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Issue Eur. Phys. J. Appl. Phys.
Volume 44, Number 3, December 2008
Page(s) 273 - 276
Section Photonics
DOI 10.1051/epjap:2008178
Published online 01 November 2008

Eur. Phys. J. Appl. Phys. 44, 273-276 (2008)
DOI: 10.1051/epjap:2008178

Control of pulse width in a diode-pumped doubly Q-switched composite crystal laser with AO and GaAs saturable absorber

J. An, S. Zhao, G.Q. Li, K. Yang, D. Li, J. Wang and M. Li

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

anjing@mail.sdu.edu.cn

Received: 27 May 2008 / Accepted: 3 September 2008 / Published online: 1st November 2008

Abstract
The methods to control the pulse width of a laser-diode end-pumped doubly Q-switched Nd:YVO4/YVO4 composite crystal laser with acoustic-optic (AO) and GaAs saturable absorber has been theoretically and experimentally studied. By varying the laser beam radius in the Q-switchers and the pump beam radius in the gain medium, we provide efficient means to control the pulse duration. The coupled rate equations are used to analyze the process of the laser. The experimental results are consistent with the theoretical results.

PACS
42.55.Xi - Diode-pumped lasers.
42.60.Gd - Q-switching.
42.60.Jf - Beam characteristics: profile, intensity, and power; spatial pattern formation.

© EDP Sciences 2008


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