Spectral broadening and inhibition of amplitude and frequency modulation in Nd: glass regenerative amplifier

Yuqi Zhang; Xue Pan; Jiangfeng Wang; Xuechun Li

doi:10.1117/12.2074464

18 November 2014 Spectral broadening and inhibition of amplitude and frequency modulation in Nd: glass regenerative amplifier

Yuqi Zhang, Xue Pan, Jiangfeng Wang, Xuechun Li

Author Affiliations +

Proceedings Volume 9266, High-Power Lasers and Applications VII; 926616 (2014) https://doi.org/10.1117/12.2074464
Event: SPIE/COS Photonics Asia, 2014, Beijing, China

Abstract

In order to broaden the spectrum of laser pulse and reduce the gain narrowing effect in Nd:glass regenerative amplifier to realize the ambition of inhibiting amplitude and frequency modulation, proper quartz birefringence crystal plate is inserted into the cavity. The influence factors of central wavelength, depth of modulation and range of modulation are obtained theoretically. The width of the spectrum is broadened by controlling all the factors. Two kinds of thickness, 5mm and 6mm, are inserted into the regenerative amplifier cavity. The results of theoretical calculation and experiment both show that the effect of spectrum widening is evident, which reduces the gain narrowing effect to some extent. The amplitude and frequency modulation resulted from gain narrowing effect is inhibited when the central wavelength deflects. The simulated results show that inhibited effect of amplitude and frequency modulation is remarkable. And the method is a potential effective technique for amplitude and frequency modulation inhibition.

Citation Download Citation

Yuqi Zhang, Xue Pan, Jiangfeng Wang, and Xuechun Li "Spectral broadening and inhibition of amplitude and frequency modulation in Nd: glass regenerative amplifier", Proc. SPIE 9266, High-Power Lasers and Applications VII, 926616 (18 November 2014); https://doi.org/10.1117/12.2074464

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