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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 35, Iss. 15 — Aug. 1, 2010
  • pp: 2561–2563

Temporal dynamics of two-photon-pumped amplified spontaneous emission in slab organic crystals

Hong-Hua Fang, Qi-Dai Chen, Ran Ding, Jie Yang, Yu-Guang Ma, Hai-Yu Wang, Bing-Rong Gao, Jing Feng, and Hong-Bo Sun  »View Author Affiliations


Optics Letters, Vol. 35, Issue 15, pp. 2561-2563 (2010)
http://dx.doi.org/10.1364/OL.35.002561


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Abstract

We have studied the ultrafast dynamics of two-photon-pumped amplified spontaneous emission (ASE) from a single crystal by the time-resolved fluorescence upconversion technique. With the increase of two-photon pump intensities, the emission decay time is dramatically shortened by 30 times (from 3 ns to ~87 ps), and the energy migration rate is acutely enhanced when ASE occurs. The stripe length is also found to play an important role in the formation of the ASE. Meanwhile, the gain coefficient is evaluated to be 15 cm 1 for 560 nm at an excitation intensity of 2.3 mJ / pulse / cm 2 by the variable stripe length technique.

© 2010 Optical Society of America

OCIS Codes
(160.4890) Materials : Organic materials
(190.4180) Nonlinear optics : Multiphoton processes
(190.7110) Nonlinear optics : Ultrafast nonlinear optics
(140.3613) Lasers and laser optics : Lasers, upconversion

ToC Category:
Nonlinear Optics

History
Original Manuscript: April 26, 2010
Revised Manuscript: June 29, 2010
Manuscript Accepted: July 2, 2010
Published: July 22, 2010

Citation
Hong-Hua Fang, Qi-Dai Chen, Ran Ding, Jie Yang, Yu-Guang Ma, Hai-Yu Wang, Bing-Rong Gao, Jing Feng, and Hong-Bo Sun, "Temporal dynamics of two-photon-pumped amplified spontaneous emission in slab organic crystals," Opt. Lett. 35, 2561-2563 (2010)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-35-15-2561


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