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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 50, Iss. 31 — Nov. 1, 2011
  • pp: 5970–5976

Optimization of the pulse-width of diode-pumped passively Q-switched mode-locked c-cut Nd : GdVO 4 laser with a GaAs saturable absorber

Chao Han, Shengzhi Zhao, Dechun Li, Guiqiu Li, Kejian Yang, Gang Zhang, and Kang Cheng  »View Author Affiliations


Applied Optics, Vol. 50, Issue 31, pp. 5970-5976 (2011)
http://dx.doi.org/10.1364/AO.50.005970


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Abstract

By considering the single-photon absorption and two-photon absorption processes in the GaAs saturable absorber, the coupled rate equations for a diode-pumped passively Q-switched and mode-locked (QML) laser with GaAs coupler under Gaussian approximation are given. These rate equations are solved numerically. The key parameters of an optimally coupled passively QML laser with the shortest pulse-width envelope are determined. These key parameters include the parameters of the gain medium, the saturable absorber, and the resonator, which can minimize the pulse-width of a singly Q-switched envelope. Sample calculations for a diode-pumped passively Q-switched mode-locked c-cut Nd : GdVO 4 laser with a GaAs coupler are presented to demonstrate that the shortest pulse-width envelope can be obtained by selecting the optimal small-signal transmission of the saturable absorber and the reflectivity of the output mirror.

© 2011 Optical Society of America

OCIS Codes
(140.3480) Lasers and laser optics : Lasers, diode-pumped
(140.3540) Lasers and laser optics : Lasers, Q-switched
(140.3580) Lasers and laser optics : Lasers, solid-state
(140.4050) Lasers and laser optics : Mode-locked lasers
(140.3538) Lasers and laser optics : Lasers, pulsed

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: May 9, 2011
Revised Manuscript: September 5, 2011
Manuscript Accepted: September 7, 2011
Published: October 26, 2011

Citation
Chao Han, Shengzhi Zhao, Dechun Li, Guiqiu Li, Kejian Yang, Gang Zhang, and Kang Cheng, "Optimization of the pulse-width of diode-pumped passively Q-switched mode-locked c-cut Nd:GdVO4 laser with a GaAs saturable absorber," Appl. Opt. 50, 5970-5976 (2011)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-50-31-5970


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References

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