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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 35, Iss. 20 — Oct. 15, 2010
  • pp: 3486–3488

Widely tunable mid-IR difference-frequency generation based on fiber lasers

Jianhua Chang, Qinghe Mao, Sujuan Feng, Xiaoming Gao, and Changqing Xu  »View Author Affiliations

Optics Letters, Vol. 35, Issue 20, pp. 3486-3488 (2010)

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A wide tuning technique for mid-IR difference-frequency generation (DFG) with uniform grating periodically poled LiNbO 3 (PPLN) is presented. Based on the dispersion property of the PPLN, the quasi-phase matching (QPM) band for the pump can evolve to two separate bands, and the spacing between them can be increased with the decrease of the crystal temperature. Two such separate QPM bands can be used for increasing the idler tuning range when the crystal temperature is set to adapt the pump tuning. With the technique, an idler tuning range of 690 nm is experimentally achieved with fiber laser fundamental lights.

© 2010 Optical Society of America

OCIS Codes
(190.2620) Nonlinear optics : Harmonic generation and mixing
(190.4370) Nonlinear optics : Nonlinear optics, fibers

ToC Category:
Nonlinear Optics

Original Manuscript: July 20, 2010
Revised Manuscript: September 19, 2010
Manuscript Accepted: September 20, 2010
Published: October 13, 2010

Jianhua Chang, Qinghe Mao, Sujuan Feng, Xiaoming Gao, and Changqing Xu, "Widely tunable mid-IR difference-frequency generation based on fiber lasers," Opt. Lett. 35, 3486-3488 (2010)

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