利用压控射频振荡器理解Pound-Drever-Hall锁定：一项本科生实验
Understanding Pound-Drever-Hall locking using voltage controlled radio-frequency oscillators: An undergraduate experiment
摘要：
我们已经开发了一个高年级的本科生实验，说明频率稳定技术使用射频电子。主要目的是使用Pound-Drever-Hall方法将压控振荡器频率稳定到800 MHz的腔谐振。这种技术通常用于将激光器稳定在光学频率。通过仅使用射频设备，可以更彻底、更便宜地系统研究该技术的各个方面，并且没有眼睛危害。学生还学习模块化射频电子和基本的反馈控制回路。通过改变谐振器的温度，学生可以确定铜、铝和超级因瓦钢的热膨胀系数。
英文摘要：
We have developed a senior undergraduate experiment that illustrates frequency stabilization techniques using radio-frequency electronics. The primary objective is to frequency stabilize a voltage controlled oscillator to a cavity resonance at 800 MHz using the Pound-Drever-Hall method. This technique is commonly applied to stabilize lasers at optical frequencies. By using only radio-frequency equipment it is possible to systematically study aspects of the technique more thoroughly, inexpensively, and free from eye hazards. Students also learn about modular radio-frequency electronics and basic feedback control loops. By varying the temperature of the resonator, students can determine the thermal expansion coefficients of copper, aluminum, and super invar.
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