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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 6 — Mar. 24, 2014
  • pp: 6577–6585

Self-Q-switched, orthogonally polarized, dual-wavelength laser using long-lifetime Yb3+ crystal as both gain medium and saturable absorber

Jin-Long Xu, Yue-Xia Ji, Ye-Qing Wang, Zhen-Yu You, Hong-Yan Wang, and Chao-Yang Tu  »View Author Affiliations

Optics Express, Vol. 22, Issue 6, pp. 6577-6585 (2014)

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A novel self-Q-switched and orthogonally polarized dual-wavelength laser has been investigated with Yb3+-doped CGB disordered crystals. By slightly inclining output coupler to introduce the Fresnel loss, we realized simultaneously dual-wavelength laser operation at 1052.6 nm in E//b polarization and 1057.7 nm in E//c polarization with a frequency difference of 1.38 THz. Self-Q-switched pulse generation was observed in this free-running laser, originating from the nonlinear reabsorption effect of Yb:CGB as well as the strong storage of inversion population induced by the long excited-state lifetime (~1 ms). Pulse duration of 287 ns was obtained with an output average power of 416 mW and a repetition rate of 35 kHz. The self-Q-switching effect increased the peak power by 100 times the average power. This very simple laser, free from the complexity and high-cost of additional intracavity polarization modulator and Q-switcher, may be applied for constructing miniature, integrated and portable laser system.

© 2014 Optical Society of America

OCIS Codes
(140.3380) Lasers and laser optics : Laser materials
(140.3540) Lasers and laser optics : Lasers, Q-switched
(140.3580) Lasers and laser optics : Lasers, solid-state
(140.3518) Lasers and laser optics : Lasers, frequency modulated
(140.3615) Lasers and laser optics : Lasers, ytterbium

ToC Category:
Lasers and Laser Optics

Original Manuscript: January 13, 2014
Revised Manuscript: February 27, 2014
Manuscript Accepted: February 27, 2014
Published: March 13, 2014

Jin-Long Xu, Yue-Xia Ji, Ye-Qing Wang, Zhen-Yu You, Hong-Yan Wang, and Chao-Yang Tu, "Self-Q-switched, orthogonally polarized, dual-wavelength laser using long-lifetime Yb3+ crystal as both gain medium and saturable absorber," Opt. Express 22, 6577-6585 (2014)

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