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    • 75. 发明授权
    • Oscillator with mode control
    • 具有模式控制的振荡器
    • US06324191B1
    • 2001-11-27
    • US09481172
    • 2000-01-12
    • Christopher Horvath
    • Christopher Horvath
    • H01S3098
    • H01S3/08H01S3/08045H01S3/0805H01S3/081H01S3/106H01S3/1118
    • An oscillator for isolating a transverse electromagnetic (TEM) zero—zero mode pulsed laser beam includes a laser pumping diode that is mounted on a base to induce a multi-mode laser beam from a lasing medium. As initially induced, the multi-mode laser beam is directed along a path and is characterized by a beating signal which has a frequency that is based on amplitude variations of laser pulses in the multi-mode laser beam. Electronics detect this beating signal and generates a responsive error signal. With closed loop control, the error signal is used to advance a straightedge toward the path of the multi-mode laser beam to remove transverse modes from the multi-mode laser beam with the straightedge. This advancement continues until the error signal is a null and the zero—zero mode pulsed laser beam is thereby isolated.
    • 用于隔离横向电磁(TEM)零 - 零模式脉冲激光束的振荡器包括安装在基座上以从激光介质诱导多模激光束的激光泵浦二极管。 如最初感应的那样,多模激光束沿着路径被引导,并且其特征在于具有基于多模激光束中的激光脉冲的幅度变化的频率的跳动信号。 电子设备检测该跳动信号并产生响应误差信号。 通过闭环控制,误差信号用于使多模激光束的路径前进,以从具有直尺的多模激光束去除横模。 这种进展继续进行,直到误差信号为零,从而分离零零模式的脉冲激光束。