Frequency stabilization of CO<sub>2</sub> laser using photoacoustic effect

Jong-woon Choi; Mirek Kopica

doi:10.1117/12.533386

1 June 2004 Frequency stabilization of CO₂ laser using photoacoustic effect

Jong-woon Choi, Mirek Kopica

Proceedings Volume 5333, Laser Resonators and Beam Control VII; (2004) https://doi.org/10.1117/12.533386
Event: Lasers and Applications in Science and Engineering, 2004, San Jose, Ca, United States

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.

Citation Download Citation

Jong-woon Choi and Mirek Kopica "Frequency stabilization of CO₂ laser using photoacoustic effect", Proc. SPIE 5333, Laser Resonators and Beam Control VII, (1 June 2004); https://doi.org/10.1117/12.533386

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