Abstract
Silicate gels doped with organic dyes have been proposed as solid-state tunable lasers. Photobleaching of the dye under laser excitation is an important phenomenon in this application. The optical absorption and luminescence of SiO2 silica gels doped with Rhodamine B exposed to the second harmonic pulses of a YAG : Nd laser have been studied. In addition to the characteristic exponential decay with the number of pulses, overlapping oscillations in the intensity were observed. This behavior is explained in terms of a long lived metastable electronic excited state of the dye molecules.
Similar content being viewed by others
References
D.A. Gromov, K.M. Dyumaev, A.A. Manenkov, A.P. Maslyukov, G.A. Matyushin, V.S. Nechitailo, and A.M. Prokhorov, J. Opt. Soc. Am. 2, 1028 (1985).
G.B. Altshuler, V.A. Bakhanov, E.G. Dulneva, A.V. Erofeev, O.V. Mazurin, G.P. Roskova, and T.S. Tsekhomskaya, Opt. Spectroscopy (USSR) 62, 709 (1988).
A. Charlton, I.T. Mckinnie, M.A. Meneses-Nava, and T.A. King, J. Modern Opt. 39, 1517 (1992).
J.C. Altman, R.E. Stone, B. Dunn, and F. Nishida, IEEE Photonics Tech. Lett. 3, 189 (1991).
B. Dunn, F. Nishida, R. Toda, J.I. Zink, T.H. Allik, S. Chandra, and J.A. Hutchinson, Mat. Res. Soc. Symp. Proc. 329, 267 (1994).
J. Rickards, J. Garcia M., R. Garcia M., E. Ramirez, and K. Lopez, Nucl. Instr. and Meth. in Phys. Res. B 11413 (in press) (1977).
F.P. Schäfer, in Dye Lasers, edited by F.P. Schäfer (Spinger-Verlag, Berlin, 1973), p. 28.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Garcia, J., Ramirez, E., Mondragon, M. et al. Photodegradation of Luminescence in SiO2 : Rh B Gels Exposed to YAG : Nd Laser Pulses. Journal of Sol-Gel Science and Technology 13, 657–661 (1998). https://doi.org/10.1023/A:1008624201781
Issue Date:
DOI: https://doi.org/10.1023/A:1008624201781