High frequency optogalvanic signals and CO2 laser stabilisation

doi:10.1016/0030-4018(81)90010-9

Optics Communications

Volume 37, Issue 2, 15 April 1981, Pages 119-122

https://doi.org/10.1016/0030-4018(81)90010-9 Get rights and content

Abstract

The normal optogalvanic effect used in the stabilisation of CO₂ lasers decreases in amplitude with increase in frequency and disappears at 2–3 kHz. We show that there is also a high frequency optogalvanic effect in CO₂-N₂-He-Xe laser gas mixtures up to ∼ 100 kHz, explain its origin and use it to frequency stabilise a laser with long term (hours) frequency drift of < 50 kHz and frequency re-settability of < 100 kHz.

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High frequency optogalvanic signals and CO2 laser stabilisation☆

Abstract

Optics Comm.

J. Phys.

J. Opt. Soc. Am.

IEEE J. Quant. Electron.

High frequency optogalvanic signals and CO₂ laser stabilisation☆