Eur. Phys. J. Appl. Phys. 31, 31-36 (2005)
https://doi.org/10.1051/epjap:2005040

Diode-pumped passively Q-switched intracavity-frequency-doubling Nd:GdVO₄/KTP green laser with Cr₄₊:YAG saturable absorber

School of Information Science and Engineering, Shandong University, Jinan 250100, P.R. China

Corresponding author: guiqiu_li@hotmail.com

Received: 21 December 2004
Revised: 29 January 2005
Accepted: 4 February 2005
Published online: 21 June 2005

Abstract

The intracavity photon density is assumed to be Gaussian spatial distributions and the nonlinear loss that is due to second-harmonic generation (SHG) to the photon-density equation is given under Gaussian spatial distributions in the rate equations for a diode-pumped passively Q-switched intracavity-frequency-doubling Nd:GdVO₄/KTP laser with Cr⁴⁺:YAG saturable absorber. These space-dependent rate equations are solved numerically. The dependences of pulse width, pulse repetition rate, single-pulse energy and peak power on incident pump power are obtained for the generated-green-laser pulses. In the experiment, a diode-pumped passively Q-switched intracavity-frequency-doubling Nd:GdVO₄/KTP laser with Cr⁴⁺:YAG saturable absorber is realized and the experimental results are consistent with the numerical solutions.