Frequency stabilization of 0.633-μm He-Ne laser using polarization modulation
- 1 June 1987
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Instrumentation and Measurement
- Vol. IM-36 (2) , 636-638
- https://doi.org/10.1109/TIM.1987.6312758
Abstract
A new technique is described for the frequency stabilization of an internal mirror two-mode He-Ne laser operating at 0.633 μm. The laser is placed in a small axial ac magnetic held which gives rise to polarization modulation of the two modes. The sum of the amplitude modulation produced is detected by phase-sensitive detection (PSD) and the error signal is used for frequency control. The frequency stability obtained is 1.9 × 10 −9 for an integration time of 1 s.Keywords
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