Automatic control of laser diode current and optical power output
    1.
    发明授权
    Automatic control of laser diode current and optical power output 有权
    自动控制激光二极管电流和光功率输出

    公开(公告)号:US07423247B2

    公开(公告)日:2008-09-09

    申请号:US11626302

    申请日:2007-01-23

    IPC分类号: G01J1/32 H01S3/00 H01S3/13

    摘要: An automatic power control system provides a control signal that regulates the output power of at least one laser diode. Coarse adjustment of the control signal is provided by a first means, preferably a digital variable resistor, while fine adjustment and compensation is provided by a second means, preferably by a digital-to-analog converter that receives an input signal proportional to a sensed control system parameter. The control system includes an operational amplifier having a first input coupled to sense output power, and a second input coupled to a DAC to provide finer resolution control. Memory can store system parameter or system parameter variations that can be coupled to the DAC and/or variable resistor to enhance system stability over ambient variations.

    摘要翻译: 自动功率控制系统提供调节至少一个激光二极管的输出功率的控制信号。 控制信号的粗调是由第一装置,优选数字可变电阻器提供的,而微调和补偿由第二装置提供,优选地由接收与感测控制成正比的输入信号的数 - 模转换器 系统参数。 控制系统包括运算放大器,其具有耦合以感测输出功率的第一输入,以及耦合到DAC的第二输入以提供更精细的分辨率控制。 存储器可以存储可耦合到DAC和/或可变电阻器的系统参数或系统参数变化,以增强系统在环境变化方面的稳定性。

    Automatic control of laser diode current and optical power output
    2.
    发明授权
    Automatic control of laser diode current and optical power output 有权
    自动控制激光二极管电流和光功率输出

    公开(公告)号:US07166826B1

    公开(公告)日:2007-01-23

    申请号:US10294469

    申请日:2002-11-13

    IPC分类号: H01S3/00 H01S3/13

    摘要: An automatic power control system provides a control signal that regulates the output power of at least one laser diode. Coarse adjustment of the control signal is provided by a first means, preferably a digital variable resistor, while fine adjustment and compensation is provided by a second means, preferably by a digital-to-analog converter that receives an input signal proportional to a sensed control system parameter. The control system includes an operational amplifier having a first input coupled to sense output power, and a second input coupled to a DAC to provide finer resolution control. Memory can store system parameter or system parameter variations that can be coupled to the DAC and/or variable resistor to enhance system stability over ambient variations.

    摘要翻译: 自动功率控制系统提供调节至少一个激光二极管的输出功率的控制信号。 控制信号的粗调是由第一装置,优选数字可变电阻器提供的,而微调和补偿由第二装置提供,优选地由接收与感测控制成正比的输入信号的数 - 模转换器 系统参数。 控制系统包括运算放大器,其具有耦合以感测输出功率的第一输入,以及耦合到DAC的第二输入以提供更精细的分辨率控制。 存储器可以存储可耦合到DAC和/或可变电阻器的系统参数或系统参数变化,以增强系统在环境变化方面的稳定性。