Applied Physics B

, Volume 81, Issue 5, pp 633–636

Pulse symmetry and pulse duration compression in a diode-pumped doubly passively Q-switched Nd:YVO4 lasers with Cr4+:YAG and GaAs saturable absorbers

Regular Paper

DOI: 10.1007/s00340-005-1944-9

Cite this article as:
Yang, K., Zhao, S. & Li, G. Appl. Phys. B (2005) 81: 633. doi:10.1007/s00340-005-1944-9


We present a simple technique to improve the symmetry of pulse emitted by doubly passively Q-switched lasers. Using both Cr4+:YAG and GaAs saturable absorbers in the same cavity, a diode-pumped doubly passively Q-switched Nd:YVO4 laser is realized for the fist time. This laser can generate more symmetric pulse with shorter pulse width and higher peak power compared with the solely passively Q-switched laser with Cr4+:YAG saturable absorber or GaAs coupler. The pulse symmetry factor ε of such a doubly passively Q-switched laser is experimentally shown to reach 1.05. Simulations by a rate-equation model for doubly passively Q-switched laser are in close agreement with the experimental results.

Copyright information

© Springer-Verlag 2005

Authors and Affiliations

  1. 1.School of Information Science and EngineeringShandong UniversityJinanP.R. China

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