Function of a brewster angle-positioned birefrigent filter in improvement of intracavity frequency doubling

Guanghua Cheng, Yishan Wang, Lianjun Yu, Wei Zhao, Guofu Chen

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

The functions of birefringent filter (BF) narrowing the operation line width of fundamental-wave laser, and improving the stability of frequency-doubling laser are investigated in experiment and theory. The dependence of line width of fundamental wave and frequency-doubling efficiency on the thickness of BF, the thermal source in oscillator, the compensation for thermal effect with BF, and the position of BF in cavity, are investigated experimentally. The experimental results present that BF not only can narrow the line width of fundamental wave, but also compensate for the birefringence induced by thermal effect of intracavity elements, and decrease the laser loss, further increase dramatically the efficiency of frequency doubling and stability.

Original languageEnglish
Pages (from-to)284-288
Number of pages5
JournalGuangxue Xuebao/Acta Optica Sinica
Volume24
Issue number2
StatePublished - Feb 2004
Externally publishedYes

Keywords

  • Birefringent filter (BF)
  • Frequency doubling
  • Laser techniques
  • Line width
  • Thermal effects
  • Ti:sapphire laser

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