公开(公告)号：US5497390A

公开(公告)日：1996-03-05

申请号：US9930

申请日：1993-01-27

申请人： Hidenao Tanaka ,  Akinori Watabe ,  Junichi Shimada ,  Yoshitada Katagiri ,  Yoshio Suzuki

发明人： Hidenao Tanaka ,  Akinori Watabe ,  Junichi Shimada ,  Yoshitada Katagiri ,  Yoshio Suzuki

IPC分类号： G06K1/12 ,  G06K7/10 ,  G11B7/125 ,  G11B11/105 ,  H01S5/062 ,  H01S5/0625 ,  H01S5/0683 ,  H01S5/10 ,  H01S5/34 ,  H01S3/19

CPC分类号： B82Y20/00 ,  G06K1/126 ,  G06K7/10564 ,  G06K7/10584 ,  G11B7/127 ,  H01S5/0625 ,  H01S5/10 ,  G06K2207/1018 ,  G11B11/10532 ,  H01S2301/14 ,  H01S5/06236 ,  H01S5/0683 ,  H01S5/1003 ,  H01S5/3404

摘要： A semiconductor laser apparatus includes a semiconductor substrate, a first cladding layer, an active layer, a second cladding layer, a second electrode, and a pair of resonator mirrors. The semiconductor substrate has a first electrode on one surface. The first cladding layer is formed on the other surface of the semiconductor substrate. The active layer is placed on the cladding layer. The second cladding layer is placed on the active layer. The second electrode is placed on the second cladding layer. The pair of resonator mirrors are placed in a waveguide direction perpendicular to the surfaces of the semiconductor substrate to oppose each other. The active layer is constituted by a quantum well layer having a tensilely strain. The second electrode is separated into portions not less than two portions.

摘要翻译： 半导体激光装置包括半导体基板，第一包层，有源层，第二包层，第二电极和一对谐振镜。 半导体衬底在一个表面上具有第一电极。 第一包层形成在半导体衬底的另一个表面上。 有源层放置在包层上。 第二包层放置在有源层上。 第二电极被放置在第二覆层上。 一对谐振器反射镜被放置在垂直于半导体衬底的表面的波导方向上以彼此相对。 有源层由具有拉伸应变的量子阱层构成。 第二电极被分成不少于两部分。

公开(公告)号：US5504722A

公开(公告)日：1996-04-02

申请号：US319242

申请日：1994-10-06

申请人： Hidenao Tanaka ,  Akinori Watabe ,  Junichi Shimada ,  Yoshitada Katagiri ,  Yoshio Suzuki

发明人： Hidenao Tanaka ,  Akinori Watabe ,  Junichi Shimada ,  Yoshitada Katagiri ,  Yoshio Suzuki

IPC分类号： G01B9/02 ,  G11B7/125 ,  G11B11/105 ,  H01S5/062 ,  G11B11/00 ,  G11B7/00

CPC分类号： G11B7/127 ,  G11B11/10545 ,  G11B11/10576 ,  H01S5/06236

摘要： A semiconductor laser apparatus includes a semiconductor substrate, a first cladding layer, an active layer, a second cladding layer, a second electrode, and a pair of resonator mirrors. The semiconductor substrate has a first electrode on one surface. The first cladding layer is formed on the other surface of the semiconductor substrate. The active layer is placed on the cladding layer. The second cladding layer is placed on the active layer. The second electrode is placed on the second cladding layer. The pair of resonator mirrors are placed in a waveguide direction perpendicular to the surfaces of the semiconductor substrate to oppose each other. The active layer is constituted by a quantum well layer having a tensilely strain. The second electrode is separated into portions not less than two portions.

摘要翻译： 半导体激光装置包括半导体基板，第一包层，有源层，第二包覆层，第二电极和一对谐振镜。 半导体衬底在一个表面上具有第一电极。 第一包层形成在半导体衬底的另一个表面上。 有源层放置在包层上。 第二包层放置在有源层上。 第二电极被放置在第二覆层上。 一对谐振器反射镜被放置在垂直于半导体衬底的表面的波导方向上以彼此相对。 有源层由具有拉伸应变的量子阱层构成。 第二电极被分成不少于两部分。

公开(公告)号：US5113071A

公开(公告)日：1992-05-12

申请号：US682144

申请日：1991-04-08

申请人： Renshi Sawada ,  Hidenao Tanaka ,  Osamu Ohguchi ,  Junichi Shimada

发明人： Renshi Sawada ,  Hidenao Tanaka ,  Osamu Ohguchi ,  Junichi Shimada

IPC分类号： G01D5/38

CPC分类号： G01D5/38

摘要： An encoder includes a semiconductor laser capable of emitting two coherent light beams from two end faces thereof, respectively. The end faces of the semiconductor laser are arranged such that the coherent light beams intersect each other. The two coherent light beams emitted from the end faces of the semiconductor laser are incident on a scale having a plurality of gratings. The two coherent light beams are diffracted by the gratings, resulting in two diffracted light beams. The two diffracted light beams interfere with each other, and the intensity of the resultant interference light beam is detected by a detector. In response to this detection, the detector produces a signal corresponding to the intensity change which is proportional to the relative moving distance between the detector and the scale.