Si nanocrystals in a distributed feedback laser cavity

We investigate an optically induced distributed-feedback cavity, containing a densely packed luminescent silicon nanocrystal layer in a Si O 2 based matrix as active medium. In the presence of optical feedback, we have observed a nonlinear increase in the spectrally resolved emission intensity on th...

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Bibliographic Details
Published in:Applied physics letters 2006-06, Vol.88 (25), p.251105-251105-3
Main Authors: Dohnalová, K., Pelant, I., Gilliot, P., Crégut, O., Hönerlage, B.
Format: Article
Language:English
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Summary:We investigate an optically induced distributed-feedback cavity, containing a densely packed luminescent silicon nanocrystal layer in a Si O 2 based matrix as active medium. In the presence of optical feedback, we have observed a nonlinear increase in the spectrally resolved emission intensity on the blue emission wing, which consists of two main contributions: (i) a broad amplified region around 550 nm , showing fast photoluminescence decay around 100 ns , depending on the excitation intensity, and (ii) a narrower peak located at about 580 nm . The latter exhibits a spectral shift, which varies with the cavity tuning.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.2216888