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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 15, Iss. 2 — Feb. 1, 1998
  • pp: 789–801

Efficient two-photon-induced fluorescence in a new organic crystal

Germain Puccetti, Simon G. Bott, and Roger M. Leblanc  »View Author Affiliations


JOSA B, Vol. 15, Issue 2, pp. 789-801 (1998)
http://dx.doi.org/10.1364/JOSAB.15.000789


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Abstract

Results are presented on the two-photon absorption and fluorescence properties of a new molecular crystal based on (E)-(E)-4-(p-N, N-dimethylaniline)-1-cyano-1-di(ethoxy)phosphinoylbuta-1, 3-diene (DCP). This material shows a two-photon-induced fluorescence when excited in the infrared, in powder ~6 times that obtained from a [2-[2-[4-dimethylaminophenyl]ethenyl]-6-methyl-4H-pyron-4-ylidene]propanedinitrile powder excited at 1.064 μm, and ~50 times that of a 1-cm-long Rhodamine 640 solution (2 mM in methanol). Pulsed photoacoustic spectroscopy has been used to characterize the two-photon absorption band of the crystalline state. A high two-photon absorption coefficient, β = 15 cm/GW, is reported, and an energy-conversion yield of 2.0% (incoherent fluorescence) was obtained in a DCP monocrystal in a single-pass beam configuration. Finally, a correlation is shown between the polarization of the excitation radiation and the crystalline structure of the material.

© 1998 Optical Society of America

OCIS Codes
(110.5120) Imaging systems : Photoacoustic imaging
(260.2510) Physical optics : Fluorescence
(300.6280) Spectroscopy : Spectroscopy, fluorescence and luminescence

Citation
Germain Puccetti, Simon G. Bott, and Roger M. Leblanc, "Efficient two-photon-induced fluorescence in a new organic crystal," J. Opt. Soc. Am. B 15, 789-801 (1998)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-15-2-789

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