1 May 2007 Laser-diode-pumped, doubly Q-switched, intracavity optical parametric oscillator considering Gaussian distribution of intracavity photon densities
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Optical Engineering, 46(5), 054202 (2007). doi:10.1117/1.2737448
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.
Jing Wang, Shengzhi Zhao, Guiqiu Li, Kejian Yang, De-chun Li, Jing An, Ming Li, "Laser-diode-pumped, doubly Q-switched, intracavity optical parametric oscillator considering Gaussian distribution of intracavity photon densities," Optical Engineering 46(5), 054202 (1 May 2007). http://dx.doi.org/10.1117/1.2737448
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KEYWORDS
Optical parametric oscillators

Q switched lasers

Ferroelectric materials

Crystals

Acousto-optics

Laser crystals

Modulators

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