The Transactions of the Korean Institute of Electrical Engineers C (대한전기학회논문지:전기물성ㆍ응용부문C)

The Korean Institute of Electrical Engineers (대한전기학회)
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Frequency and Power Stabilization of $CO_2$ Laser Using a Photoacoustic Effect

광음향효과에 의한 $CO_2$ 레이저 주파수 및 출력 안정화 방법

  • 최종운 (호남대 공대 정보통신공학과) ;
  • 유문종 (호남대 공대 정보통신공학과) ;
  • 최성웅 (전자통신연구원 디지털 방송연구단) ;
  • 서호성 (한국표준과학연구원)
  • Published : 2004.11.01
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Abstract

We stabilized the frequency and power of a high voltage excited CW CO2 laser on the peak of the Doppler broadened gain curve using the photoacoustic effect generated from the laser itself. The photoacoustic signal is directly coupled from an radio frequency discharge chamber via a capacitor microphone into a detector and a lock-in stabilizer. The frequency stability is estimated to be better then 1.2×10/sup -7/ at the transition P(20) line. The stabilized output power variation was reduced to from 77 % to 3.3 %.

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References

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