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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 25 — Dec. 8, 2008
  • pp: 20176–20185

Diode-pumped passively Q-switched and mode-locked Nd:GdVO4 laser at 1.34 µm with V:YAG saturable absorber

Kejian Yang, Shengzhi Zhao, Jingliang He, Baitao Zhang, Chunhua Zuo, Guiqiu Li, Dechun Li, and Ming Li  »View Author Affiliations


Optics Express, Vol. 16, Issue 25, pp. 20176-20185 (2008)
http://dx.doi.org/10.1364/OE.16.020176


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Abstract

Using V:YAG as the saturable absorber, a diode-pumped passively Q-switched and mode-locked Nd:GdVO4 laser at 1.34µm is realized. Nearly 100% modulation depth of mode-locking has been achieved. The width of the mode-locked pulse is estimated to be less than 460ps with 125MHz repetition rate within an about 1µs-long Q-switched pulse envelope. A maximum output power of 220mW and Q-switched pulse energy of 10.5µJ is obtained. Using the hyperbolic secant function methods, a fluctuation rate equation model considering the Gaussian distribution of the intracavity photon density and the population inversion in the gain medium as well as the ground-state population intensity of the saturable absorber has been proposed to describe the mode-locking process of diode-pumped Nd:GdVO4/V3+:YAG laser. With the space-dependent rate equations solved numerically, the theoretical calculations reproduce the laser characteristics well.

© 2008 Optical Society of America

OCIS Codes
(140.3430) Lasers and laser optics : Laser theory
(140.3480) Lasers and laser optics : Lasers, diode-pumped
(140.3540) Lasers and laser optics : Lasers, Q-switched
(140.4050) Lasers and laser optics : Mode-locked lasers

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: July 21, 2008
Revised Manuscript: October 29, 2008
Manuscript Accepted: October 29, 2008
Published: November 24, 2008

Citation
Kejian Yang, Shengzhi Zhao, Jingliang He, Baitao Zhang, Chunhua Zuo, Guiqiu Li, Dechun Li, and Ming Li, "Diode-pumped passively Q-switched and modelocked Nd:GdVO4 laser at 1.34 μm with V:YAG saturable absorber," Opt. Express 16, 20176-20185 (2008)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-16-25-20176


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