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Proceedings Paper

Frequency stabilization of CO2 laser using photoacoustic effect
Author(s): Jong-woon Choi; Mirek Kopica
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Paper Abstract

We stabilized the high voltage (HV) excited CO2 laser to the center of the gain curves using a photoacoustic effect generated from the laser itself. A commercial condenser microphone is located in the plasma free region. This detects pressure waves occurring in the plasma free region when laser radiation is absorbed. The signal from the microphone is used to control a feedback circuit to stabilize the frequency and power of the laser radiation. The frequency stability is estimated to be better then 3X10-8.

Paper Details

Date Published: 1 June 2004
PDF: 3 pages
Proc. SPIE 5333, Laser Resonators and Beam Control VII, (1 June 2004); doi: 10.1117/12.533386
Show Author Affiliations
Jong-woon Choi, Honam Univ. (South Korea)
Mirek Kopica, Military Univ. of Technology (Poland)


Published in SPIE Proceedings Vol. 5333:
Laser Resonators and Beam Control VII
Alexis V. Kudryashov, Editor(s)

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