公开(公告)号：EP0001714B1

公开(公告)日：1984-03-21

申请号：EP78300529.1

申请日：1978-10-23

申请人： THE POST OFFICE

发明人： Malyon, Derek John

IPC分类号： H01S3/13

CPC分类号： H01S3/136 ,  H01S3/137 ,  H01S3/139 ,  H01S5/06837 ,  H01S5/0687

公开(公告)号：EP0001714A1

公开(公告)日：1979-05-02

申请号：EP78300529.1

申请日：1978-10-23

申请人： THE POST OFFICE

发明人： Malyon, Derek John

IPC分类号： H01S3/13

CPC分类号： H01S3/136 ,  H01S3/137 ,  H01S3/139 ,  H01S5/06837 ,  H01S5/0687

摘要： Control apparatus for a semi-conductor laser device. Apparatus for controlling the emission wavelength and power of a semi-conductor laser device in which the laser driver (5) is connected in a feedback loop comprising a beam-splitter (6), a photodiode (8) and an amplifier (19), which loop controls the driver (5) to maintain the intensity of the laser emission constant. The emission is also sampled by a beam-splitter (7) and a photodiode (9), which is made frequency-dependent by a filter (10) interposed in the path of the beam. The outputs of the matched photodiodes (8) and (9) are fed via amplifiers (11) and (13) to the positive and negative inputs of a subtractor amplifier (12), the output of which is therefore dependent only upon the emission wavelength. This output is fed as negative feedback to an amplifier (15) for controlling an operating parameter (such as the temperature) of the laser (1) to maintain the wavelength constant.

摘要翻译： 半导体激光装置的控制装置。 用于控制半导体激光器件的发射波长和功率的装置，其中激光驱动器（5）连接在包括分束器（6），光电二极管（8）和放大器（19）的反馈回路中， 该循环控制驱动器（5）以维持激光发射的强度恒定。 发射也由分束器（7）和光电二极管（9）取样，该分束器（7）和光电二极管（9）由插入在光束的路径中的过滤器（10）制成。 匹配光电二极管（8）和（9）的输出通过放大器（11）和（13）馈送到减法器放大器（12）的正和负输入端，因此其输出因此仅取决于发射波长 。 该输出作为负反馈馈送到放大器（15），用于控制激光器（1）的操作参数（例如温度）以保持波长恒定。