CAJ | 학술논문

采用单模放大和包层抽运放大的级联方式,在主振荡功率放大系统中,将平均功率0.5 mW、脉宽20 ns以及重复频率为50 kHz的光脉冲安全放大到平均功率0.6 W、峰值功率600 W的脉冲输出.相应增益为30.8 dB.放大输出的脉冲信号信噪比为30 dB,脉冲形状基本没有发生畸变.在前置放大结构中抽运光通过级联熔融拉锥型波分复用器耦合,有效确保了抽运源(976 nm)的正常工作.
채용단모방대화포층추운방대적급련방식,재주진탕공솔방대계통중,장평균공솔0.5 mW、맥관20 ns이급중복빈솔위50 kHz적광맥충안전방대도평균공솔0.6 W、봉치공솔600 W적맥충수출.상응증익위30.8 dB.방대수출적맥충신호신조비위30 dB,맥충형상기본몰유발생기변.재전치방대결구중추운광통과급련용융랍추형파분복용기우합,유효학보료추운원(976 nm)적정상공작.
The fiber-based amplification of a commercially packaged,fiber pigtailed pulsed diode laser operating at wavelength of 1 064 nm (bandwidth of 0.45 nm) was reported.The cascaded Yb-doped fiber amplifier could operate safely by using cascaded fused wavelength division multiplexing (WDM) in each single-mode amplification stage.The total isolation of cascaded WDM could protect the laser diodes from being destroyed by feedback of pump/signal power.At repetition rate of 50 kHz,pulse duration of 20 ns and average power of 0.5 mW,output power up to 0.6 W and peak power up to 600 W were obtained,with a high signal to noise ratio of 30 dB.The gain of the whole system is 30.8 dB and pulse distortion is not been observed.