Sinusoidal frequency modulation on laser diode for frequency stabilization and displacement measurement
Sinusoidal frequency modulation on laser diode for frequency stabilization and displacement measurement
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激光二极管的正弦频率调制，用于频率稳定和位移测量
DOI：
10.1016/j.measurement.2015.12.021
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
M.
中科院分区：
文献类型：
--
作者：
Vu;T.-T.; Maeda;Y.; Aketagawa;M.
在本文中，我们提出对激光二极管（LD）进行正弦频率调制，以实现 LD 的频率稳定和零差干涉仪的位移测量。 LD 的中心频率稳定在 633 nm 波长附近碘 (I2) 分子的多普勒展宽吸收线。 LD 的频率在吸收线上进行调制，并利用同步检测来检测吸收信号。可以构建一种简单且低成本的零差位移测量干涉仪，可以获得高测量分辨率。
In this paper, we propose the sinusoidal frequency modulation on a laser diode (LD) to achieve both frequency stabilization of the LD and displacement measurement with a homodyne interferometer. The central frequency of the LD is stabilized to a Doppler broadened absorption line of iodine (I2) molecule near the wavelength of 633 nm. The frequency of the LD is modulated across the absorption line and synchronous detection is utilized to detect the absorption signal. A simple and low-cost homodyne displacement-measuring interferometer can be constructed that can attain high measurement resolution.