Eur. Phys. J. Appl. Phys.
Volume 39, Number 3, September 2007
|Page(s)||227 - 231|
|Section||Laser and Optics|
|Published online||12 July 2007|
Diode-pumped doubly Q-switched c-cut Nd:GdVO4 laser with AO modulator and GaAs saturable absorber
School of Information Science and Engineering, Shandong University, Jinan
250100, P.R. China
Corresponding author: email@example.com
Accepted: 12 June 2007
Published online: 12 July 2007
Using both acoustic-optic (AO) modulator and GaAs saturable absorber in the same cavity, a diode-pumped doubly Q-switched c-cut Nd:GdVO4 laser has been realized. This laser can generate the more symmetric pulse with shorter pulse width in comparison with singly AO or GaAs Q-switched laser. We also made a comparison between c-cut and a-cut Nd:GdVO4 crystals and the experimental results shows that the doubly Q-switched c-cut Nd:GdVO4 laser can generate narrower pulse with higher peak power when the incident pump power higher than 3.4 W. The coupled rate equations, in which the spatial distributions of the intracavity photon density and the population-inversion density are taken into account, are introduced to theoretically analyze the experimental results, and the experimental results are in fair agreement with the numerical solutions.
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, 2007
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