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Proceedings Paper

Influence of surface passivation on the optical bleaching of CdSe microcrystallites embedded in glass
Author(s): I. Rueckmann; Ulrike Woggon; J. Kornack; Matthias Mueller; J. Cesnulevicius; Jonas Kolenda; Mindaugas Petrauskas
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Paper Abstract

The authors report on optical investigation of CdSe-microcrystallites (MCs) embedded in glass and grown diffusion controlled to create MCs near the stage of nucleation having small radii (approximately equals 1.6 nm) and a symmetric size distribution. Room temperature measurements of (i) absorption bleaching and its kinetics at resonant MC-excitation using frequency doubled single ps-pulses from YAG-laser, and (ii) spectral hole burning at different delays in the ps-time scale, before and after a surface passivation of the samples by hydrogenation to remove MC- glass interface states responsible for the carrier transfer into the matrix, have been performed. After passivation, higher bleaching values, a slower recovery, and a blue shift of the DTS signal are obtained. A kinetic model including three levels and a fast carrier capture into the glass matrix is discussed to explain the observed nonlinear optical behavior.

Paper Details

Date Published: 1 August 1991
PDF: 8 pages
Proc. SPIE 1513, Glasses for Optoelectronics II, (1 August 1991); doi: 10.1117/12.46010
Show Author Affiliations
I. Rueckmann, Humboldt-Univ. Berlin (Germany)
Ulrike Woggon, Humboldt-Univ. Berlin (Germany)
J. Kornack, Humboldt-Univ. Berlin (Germany)
Matthias Mueller, Friedrich-Schiller-Univ. Jena (Germany)
J. Cesnulevicius, Vilnius Univ. (Lithuania)
Jonas Kolenda, Vilnius Univ. (Lithuania)
Mindaugas Petrauskas, Vilnius Univ. (Lithuania)

Published in SPIE Proceedings Vol. 1513:
Glasses for Optoelectronics II
Giancarlo C. Righini, Editor(s)

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