A gain-boosted terahertz-wave parametric generator in high frequency tuning range via pulse-seed injection

Longhuang Tang; Degang Xu; Yuye Wang; Chao Yan; Yixin He; Changzhao Li; Jining Li; Kai Zhong; Jianquan Yao

doi:10.1117/12.2506669

1 March 2019 A gain-boosted terahertz-wave parametric generator in high frequency tuning range via pulse-seed injection

Longhuang Tang, Degang Xu, Yuye Wang, Chao Yan, Yixin He, Changzhao Li, Jining Li, Kai Zhong, Jianquan Yao

Proceedings Volume 10917, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XII; 109170T (2019) https://doi.org/10.1117/12.2506669
Event: SPIE OPTO, 2019, San Francisco, California, United States

Abstract

A gain-boosted terahertz-wave parametric generator (TPG) in high frequency tuning range based on MgO-doped nearstoichiometric LiNbO₃ (MgO:SLN) crystal has been demonstrated with 1064 nm nanosecond pulsed laser pumping. The pulse-seed is provided by nanosecond singly resonant near-degenerated KTP optical parametric oscillator with the wavelength range of 1068.08 nm to 1084.76 nm. The terahertz tuning range of 0.97 THz to 4.07 THz was achieved. The maximum THz wave output signal was 4285mV at 1.82 THz under the pump energy of 180 mJ and pulse-seed energy of 20.2 mJ. During the frequency range of 1.25 THz to 3.43 THz, the THz output energies were larger than 2000mV. Compared with the maximum THz output energy, the THz energy attenuation factors of 0.55 dB, 1.71 dB and 3.31 dB were realized in pulse-seeded TPG at 2.5 THz, 3.0THz and 3.5THz, respectively. The significantly increasing of THz gain in high frequency range (<2.5 THz) was achieved.

Conference Presentation

Citation Download Citation

Longhuang Tang, Degang Xu, Yuye Wang, Chao Yan, Yixin He, Changzhao Li, Jining Li, Kai Zhong, and Jianquan Yao "A gain-boosted terahertz-wave parametric generator in high frequency tuning range via pulse-seed injection", Proc. SPIE 10917, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XII, 109170T (1 March 2019); https://doi.org/10.1117/12.2506669

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