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Optical Engineering

Laser-diode-pumped, doubly Q-switched, intracavity optical parametric oscillator considering Gaussian distribution of intracavity photon densities
Author(s): Jing Wang; Shengzhi Zhao; Guiqiu Li; Kejian Yang; De-chun Li; Jing An; Ming Li
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Paper Abstract

By considering the Gaussian spatial distribution of the initial population-inversion density and the intracavity photon densities of the fundamental, the signal, and the idle lights, the rate equations of a laser-diode-pumped, doubly Q-switched, intracavity optical parametric oscillator (IOPO) with both acousto-optic modulator (AO) and Cr4+:YAG saturable absorber are derived. The influence of the pump rate, the thermal effect in the gain medium, and the change of the photon density along the cavity axis have also been taken into account the equations. In the experiment, a laser-diode-pumped, doubly Q-switched, Nd:YVO4/KTP IOPO with an acousto-optic (AO) modulator and a Cr:YAG saturable absorber is realized. The shortest pulse width of 6.7 ns has been obtained at the maximum pump power of 6.3 W. The experimental results agree well with the theoretical calculations.

Paper Details

Date Published: 1 May 2007
PDF: 8 pages
Opt. Eng. 46(5) 054202 doi: 10.1117/1.2737448
Published in: Optical Engineering Volume 46, Issue 5
Show Author Affiliations
Jing Wang, Shandong Univ. (China)
Shengzhi Zhao, Shandong Univ. (China)
Guiqiu Li, Shandong Univ. (China)
Kejian Yang, Shandong Univ. (China)
De-chun Li, Shandong Univ. (China)
Jing An, Shandong Univ. (China)
Ming Li, Shandong Univ. (China)

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