Wavelength tuning at a pulsed Ti:sapphire laser with a birefringent filter

복굴절 필터를 사용한 펄스동작 Ti:sapphire 레이저의 파장 가변특성

  • 김병태 (청주대학교 광학공학과) ;
  • 이형권 (청주대학교 광학공학과)
  • Published : 1997.12.01


A pulsed Ti:sapphire laser with a Z-folded cavity, which was pumped by a freqeuncy-doubled Nd:YAG laser, was developed. It shows 120 nm wavelength tuning range from 740 nm to 860 nm with 90 nm FWHM under a pumping energy of 3 mJ with 18% output coupler. Using a birefringent filter, the effective efficiency was improved about 10 times compare to without a birefringent filter. The output energy obtained was $\365mu$Jwith 4 nm FWHM. And the wavelength tuning range was broadened to about 160 nm within an output energy fluctuation of $\pm$10%.



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