【摘要】 飞秒激光频率梳被认为是连接光频和无线电频率的一个超精密齿轮,比较了自参考法锁相稳频飞秒激光频率梳和差频法单块结构飞秒激光频率梳的特点,前者光谱范围宽,但稳定性较差;后者稳定性较好,但光谱范围较窄。在差频腔单块结构飞秒激光频率梳的基础上,通过使用腔外压缩色散补偿方式压缩激光脉冲宽度,然后重新注入光子晶体光纤进行光谱扩展,获得了覆盖633 nm波长的更宽的光谱范围,为633 nm波长激光频率测量创造了条件。更多还原

【Abstract】 Femtosecond optical frequency comb is considered as a precise gear between the optical frequency and radio frequency.Both self reference phase lock optical frequency combs and monolithic scheme laser combs are compared,the former has wider spectrum and uglier stability,but the other has better stability and thinner spectrum.Based on the monolithic scheme laser comb,through compressing laser pulse width outside the cavity,then by using photonic crystal fiber widen spectrum,obtain wider spectrum,and the 633 nm wavelength is covered,it can be applied to measure the optical frequency including 633 nm wavelength.更多还原