Multiphoton excitation and emission from europium ions in aqueous solution

1 October 1978

journal article
Published by Optica Publishing Group in Optics Letters

Vol. 3 (4) , 149-151
https://doi.org/10.1364/ol.3.000149

Abstract

Simultaneous emission induced by one- and two-photon absorption from the charge-transfer band from aqueous solutions of europium perchlorate pumped by a repetitively pulsed nitrogen laser have been detected. These processes were verified both through the measured fluorescence intensity as a function of the laser flux and from a qualitative analysis of the two overlapping characteristic broad emission spectra, which are dependent on the excitation wavelength. A theoretical fit could be made to the laser-power-dependence data, which gave a two-photon absorption coefficient of approximately 4 x 10(-49) cm(4) sec/photon-molecule for this system.

Keywords

This publication has 2 references indexed in Scilit:

Fluorescence and photochemistry of the charge-transfer band in aqueous europium(III) solutions
The Journal of Physical Chemistry, 1970
Laser and Two-Photon Processes
Physical Review B, 1962