Influence of surface passivation on the optical bleaching of CdSe microcrystallites embedded in glass

I. Rueckmann; Ulrike Woggon; J. Kornack; Matthias Mueller; J. Cesnulevicius; Jonas Kolenda; Mindaugas Petrauskas

doi:10.1117/12.46010

1 August 1991 Influence of surface passivation on the optical bleaching of CdSe microcrystallites embedded in glass

I. Rueckmann, Ulrike Woggon, J. Kornack, Matthias Mueller, J. Cesnulevicius, Jonas Kolenda, Mindaugas Petrauskas

Proceedings Volume 1513, Glasses for Optoelectronics II; (1991) https://doi.org/10.1117/12.46010
Event: ECO4 (The Hague '91), 1991, The Hague, Netherlands

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.

Citation Download Citation

I. Rueckmann, Ulrike Woggon, J. Kornack, Matthias Mueller, J. Cesnulevicius, Jonas Kolenda, and Mindaugas Petrauskas "Influence of surface passivation on the optical bleaching of CdSe microcrystallites embedded in glass", Proc. SPIE 1513, Glasses for Optoelectronics II, (1 August 1991); https://doi.org/10.1117/12.46010

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