OSA's Digital Library

Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 19, Iss. 12 — Dec. 2, 2002
  • pp: 2852–2862

Laser energy-pooling processes in an optically thick Cs vapor near a dissipative surface

Jean-Marie Gagné, Karine Le Bris, and Marie-Claude Gagné  »View Author Affiliations


JOSA B, Vol. 19, Issue 12, pp. 2852-2862 (2002)
http://dx.doi.org/10.1364/JOSAB.19.002852


View Full Text Article

Enhanced HTML    Acrobat PDF (342 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

We characterize, for the first time to our knowledge, the laser-induced backward fluorescence (retrofluorescence) spectra that result from energy-pooling collisions between Cs atoms near a dissipative thin Cs layer on a glass substrate. We resolve, experimentally and theoretically, the laser spectroscopic problem of energy-pooling processes related to the nature of the glass–metallic vapor interface. Our study focused on the integrated laser-induced retrofluorescence spectra for the 455.5-nm (72P3/262S1/2) and 852.2-nm (62P3/262S1/2) lines as a function of laser scanning through pumping resonance at the 852.2-nm line. We experimentally investigate the retrofluorescence from 420 to 930 nm, induced by a diode laser tuned either in the wings or in the center of the pumping resonance line. We present a detailed theoretical model of the retrofluorescence signal based on the radiative transfer equation, taking into account the evanescent wave of the excited atomic dipole strongly coupled with a dissipative surface. Based on theoretical and experimental results, we evaluate the effective nonradiative transfer rate A¯62P3/262S1/2sf for atoms in the excited 62P3/2 level located in the near-field region of the surface of the cell. Values extracted from the energy-pooling process analysis are equivalent to those found directly from the 852.2-nm resonance retrofluorescence line. We show that the effective energy-pooling coefficients k˜72P3/2 and k˜72P1/2 are approximately equal. The agreement between theory and experiment is remarkably good, considering the simplicity of the model.

© 2002 Optical Society of America

OCIS Codes
(020.2070) Atomic and molecular physics : Effects of collisions
(240.6490) Optics at surfaces : Spectroscopy, surface
(290.2200) Scattering : Extinction
(300.2530) Spectroscopy : Fluorescence, laser-induced
(300.6490) Spectroscopy : Spectroscopy, surface
(350.2450) Other areas of optics : Filters, absorption

Citation
Jean-Marie Gagné, Karine Le Bris, and Marie-Claude Gagné, "Laser energy-pooling processes in an optically thick Cs vapor near a dissipative surface," J. Opt. Soc. Am. B 19, 2852-2862 (2002)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-19-12-2852


Sort:  Author  |  Year  |  Journal  |  Reset  

References

  1. M. Chevrollier, M. Fichet, M. Oria, G. Rahmat, D. Bloch, and M. Ducloy, “High resolution selective reflection spectroscopy as a probe of long-range surface interaction: measurement of the surface van der Waals attraction exerted on excited Cs atoms,” J. Phys. (Paris) II 2, 631–657 (1992).
  2. K. Zhao, Z. Wu, and H. M. Lai, “Optical determination of alkali metal vapor number density in the vicinity (~10−5 cm) of cell surfaces,” J. Opt. Soc. Am. B 18, 1904–1910 (2001). [CrossRef]
  3. V. G. Bordo, J. Loerke, L. Jozefowski, and H.-G. Rubahn, “Two-photon laser spectroscopy of the gas boundary layer in crossed evanescent and volume waves,” Phys. Rev. A 64, 012903/1–11 (2001). [CrossRef]
  4. K. Le Bris, J.-M. Gagné, F. Babin, and M.-C. Gagné, “Characterization of the retrofluorescence inhibition at the interface between glass and optically thick Cs vapor,” J. Opt. Soc. Am. B 18, 1701–1710 (2001). [CrossRef]
  5. F. de Tomasi, S. Milosevic, P. Verkerk, A. Fioretti, M. Allegrini, Z. J. Jabbour, and J. Huennekens, “Experimental study of caesium 6PJ+6PJ→7PJ+6S energy pooling collisions and modelling of the excited atom density in the presence of optical pumping and radiation trapping,” J. Phys. B 30, 4991–5008 (1997). [CrossRef]
  6. R. R. Chance, A. Prock, and R. Silbey, “Comments on the classical theory of energy transfer,” J. Chem. Phys. 62, 2245–2253 (1975). [CrossRef]
  7. Z. J. Jabbour, R. K. Namiotka, J. Huennekens, M. Allegrini, S. Milosevic, and F. de Tomasi, “Energy-pooling collisions in cesium: 6PJ+6PJ→6S+(nl=7P,  6D,  8S, 4F),” Phys. Rev. A 54, 1372–1384 (1996). [CrossRef] [PubMed]
  8. J. B. Taylor and I. Langmuir, “Vapour pressure of Caesium by the positive ion method,” Phys. Rev. 51, 753–760 (1937). [CrossRef]
  9. L. Krause, “Sensitized fluorescence and quenching,” The Excited State in Chemical Physics, J. W. McGowan, ed. (Wiley, New York, 1975), pp. 267–316.
  10. M. Zinkin, MFIT version 0.3 (1997), http://www.ill.fr/tas/matlab/.

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.


« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited