掺Er光纤飞秒激光器中高信噪比载波包络位相偏移频率获取的实验研究
Experimental study on detection of the high signal-to-noise ratio of the carrier-envelope offset frequency in an Er-doped fiber femtosecond laser
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摘要: 在实验上分析了掺Er光纤光学频率梳中激光器与一级放大器之间光纤长度、光纤扰动以及放大器抽运功率对倍频程光谱和载波包络位相偏移频率(fo)信噪比的影响.通过系统优化,实现了40 dB信噪比的fo输出,为fo的长期锁定和光纤光学频率梳的实现提供了技术保障.Abstract: The key techniques for the realization of the femtosecond optical frequency comb are the detection of the carrier-envelop-offset frequency(fo) and the improvement of the signal to noise ratio(S/N) of fo.The influence of the length and the vibration of the fiber between the oscillator and the amplifier,and the pump power of the amplifier on the S/N of the fo is experimentally studied.With optimized parameters,a fo with 40 dB S/N is obtained in the Er-doped fiber femtosecond laser.
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