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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 33, Iss. 4 — Feb. 15, 2008
  • pp: 357–359

Optical phase locking with a large and tunable frequency difference based on a vertical-cavity surface-emitting laser

Wenlan Chen, Xianghui Qi, Lin Yi, Ke Deng, Zhong Wang, Jingbiao Chen, and Xuzong Chen  »View Author Affiliations


Optics Letters, Vol. 33, Issue 4, pp. 357-359 (2008)
http://dx.doi.org/10.1364/OL.33.000357


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Abstract

We present a novel method to phase lock two lasers with a controllable frequency difference. A microwave frequency-modulated vertical-cavity surface-emitting laser is used to phase connect two diode lasers by a two-step injection locking. The phase fluctuations of the two lasers are measured to be 6.4 × 10 4 rad 2 , corresponding to 99.94% phase coherence. The frequency difference of the two lasers is tunable up to tens of gigahertz. The sideband suppression of the slave laser is more than 30 dB at 30 μ W seed power. A narrow linewidth spectrum of coherent population trapping in rubidium is achieved using such beams.

© 2008 Optical Society of America

OCIS Codes
(140.3550) Lasers and laser optics : Lasers, Raman
(020.1335) Atomic and molecular physics : Atom optics
(020.3320) Atomic and molecular physics : Laser cooling
(140.7260) Lasers and laser optics : Vertical cavity surface emitting lasers

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: November 12, 2007
Revised Manuscript: December 28, 2007
Manuscript Accepted: December 28, 2007
Published: February 12, 2008

Citation
Wenlan Chen, Xianghui Qi, Lin Yi, Ke Deng, Zhong Wang, Jingbiao Chen, and Xuzong Chen, "Optical phase locking with a large and tunable frequency difference based on a vertical-cavity surface-emitting laser," Opt. Lett. 33, 357-359 (2008)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-33-4-357


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