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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 46, Iss. 21 — Jul. 20, 2007
  • pp: 4786–4792

Study of solvent effect in laser emission from Coumarin 540 dye solution

Ritty J. Nedumpara, Thomas K. J., Jayasree V. K., C. P. Girijavallabhan, V. P. N. Nampoori, and P. Radhakrishnan  »View Author Affiliations


Applied Optics, Vol. 46, Issue 21, pp. 4786-4792 (2007)
http://dx.doi.org/10.1364/AO.46.004786


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Abstract

The results of a brief investigation of the amplified spontaneous emission and lasing characteristics of Coumarin 540 dye in as many as ten different solvents are reported. It has been found that C 540 dye solutions contained within a rectangular quartz cuvette give laser emission with well resolved equally spaced modes when pumped with a 476 nm beam. The modes were found to originate from the subcavities formed by the plane-parallel walls of the cuvette containing the high-gain medium. While the quantum yield remains a decisive factor, a clear correlation between the total width of the emission spectra and the refractive indices of the solvents of the respective samples has been demonstrated. The well-resolved mode structure exhibited by the emission spectra gives clear evidence of the lasing action taking place in the gain medium, and the number of modes enables us to compare the gain of the media in different samples. A detailed discussion of the solvent effect in the lasing characteristics of C540 in different solutions is given.

© 2007 Optical Society of America

OCIS Codes
(140.2050) Lasers and laser optics : Dye lasers
(140.3380) Lasers and laser optics : Laser materials

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: November 27, 2006
Revised Manuscript: March 12, 2007
Manuscript Accepted: March 21, 2007
Published: July 6, 2007

Citation
Ritty J. Nedumpara, Thomas K. J., Jayasree V. K., C. P. Girijavallabhan, V. P. N. Nampoori, and P. Radhakrishnan, "Study of solvent effect in laser emission from Coumarin 540 dye solution," Appl. Opt. 46, 4786-4792 (2007)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-46-21-4786


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References

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