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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 4 — Feb. 13, 2012
  • pp: 4747–4752

High density fringes and phase behavior in birefringence dual frequency laser with multiple feedback

Zhaoli Zeng, Shulian Zhang, Yun Wu, Peng Zhang, Zhengqi Zhao, and Yan Li  »View Author Affiliations

Optics Express, Vol. 20, Issue 4, pp. 4747-4752 (2012)

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The high density intensity fringes and phase behavior in birefringent dual frequency laser with multiple feedback are studied for the first time. It was discovered that the fringes of output intensity are made of bipolar pulses with symmetric external cavity feedback and the fringe density is as high as compared to the conventional feedback. The high density cosine-like fringes are obtained with asymmetric external cavity feedback by adjusting the tilt angle of the feedback mirror and the fringe density is about 22 times higher compared to the conventional feedback. Moreover, there is a phase difference between the two cosine-like fringes and the phase difference is varied with the change of the external cavity length. The experimental results and a theoretical analysis are presented in this work. These results offer a large increase in the resolution for the optical feedback interferometer with the birefringence dual frequency laser.

© 2012 OSA

OCIS Codes
(140.1340) Lasers and laser optics : Atomic gas lasers
(260.1440) Physical optics : Birefringence
(260.3160) Physical optics : Interference

ToC Category:
Lasers and Laser Optics

Original Manuscript: December 7, 2011
Revised Manuscript: February 4, 2012
Manuscript Accepted: February 4, 2012
Published: February 10, 2012

Zhaoli Zeng, Shulian Zhang, Yun Wu, Peng Zhang, Zhengqi Zhao, and Yan Li, "High density fringes and phase behavior in birefringence dual frequency laser with multiple feedback," Opt. Express 20, 4747-4752 (2012)

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