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11 November 1999 Distance measurement using internal cavity interferometer
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In this paper, a He-Ne laser not only acts as a pure light source in the interferometer, but also as part of the interferometer. When an interning system may put into the cavity of the laser, the numbers of the laser oscillating modes may be changed. If the change is detected, the distance is determined appropriately. Further accuracy data is obtained by driving the mirror moving with electric-mechanical method. Because of optical gain, the output signal is very easy to further process.
© (1999) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Mengchao Li, Songlin Zhuang, Gang Zheng, Ling Zhang, and Xiaorong Zhao "Distance measurement using internal cavity interferometer", Proc. SPIE 3782, Optical Manufacturing and Testing III, (11 November 1999);

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