Frequency tuning characteristics of a THz-wave by varying phase-matching angle and pump wavelength in a noncollinear phase-matching THz-wave parametric oscillator (TPO) are analyzed. A novel scheme to realize the tuning of a THz-wave by moving the cavity mirror forwards and backwards is proposed in a noncollinear phase-matching TPO. The parametric gain coefficients of the THz-wave in a LiNbO<sub>3</sub> crystal are explored under different working temperatures. The relationship between the poling period of periodically poled LiNbO<sub>3</sub> (PPLN) and the THz-wave frequency under the condition of a quasi-phase-matching configuration is deduced. Such analyses have an impact on the experiments of the TPO.
© 2013 Optical Society of Korea
(140.3070) Lasers and laser optics : Infrared and far-infrared lasers
(190.4410) Nonlinear optics : Nonlinear optics, parametric processes
(190.4970) Nonlinear optics : Parametric oscillators and amplifiers
Original Manuscript: October 9, 2012
Revised Manuscript: December 14, 2012
Manuscript Accepted: December 27, 2012
Published: February 25, 2013
Zhongyang Li, Pibin Bing, Degang Xu, and Jianquan Yao, "Frequency Tuning Characteristics of a THz-wave Parametric Oscillator," J. Opt. Soc. Korea 17, 97-102 (2013)
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