Investigation of the operation characteristics of terahertz-wave parametric oscillator based on LiTaO3 | Zendy

Bo Sun | Zendy; Liu Jin-song | Zendy; Furi Ling | Zendy; Wang Kejia | Zendy; Daqing Zhu | Zendy; Yao Jian-Quan | Zendy

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Investigation of the operation characteristics of terahertz-wave parametric oscillator based on LiTaO3

Author(s) -

Bo Sun,

Liu Jin-song,

Furi Ling,

Wang Kejia,

Daqing Zhu,

Yao Jian-Quan

Publication year - 2009

Publication title -

acta physica sinica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.199

H-Index - 47

ISSN - 1000-3290

DOI - 10.7498/aps.58.1745

Subject(s) - terahertz radiation , polariton , prism , optics , parametric statistics , directivity , wavelength , optical parametric oscillator , attenuation coefficient , absorption (acoustics) , materials science , physics , optoelectronics , telecommunications , computer science , statistics , mathematics , antenna (radio)

Based on the basic principle of the stimulated polariton scattering process, the operation characteristics of terahertz-wave parametric oscillators TPOs using the LiTaO3 LT crystal, including the ability of frequency-tuning, THz gain and absorption coefficient and the output directivity of THz wave through the arrayed Si-prism coupler, is theoretically discussed in detail. It is found that the excellent performance of LT-TPO can be achieved through the employment of the short-wavelength pump, the high pump energy and short cavity for TPO, based on the characteristics of the A1-symmetry polariton mode and the outstanding nonlinear optical properties of LiTaO3, which is then proved to be a promising candidate material for TPO. The research results provide a useful guide for the future practical operation of LT-TPO.

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