温度对LiNbO3晶体THz辐射产生效率的影响

Abstract

Abstract: Subpicosecond terahertz (THz) pulses were generated by supershorted laser pulses pumping a nonlinearelectric-optical crystal LiNbO₃. Spectral analysis of THz pulse waveform reveals that the generation mechanism of THz radiation is nonlinear difference frequency effect. The laser power dependence of THz emission intensity was also investigated, the experimental curve slightly deviated from quadratic curve along with the increase of laser pumping power. By cooling of the crystal, the THz emission efficiency was increased.

Key words: terahertz (THz), difference frequency, electric-optical crystal, nonlinear effect, phonon

CLC Number:

CHEN Hua,, WANG Li, PENG Wei xian. Temperature Effect on Efficiency of Terahertz Radiation Emission in LiNbO3Crystal[J].J4, 2007, 45(02): 271-274.

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Temperature Effect on Efficiency of Terahertz Radiation Emission in LiNbO3Crystal

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