Open AccessInvestigation of the operation characteristics of terahertz-wave parametric oscillator based on LiTaO3
Author(s) -
Bo Sun,
Jinsong Liu,
Ling Fu-Ri,
Kejia Wang,
Zhu Da-qing,
Jianquan Yao
Publication year - 2009
Publication title -
wuli xuebao
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.