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    • 4. 发明申请
    • PULSED LASER SOURCE WITH ADJUSTABLE GRATING COMPRESSOR
    • 脉冲激光源与可调式压光机
    • WO2007046833A3
    • 2008-10-09
    • PCT/US2005046537
    • 2005-12-20
    • IMRA AMERICA INCSHAH LAWRENCE
    • SHAH LAWRENCE
    • H01S3/10
    • H01S3/0057B23K26/0624G02B6/02138G02B6/02142G02B6/02147G02B6/13
    • Various embodiments described herein relate to a laser source for producing a pulsed laser beam comprising a plurality of ultrashort optical pulses having a variable repetition rate. In one embodiment, the laser source comprises a fiber oscillator, which outputs optical pulses and a pulse stretcher disposed to receive the optical pulses. The optical pulses have an optical pulse width. The pulse stretcher has dispersion that increases the optical pulse width yielding stretched optical pulses. The laser source further comprises a fiber amplifier disposed to receive the stretched optical pulses. The fiber optical amplifier has gain so as to amplify the stretched optical pulses. The laser source includes an automatically adjustable grating compressor having dispersion that reduces the optical pulse width. The grating compressor automatically adjusts this dispersion for different repetition rates.
    • 本文描述的各种实施例涉及用于产生脉冲激光束的激光源,其包括具有可变重复率的多个超短光脉冲。 在一个实施例中,激光源包括输出光脉冲的光纤振荡器和布置成接收光脉冲的脉冲展宽器。 光脉冲具有光脉冲宽度。 脉冲展宽器具有增加产生拉伸光脉冲的光脉冲宽度的色散。 激光源还包括光纤放大器,用于接收延伸的光脉冲。 光纤放大器具有增益以便放大拉伸的光脉冲。 激光源包括具有减小光脉冲宽度的色散的自动调节光栅压缩器。 光栅压缩机自动调整不同重复率的色散。