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Analyses of phase-matching parameter in difference frequency generation with AgGaS2 and AgGaSe2

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作者:

Song, Yue (Song, Yue.) | Wang, Li (Wang, Li.)

收录:

EI Scopus

摘要:

Interesting in generation and exploration of mid-infrared radiation has induced using optical parametric effect in nonlinear optical crystal with high nonlinearity, high transmission, phase-matching ability, and high sensitivity in room temperature, such as AgGaSe2(AGSe), AgGaS2(AGS) crystals. To achieve mid-infrared radiation, we use difference frequency generation (DFG) in AGS or AGSe crystals by pumping with the output of optical parametric oscillator. The mid-infrared radiation tunable characteristics of AGS and AGSe crystals under type-I phase-matching have been analyzed based on optical parameter DFG theory. Beam walk-off angle and acceptance angle limit conversion efficiency and restrict the DFG tuning wavelength range. We focus to research for effective nonlinear coefficient, walk-off angle and acceptance angle as functions of wavelength, the relationship between conversion efficiency and acceptance angle, and crystals length impact on the process of frequency conversion. We obtained 10 μm wavelength with a 10 mm crystal length, 1030nm pump, walk-off angles and acceptance angles of AGS and AGSe crystals are 1.19°and 0.68°, 0.107°and 0.171°respectively. Results are very useful for mid-infrared experimental studies on AgGaS2 and AgGaSe2 crystals.

关键词:

Phase matching Infrared radiation Crystal structure Optical parametric oscillators Optical frequency conversion Silver compounds Conversion efficiency

作者机构:

  • [ 1 ] [Song, Yue]Department of Applied Physics, Beijing University of Technology, Beijing 100022, China
  • [ 2 ] [Wang, Li]Department of Applied Physics, Beijing University of Technology, Beijing 100022, China

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来源 :

ISSN: 0277-786X

年份: 2008

卷: 6839

语种: 英文

被引次数:

WoS核心集被引频次: 0

SCOPUS被引频次: 2

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