Laser frequency stabilization using folded cavity and mirror reflectivity
Laser frequency stabilization using folded cavity and mirror reflectivity
复制标题
使用折叠腔和镜面反射率稳定激光频率
DOI：
10.1016/j.optcom.2016.02.028
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发表时间：
2016
影响因子：
2.4
通讯作者：
Liu et al.
中科院分区：
文献类型：
--
作者：
羽多野忠，大野広大，相原翔学，江島丈雄;江島丈雄，加道雅孝，石野雅彦，青山雅人，安田恵子，保智己;Liu et al.
提出了一种利用光腔偏振特性实现激光稳频的新方法。在标准的法布里-珀罗腔中，腔镜的镀膜厚度被计算为使s波和p波的相移相同，但与标称厚度的轻微失谐会产生s波和p波的相位失谐。结果，每个波累积不同的往返相移，并以不同的频率谐振。利用这一偏振特性，误差信号由一个简单的装置产生，该装置由一个旋转45°的四分之一波片、一个偏振分束器和两个光电二极管组成。该方法具有与Pound-Drever-Hall技术类似的误差信号，但不需要任何频率调制。本文介绍了锁定理论和实验结果。
A new method of laser frequency stabilization using polarization property of an optical cavity is proposed. In a standard Fabry–Perot cavity, the coating layers thickness of cavity mirrors is calculated to obtain the same phase shift for s- and p-wave but a slight detuning from the nominal thickness can produce s- and p-wave phase detuning. As a result, each wave accumulates a different round-trip phase shift and resonates at a different frequency. Using this polarization property, an error signal is generated by a simple setup consisting of a quarter wave-plate rotated at 45°, a polarizing beam splitter and two photodiodes. This method exhibits similar error signal as the Pound–Drever–Hall technique but without need for any frequency modulation. Lock theory and experimental results are presented in this paper.