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    • 6. 发明授权
    • Generation of wideband high power coherent optical radar signals
    • 生成宽带大功率相干光学雷达信号
    • US07286209B1
    • 2007-10-23
    • US11346156
    • 2006-02-03
    • Francis W. HopwoodJohn H. GlezenMichael M. FitelsonGeorge R. GrayChristopher M. Patrick
    • Francis W. HopwoodJohn H. GlezenMichael M. FitelsonGeorge R. GrayChristopher M. Patrick
    • G01C3/08H01S3/10H01S3/13
    • G01S7/491G01S7/4815G01S7/4911H01S3/1307H01S3/2383H01S3/2391
    • An arrangement for generating a high power optical radar beam. The arrangement includes first and second laser sources each having a first laser for generating an optical beam of a relatively low frequency F1 and a second laser for generating an optical beam of relatively higher frequency F2. Each laser source provides a first optical beam of frequency F2 and a second optical beam of frequency F1+F2. The arrangement also includes first and second waveform generators each having a modulator and a mixer. A first waveform generator receives the optical beams from the first laser source and a modulation signal for modulating the F1+F2 optical beam. The first waveform generator is operative to provide an output optical beam of frequency F1 having all of the modulation applied to the optical beam of frequency F1+F2. A phase comparator receives the outputs from the waveform generators and if they deviate in phase, a feedback device applies a corrective signal to the modulator of the second waveform generator until the two output signals are identical. When they are identical, the phase comparator is operable to provide an output optical beam which is the coherent addition of its two input optical beams.
    • 一种用于产生高功率光学雷达光束的装置。 该装置包括第一和第二激光源,每个激光源具有用于产生相对低频率F 1的光束的第一激光器和用于产生相对较高频率F 2的光束的第二激光器。 每个激光源提供频率为F 2的第一光束和频率为F 1 + F 2的第二光束。 该装置还包括具有调制器和混频器的第一和第二波形发生器。 第一波形发生器接收来自第一激光源的光束和用于调制F 1 + F 2光束的调制信号。 第一波形发生器用于提供具有施加到频率F 1 + F 2的光束的所有调制的频率F 1的输出光束。 相位比较器接收来自波形发生器的输出,并且如果它们相位偏离,反馈装置将校正信号施加到第二波形发生器的调制器,直到两个输出信号相同。 当它们相同时,相位比较器可操作地提供作为其两个输入光束的相干相加的输出光束。