## Abstract

A diode-pumped dual-loss-modulated *Q*-switched and mode-locked (QML) $\mathrm{Nd}\text{:}\mathrm{Gd}{\mathrm{VO}}_{4}/\mathrm{KTP}$ green laser with an acousto-optic modulator (AOM) and GaAs saturable
absorber is presented. The experimental results show that the stability and the peak
power of the dual-loss-modulated QML $\mathrm{Nd}\text{:}\mathrm{Gd}{\mathrm{VO}}_{4}/\mathrm{KTP}$ green laser are significantly improved. The pulse width of the *Q*-switched pulse envelope in the dual-loss-modulation QML green laser has a
compression of 50% compared with that in the singly
passively QML green laser with GaAs. By
using a hyperbolic secant square function and considering the Gaussian distribution
of the intracavity photon density, the coupled equations for diode-pumped
dual-loss-modulated QML $\mathrm{Nd}\text{:}\mathrm{Gd}{\mathrm{VO}}_{4}$ green laser are given, and the numerical solutions of the equations are
in good agreement with the experimental results.

© 2010 Optical Society of America

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