Physics of Wave Phenomena

Investigation of relaxation in quantum dot ensembles in thin semiconductor films by photon-echo technique

I. I. Popov, Н. С. Вашурин, Путилин Сергей Эдуардович, S. A. Stepanov, Николай Иванович Сушенцов

Published Apr 1, 2015• 3 citations

Abstract

Experimental results of observations of a femtosecond photon echo excited in an ensemble of quantum nanometer-sized objects in thin semiconductor (ZnO, SiB, SiP) films at room temperature are presented. The observed properties of the photon echo are discussed. Recorded relaxation times of exciton quantum transitions and beats at the photon echo decay as a function of the increasing interval between the exciting pulses reveal the role played by the defects of the thin film in the formation of its exciton structure of quantum transitions investigated using angular optical echo spectroscopy.

DOI: 10.3103/s1541308x1502003x

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