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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 50, Iss. 26 — Sep. 10, 2011
  • pp: 5080–5084

Quasi synchronous tuning for grating feedback lasers

Erjun Zang, Shaokai Wang, Yang Zhao, Yu Peng, Tao Yang, Ye Li, Jianping Cao, Tianchu Li, and Zhanjun Fang  »View Author Affiliations

Applied Optics, Vol. 50, Issue 26, pp. 5080-5084 (2011)

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A general analytical form of the round trip phase shift in grating feedback diode lasers is proposed. Using the new form, it is obvious that the round trip phase shift can be independent of rotation angle in first order approximation when only one restriction condition is met. We call this the quasi synchronous tuning (QST) condition. In the QST region, a considerably large mode hopping free tuning range can be obtained. An adjustment structure with only one freedom is needed to accurately find and locate the quasi synchronous pivot, which is not strictly confined on the grating surface and its extension. It means that the external cavity diode lasers design can be easier and the laser can be more stable and reliable.

© 2011 Optical Society of America

OCIS Codes
(050.2770) Diffraction and gratings : Gratings
(140.2020) Lasers and laser optics : Diode lasers
(140.3410) Lasers and laser optics : Laser resonators
(140.3600) Lasers and laser optics : Lasers, tunable

ToC Category:
Lasers and Laser Optics

Original Manuscript: April 20, 2011
Revised Manuscript: July 27, 2011
Manuscript Accepted: August 1, 2011
Published: September 6, 2011

Erjun Zang, Shaokai Wang, Yang Zhao, Yu Peng, Tao Yang, Ye Li, Jianping Cao, Tianchu Li, and Zhanjun Fang, "Quasi synchronous tuning for grating feedback lasers," Appl. Opt. 50, 5080-5084 (2011)

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