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1. 发明授权

US5014280A Optical bistable laser diode and a method for controlling the same 失效
标题翻译：光双稳激光二极管及其控制方法
公开(公告)号：US5014280A
公开(公告)日：1991-05-07
申请号：US413745
申请日：1989-09-28
申请人： Tatsuyuki Sanada , Tetsufumi Odagawa
发明人： Tatsuyuki Sanada , Tetsufumi Odagawa
IPC分类号： G02F3/00 , G02F3/02 , H01S5/00 , H01S5/042 , H01S5/06 , H01S5/0625 , H01S5/227
CPC分类号： G02F3/026 , H01S5/0625 , H01S5/0602 , H01S5/2275
摘要： An optical bistable laser diode includes an elongated intrinsic active semiconductor element having upper and lower surfaces and a pair of spaced ends. A semiconductor clad layer is disposed on one of the surfaces of the semiconductor element and another semiconductor clad layer of a different conduction type is disposed on the other surface of the semiconductor element. One of the semiconductor layers is coextensive in length with the semiconductor element. The diode includes a mirror at each end of the semiconductor element presenting a resonator. The diode also includes first and second electrodes on the coextensive semiconductor layer. One electrode extends along the semiconductor layer from one end thereof for a distance L.sub.1. The other electrode extends along the semiconductor layer from the other end thereof for a distance L.sub.2. The electrodes are disposed in longitudinal alignment and the same are spaced apart a distance L.sub.3 presenting a gap therebetween defining a saturable absorption region in the active semiconductor layer. The distances L.sub.1, L.sub.2 and L.sub.3 are such that the same satisfy the relationship(L.sub.2 +L.sub.3 /2)/(L.sub.1 +L.sub.2 +L.sub.3).ltoreq.0.3.

2. 发明授权

US5412675A Semiconductor optical source capable of compensating for temperature-induced variation of laser oscillation threshold 失效
标题翻译：能够补偿激光振荡阈值的温度变化的半导体光源
公开(公告)号：US5412675A
公开(公告)日：1995-05-02
申请号：US90159
申请日：1993-07-28
申请人： Tetsufumi Odagawa
发明人： Tetsufumi Odagawa
IPC分类号： H01S5/042 , H01S5/00 , H01S5/068 , H01S5/0683 , H01S5/40 , H01S3/133
CPC分类号： H01S5/0014 , H01S5/0683 , H01S5/4025 , H01S5/06812
摘要： A semiconductor optical source includes a first laser diode supplied with a signal current pulse and a first bias current for producing an output optical signal pulse in response to the signal current pulse, a first biasing circuit for supplying the first bias current to the first laser diode, a second laser diode supplied with a second bias current for producing an output optical beam in response thereto, a second biasing circuit for supplying the second bias current to the first laser diode; a heat sink for maintaining the first laser diode and the second laser diode at a substantially identical temperature; and a threshold detection circuit for detecting a threshold of laser oscillation of the second laser diode, wherein the threshold detection circuit controls the first biasing circuit such that the first bias current is maintained at a level that is related to the threshold of the second laser diode.
摘要翻译： PCT No.PCT / JP92 / 01702 Sec。 371日期：1993年7月28日 102（e）日期1993年7月28日PCT提交1992年12月25日PCT公布。第WO93 / 13576号公报日期：1993年7月8日。半导体光源包括提供有信号电流脉冲的第一激光二极管和用于响应于信号电流脉冲产生输出光信号脉冲的第一偏置电流;第一偏置电路，提供给第一激光二极管的偏置电流;第二激光二极管，被提供有第二偏置电流，用于响应于第二激光二极管产生输出光束;第二偏置电路，用于将第二偏置电流提供给第一激光二极管; 用于将第一激光二极管和第二激光二极管保持在基本相同温度的散热器; 以及用于检测所述第二激光二极管的激光振荡阈值的阈值检测电路，其中所述阈值检测电路控制所述第一偏置电路，使得所述第一偏置电流保持在与所述第二激光二极管的阈值相关的水平。

3. 发明授权

US5987044A Semiconductor light source system having an optimized setting for driving a laser diode 失效
标题翻译：具有用于驱动激光二极管的优化设置的半导体光源系统
公开(公告)号：US5987044A
公开(公告)日：1999-11-16
申请号：US780934
申请日：1996-10-11
申请人： Tetsufumi Odagawa , Kiyohide Wakao
发明人： Tetsufumi Odagawa , Kiyohide Wakao
IPC分类号： H01S5/042 , H01S5/062 , H01S5/068 , H01S5/40 , H01S3/00
CPC分类号： H01S5/4025 , H01S5/06209 , H01S5/06213 , H01S5/06216 , H01S5/068 , H01S5/06812
摘要： A semiconductor light source system includes a laser diode that is operated in a variable temperature environment and a driver circuit, wherein the driver circuit sets a magnitude of a signal current supplied to the laser diode below an upper limit level that corresponds to a maximum operational temperature of the laser diode. The driver circuit simultaneously sets a relative magnitude of the signal current with respect to a bias current such that a sufficient extinction ratio is achieved in an output optical beam and further sets a relative magnitude of the signal current with respect to the bias current such that a sufficiently small oscillation delay is achieved in the laser diode.
摘要翻译：半导体光源系统包括在可变温度环境中操作的激光二极管和驱动电路，其中驱动电路将提供给激光二极管的信号电流的大小设置在对应于最大工作温度的上限电平以下的激光二极管。驱动器电路同时设置相对于偏置电流的信号电流的相对幅度，使得在输出光束中实现足够的消光比，并进一步相对于偏置电流设置信号电流的相对幅度，使得在激光二极管中实现了足够小的振荡延迟。

4. 发明授权

US5007061A Bistable semiconductor laser diode device 失效
标题翻译：双稳态半导体激光二极管器件
公开(公告)号：US5007061A
公开(公告)日：1991-04-09
申请号：US386266
申请日：1989-07-28
申请人： Tetsufumi Odagawa
发明人： Tetsufumi Odagawa
IPC分类号： G02F3/02 , H01S5/06
CPC分类号： G02F3/026 , H01S5/0609 , H01S5/0602
摘要： A bistable semiconductor laser device has reset light irradiation means for irradiating a reset light for stopping the delivery of a lasing light from the laser. The laser comprises an active layer comprising a gain region in which stimulated emission occurs to attain a optical gain and a saturable absorption region in which no optical gain is attained at the lasing wavelength, resetting of the laser being carried out by irradiating onto the gain region of the laser a light having a wavelength in accordance with which the irradiated light is amplified by stimulated emission thereby to reduce carriers in the gain region of the laser.

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