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optical gain and output characteristic of selenium vapour multiline laser on purity of helium

셀레늄증기 다중광선레이저의 헬륨 순도에 따른 광이득과 출력특성

  • 최상태 (경주대학교 컴퓨터전자공학부)
  • Published : 2002.11.01

Abstract

The purpose of this study is to measure and compare the output power characteristics and optical gain for selenium vapour laser depending on the He gas purity. The purity of the He gas was improved with a special He-filter. During the measurement the individual wavelengths were selected with a birefringent filter. The result shows that compared with those of laser without He-filter, the output-coupling power and small signal gain of laser with He-filter increase in the most of the lines. Especially, the output-coupling power and small signal gain for the strong lines (497.6 nm, 499.3 nm, 506.9 nm, 517.6 nm, 522.8 nm, 530.5 nm), blue(460.4 nm, 464.8 nm) and red(644.4 nm 649.1 nm) lines lies notably higher.

본 연구의 목적은 헬륨의 순도가 셀레늄증기 레이저에서의 출력특성과 광이득에 미치는 영향을 측정, 비교해보는 것이다. 헬륨의 순도는 특수 헬륨필터로써 개선하였다. 본 측정에서는 개개의 선들이 복굴절필터에 의해서 선택 되어졌다. 대부분의 선들이 헬륨필터를 사용한 레이저에서 더 높은 output-coupling 출력과 소신호 이득을 보여 주고, 특히 강력한 선들(497.6 nm, 499.3 nm, 506.9 nm, 517.6 nm, 522.8 nm, 530.5 nm)과 청색선(460.4 nm, 464.8 nm)및 적색선(644.4 nm, 649.1 nm)에서 현저히 더 높은 값을 보여 준다.

Keywords

References

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