Hänsch–Couillaud locking of Mach–Zehnder interferometer for carrier removal from a phase-modulated optical spectrum
Hänsch–Couillaud locking of Mach–Zehnder interferometer for carrier removal from a phase-modulated optical spectrum
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DOI：
10.1364/josab.27.001530
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发表时间：
2009-11
影响因子：
1.9
通讯作者：
J. Bateman;R. Murray;M. Himsworth;H. Ohadi;A. Xuereb;T. Freegarde
中科院分区：
文献类型：
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作者：
J. Bateman;R. Murray;M. Himsworth;H. Ohadi;A. Xuereb;T. Freegarde
我们描述和分析的操作和稳定的马赫-曾德尔干涉仪，分离载波和相位调制的激光场的一阶边带，并使用Hansch-Couillaud方法锁定。除了必要的衰减，我们的干涉仪介绍，通过全内反射，一个显着的偏振相关的相位延迟。我们采用了一般的治疗来描述一个干涉仪的对象，影响沿着一条路径的字段，我们研究这个相位延迟如何影响误差信号。我们讨论了必要的要求，以确保锁定点保持不变时，相位调制引入，我们证明和表征这种锁定实验。最后，我们提出了一个扩展，这种锁定策略使用外差检测。
We describe and analyze the operation and stabilization of a Mach–Zehnder interferometer, which separates the carrier and the first-order sidebands of a phase-modulated laser field, and which is locked using the Hansch–Couillaud method. In addition to the necessary attenuation, our interferometer introduces, via total internal reflection, a significant polarization-dependent phase delay. We employ a general treatment to describe an interferometer with an object that affects the field along one path, and we examine how this phase delay affects the error signal. We discuss the requirements necessary to ensure the lock point remains unchanged when phase modulation is introduced, and we demonstrate and characterize this locking experimentally. Finally, we suggest an extension to this locking strategy using heterodyne detection.