Two Schemes for Generating Efficient Terahertz Waves in Nonlinear Optical Crystals with a Mid-Infrared CO sub(2)

Terahertz wave generation is explored on the basis of difference frequency generation in nonlinear optical crystals with a mid-infrared CO sub(2)laser. The phase-matching angle and the grating period of periodically inverted GaAs in the 100-1000 pm (0.3-3 THz) range are also investigated on the basi...

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Published inChinese physics letters Vol. 28; no. 7; pp. 074215 - 1-074215-4
Main Authors RAO, Zhi-Ming, WANG, Xin-Bing, LU, Yan-Zhao, ZUO, Du-Luo, WU, Tao
Format Journal Article
LanguageEnglish
Published 01.01.2011
Subjects
Carbon dioxide
Carbon dioxide lasers
Crystals
Diffraction gratings
Gratings (spectra)
Nonlinearity
Phase matching
Wave generation
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Summary:Terahertz wave generation is explored on the basis of difference frequency generation in nonlinear optical crystals with a mid-infrared CO sub(2)laser. The phase-matching angle and the grating period of periodically inverted GaAs in the 100-1000 pm (0.3-3 THz) range are also investigated on the basis of the surface-emitted difference frequency generation. It is found that two schemes of phase-matching-applied collinear phase matching and phase-matching-applied non-collinear phase matching are efficient to obtain THz waves
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/28/7/074215