Optimization of diode-pumped doubly Q-switched mode-locked laser with acousto-optic modulator and Cr4+∶YAG saturable absorber

Tianli Feng; Shengzhi Zhao; Dechun Li; Guiqiu Li; Kejian Yang; Gang Zhang; Kang Cheng

doi:10.1117/1.OE.51.8.084202

2 August 2012 Optimization of diode-pumped doubly Q-switched mode-locked laser with acousto-optic modulator and Cr4+∶YAG saturable absorber

Tianli Feng, Shengzhi Zhao, Dechun Li, Guiqiu Li, Kejian Yang, Gang Zhang, Kang Cheng

Author Affiliations +

Optical Engineering, Vol. 51, Issue 8, 084202 (August 2012). https://doi.org/10.1117/1.OE.51.8.084202

Abstract

By considering the influence of the turn-off time and the modulation frequency of the acousto-optic (AO) modulator, the coupled rate equations for a diode-pumped doubly Q-switched and mode-locked (QML) laser with AO modulator and Cr4+∶YAG saturable absorber under Gaussian approximation are given. By numerically solving these equations, the key parameters of an optimally coupled doubly QML laser including the gain medium, the saturable absorber and the resonator as well as the modulation frequency of AO modulator are obtained, which can maximize the pulse energy of singly Q-switched envelope. A diode-pumped doubly QML Nd∶GdVO4 laser with AO modulator and Cr4+∶YAG saturable absorber is constructed and the experimental results are in agreement with the numerical simulations.

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Tianli Feng, Shengzhi Zhao, Dechun Li, Guiqiu Li, Kejian Yang, Gang Zhang, and Kang Cheng "Optimization of diode-pumped doubly Q-switched mode-locked laser with acousto-optic modulator and Cr4+∶YAG saturable absorber," Optical Engineering 51(8), 084202 (2 August 2012). https://doi.org/10.1117/1.OE.51.8.084202

Published: 2 August 2012

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