Perfect phase matching regulation in cubic semiconductors based on linear electro-optic effect

Fangjie Li; Kai Zhong; Hongzhan Qiao; Xianzhong Zhang; Degang Xu; Jianquan Yao

doi:10.1117/12.2642113

16 December 2022 Perfect phase matching regulation in cubic semiconductors based on linear electro-optic effect

Fangjie Li, Kai Zhong, Hongzhan Qiao, Xianzhong Zhang, Degang Xu, Jianquan Yao

Proceedings Volume 12324, Infrared, Millimeter-Wave, and Terahertz Technologies IX; 123240D (2022) https://doi.org/10.1117/12.2642113
Event: SPIE/COS Photonics Asia, 2022, Online Only

Abstract

A novel method to modulate the phase-matching (PM) condition based on the linear electro-optic (EO) effect in cubic nonlinear crystals was proposed to enhance the efficiency and broaden the PM bandwidth of terahertz generation. Taking ZnTe and CdTe crystals as examples, monochromatic terahertz waves can be difference-frequency generated (DFG) and agilely tuned under perfect PM condition over a range of 2.25 THz and 1.84 THz, respectively, which also corresponds to large allowable wavelength and divergence angle of the pump beam. Simultaneous wideband terahertz generation via optical rectification (OR) modulated by the EO effect was also investigated. It introduces an extra degree of freedom to fulfill PM condition of different excitation wavelengths and polarization states by OR, where the polarization selectivity can be optimized by controlling the applied voltage.

Conference Presentation

Citation Download Citation

Fangjie Li, Kai Zhong, Hongzhan Qiao, Xianzhong Zhang, Degang Xu, and Jianquan Yao "Perfect phase matching regulation in cubic semiconductors based on linear electro-optic effect", Proc. SPIE 12324, Infrared, Millimeter-Wave, and Terahertz Technologies IX, 123240D (16 December 2022); https://doi.org/10.1117/12.2642113

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