Research Papers

Modeling of light amplification and enhanced spontaneous emission in silicon nanocrystals

[+] Author Affiliations
Shouyuan Shi, Brandon Redding, Tim Creazzo, Elton Marchena, Dennis W. Prather

Department of Electrical and Computer Engineering, University of Delaware, 140 Evans Hall, Newark, DE 19716

J. Nanophoton. 3(1), 033503 (June 3, 2009). doi:10.1117/1.3158053
History: Received April 14, 2009; Revised May 28, 2009; Accepted May 29, 2009; June 3, 2009; Online June 03, 2009
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Abstract

Based on coupled quantum electrodynamics the light propagation in active silicon nanocrystals was reported in this paper. The classical electron oscillator model was employed to bridge the link between the rate equations of the four-level atomic system of the active medium and the electromagnetic interaction. With the assistance of auxiliary differential equations we numerically solved the system by using the Finite-difference Time-domain (FDTD) method. Both stimulated and spontaneous emissions were taken into account in the active medium system. Light amplification characteristics due to stimulated emission were investigated under various pumping rates. To enhance the spontaneous emission, microcavities based on one-dimensional photonic crystals were designed to maximize the nonlinear interaction between the active medium and electromagnetic waves. Preliminary experimental investigation of the cavity-enhanced luminescence was performed to demonstrate the validation of the proposed simulation scheme.

© 2009 Society of Photo-Optical Instrumentation Engineers

Citation

Shouyuan Shi ; Brandon Redding ; Tim Creazzo ; Elton Marchena and Dennis W. Prather
"Modeling of light amplification and enhanced spontaneous emission in silicon nanocrystals", J. Nanophoton. 3(1), 033503 (June 3, 2009). ; http://dx.doi.org/10.1117/1.3158053


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