Investigation on terahertz parametric oscillators using GaP crystal with a noncollinear phase-matching scheme

Zhongyang LiCollege of Electric Power, North China University of Water Resources and Electric Power, Zhengzhou, Henan, People’s Republic of ChinaCorrespondence[email protected]
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Pibin BingCollege of Electric Power, North China University of Water Resources and Electric Power, Zhengzhou, Henan, People’s Republic of ChinaView further author information

Sheng YuanCollege of Electric Power, North China University of Water Resources and Electric Power, Zhengzhou, Henan, People’s Republic of ChinaView further author information

Degang XuCollege of Precision Instrument and Opto-electronics Engineering, Institute of Laser and Opto-electronics, Tianjin University, Tianjin, People’s Republic of ChinaView further author information

Jianquan YaoCollege of Precision Instrument and Opto-electronics Engineering, Institute of Laser and Opto-electronics, Tianjin University, Tianjin, People’s Republic of ChinaView further author information

Abstract

Terahertz parametric oscillator (TPO) using GaP as gain medium with a noncollinear phase-matching scheme is investigated. Frequency-tuning characteristics of the terahertz wave (THz-wave) by varying the phase-matching angle and pump wavelength are analyzed. Gain and absorption characteristics of the THz-wave are investigated. The characteristics of GaP and LiNbO₃ (LN) are compared when the two crystals are used as gain medium for TPO. The analyses indicate that GaP is more suitable than LN to be used as gain medium for TPO.

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Funding. This work was supported by the National Natural Science Foundation of China [grant numbers 61201101, 61205003, and 61172010] and Basic Research Projects and Advanced Technology of Henan Province [grant number 112300410326].

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Investigation on terahertz parametric oscillators using GaP crystal with a noncollinear phase-matching scheme

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