Study of displacement sensing based on laser mode splitting by intracavity quartz crystal wedges of HeNe lasers

Shulian Zhang; Jia Li; Yanmei Han; Yan Li; Yi Zhang

doi:10.1117/1.601690

1 June 1998 Study of displacement sensing based on laser mode splitting by intracavity quartz crystal wedges of HeNe lasers

Shulian Zhang, Jia Li, Yanmei Han, Yan Li, Yi Zhang

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Optical Engineering, Vol. 37, Issue 6, (June 1998). https://doi.org/10.1117/1.601690

An experiment is conducted on using laser mode splitting technology to measure displacement. A laser longitudinal mode is split into two frequencies (modes) by the birefringence effect of an intracavity quartz crystal wedge. The magnitude variation of frequency splitting is proportional to the displacement of the wedge crossing the intracavity laser beam. The dependence of sensitivity and measurement range on the wedge angle and angle between crystalline axis and intracavity laser beam is studied. A resolution of 10 nm is obtained.

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Shulian Zhang, Jia Li, Yanmei Han, Yan Li, and Yi Zhang "Study of displacement sensing based on laser mode splitting by intracavity quartz crystal wedges of HeNe lasers," Optical Engineering 37(6), (1 June 1998). https://doi.org/10.1117/1.601690

Published: 1 June 1998

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