H01L23/345 ,  H01L2224/45144 ,  H01L2224/48091 ,  H01S5/005 ,  H01S5/02248 ,  H01S5/02453 ,  H01S5/183 ,  H05K1/028 ,  H05K1/0296 ,  H05K1/11 ,  H05K1/189 ,  H05K3/0052 ,  H05K2201/052 ,  H05K2201/055 ,  H05K2201/056 ,  H05K2201/09063 ,  H05K2201/10075 ,  H05K2201/10174 ,  H05K2201/2018 ,  H01L2924/00014 ,  H01L2924/00

Abstract: An atomic oscillator includes a gas cell and a plurality of components. The plurality of components includes a temperature control device for the gas cell; an excitation light source that emits excitation light to excite atoms enclosed in the gas cell; a temperature control device for the excitation light source; and a light receiving element that detects the excitation light that passes through the gas cell. The plurality of components is mounted on an insulating film having wiring.

Abstract translation: 原子振荡器包括气室和多个部件。 多个部件包括用于气室的温度控制装置; 激发光源，其发射激发光以激发包围在气室中的原子; 用于激发光源的温度控制装置; 以及检测通过气室的激发光的受光元件。 多个部件安装在具有布线的绝缘膜上。