Theoretical study of hybrid output coupler for optically pumped THz laser

Kong Weipeng; Wang Du; Guo Chao; Chen Chen; Li Zeyu; Luo Zhenfei; Zhou Xun; 

doi:10.11884/HPLPB201527.043102

Volume 27 Issue 04

Mar. 2015

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Kong Weipeng, Wang Du, Guo Chao, et al. Theoretical study of hybrid output coupler for optically pumped THz laser[J]. High Power Laser and Particle Beams, 2015, 27: 043102. doi: 10.11884/HPLPB201527.043102

Citation:

Kong Weipeng, Wang Du, Guo Chao, et al. Theoretical study of hybrid output coupler for optically pumped THz laser[J]. High Power Laser and Particle Beams, 2015, 27: 043102. doi: 10.11884/HPLPB201527.043102

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Theoretical study of hybrid output coupler for optically pumped THz laser

doi: 10.11884/HPLPB201527.043102

Kong Weipeng^1,2,
Wang Du^1,2,
Guo Chao³,
Chen Chen³,
Li Zeyu^1,2,
Luo Zhenfei^1,2,
Zhou Xun^{1,2
,
,},


1.
Research Center of Laser Fusion,CAEP,Mianyang 621900,China;
2.
Terahertz Research Center,CAEP,Mianyang 621900,China;
3.
College of Electronics and Information Engineering,Sichuan University,Chengdu 610065,China

Received Date: 2014-10-17
Rev Recd Date: 2014-10-31
Publish Date: 2015-03-23

Abstract

Abstract

This research presents the calculation method of transmittance, reflectance and loss for hybrid output coupler (HOC). We introduce Q factor for loss analyses to evaluate the quality of HOC. We simulate the suppression of F-P etalon effect and distortion of output THz beam pattern with a wedged substrate. A 0.3 wedge angle makes transmittance not sensitive to small change of wavelength and substrate thickness. The distortion introduced by the 0.3 wedge angle will not dramatically change the Gaussian beam pattern.
- optically pumped THz laser,
- high power CO2 laser pump,
- hybrid output coupler,
- wedged output coupler