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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 13, Iss. 14 — Jul. 11, 2005
  • pp: 5387–5392

Random laser action in organic film during the photopolymerization process

Stéphane Klein, Olivier Crégut, Denis Gindre, Alex Boeglin, and Kokou D. Dorkenoo  »View Author Affiliations


Optics Express, Vol. 13, Issue 14, pp. 5387-5392 (2005)
http://dx.doi.org/10.1364/OPEX.13.005387


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Abstract

We report on transient laser action during the photopolymerization process in organic thin films of acrylate monomers doped with a laser dye. The emission spectrum was monitored over a period of time in the direction orthogonal to the incident laser beam which is kept at a constant intensity during the experiments. The emission spectra display the signature of laser action after a certain amount of polymerization. We have also recorded the intensity of fluorescence as well as of the amplified stimulated emission (ASE) using a photodiode. Our results confirmed that all the emission is guided by an increase of the refractive index resulting from the photopolymerization process. The spatial fluctuations in the density of the material are thought to act as micro-cavities leading to a random laser effect.

© 2005 Optical Society of America

OCIS Codes
(130.2790) Integrated optics : Guided waves
(140.2050) Lasers and laser optics : Dye lasers
(160.4890) Materials : Organic materials

ToC Category:
Research Papers

History
Original Manuscript: June 1, 2005
Revised Manuscript: June 22, 2005
Published: July 11, 2005

Citation
Stéphane Klein, Olivier Crégut, Denis Gindre, Alex Boeglin, and Kokou Dorkenoo, "Random laser action in organic film during the photopolymerization process," Opt. Express 13, 5387-5392 (2005)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-13-14-5387


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References

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