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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 17 — Aug. 26, 2013
  • pp: 20090–20095

Third-order random lasing via Raman gain and Rayleigh feedback within a half-open cavity

Zinan Wang, Han Wu, Mengqiu Fan, Yunjiang Rao, Xinhong Jia, and Weili Zhang  »View Author Affiliations


Optics Express, Vol. 21, Issue 17, pp. 20090-20095 (2013)
http://dx.doi.org/10.1364/OE.21.020090


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Abstract

Third-order random lasing operating in 1670nm spectral band is experimentally demonstrated for the first time to the best of our knowledge, with only 2.45W pump threshold. The lasing cavity is formed by G.652 fiber and fiber loop mirrors (FLMs), while the former acts as the distributed reflector and the latter acts as the point reflector. The G.652 fiber and the FLMs are connected via a multi-band wavelength-division-multiplexer, which ensures each of the three Raman Stokes components generated in the long fiber is routed to one FLM and then reflected back with minimum loss. Unlike existing half-open random lasing cavities using fiber Bragg gratings, the reflection bandwidth of FLMs is wide enough to preserve the intrinsic spectral features of each lasing bands, providing a valuable platform to study the mechanism of high-order random lasing in fibers. Also, the reflection efficiency can be treated as an invariant as the pump power grows, significantly reducing the threshold of high-order random lasing. The stationary model is used to calculate the output power, and the results fit the experimental data well.

© 2013 OSA

OCIS Codes
(140.3490) Lasers and laser optics : Lasers, distributed-feedback
(140.3510) Lasers and laser optics : Lasers, fiber
(140.3550) Lasers and laser optics : Lasers, Raman
(290.5870) Scattering : Scattering, Rayleigh

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: June 28, 2013
Revised Manuscript: August 10, 2013
Manuscript Accepted: August 15, 2013
Published: August 19, 2013

Citation
Zinan Wang, Han Wu, Mengqiu Fan, Yunjiang Rao, Xinhong Jia, and Weili Zhang, "Third-order random lasing via Raman gain and Rayleigh feedback within a half-open cavity," Opt. Express 21, 20090-20095 (2013)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-21-17-20090


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