CUED Publications database

Room-temperature emission at telecom wavelengths from silicon photonic crystal nanocavities

Lo Savio, R and Portalupi, SL and Gerace, D and Shakoor, A and Krauss, TF and O'Faolain, L and Andreani, LC and Galli, M (2011) Room-temperature emission at telecom wavelengths from silicon photonic crystal nanocavities. Applied Physics Letters, 98. ISSN 0003-6951

Full text not available from this repository.

Abstract

Strongly enhanced light emission at wavelengths between 1.3 and 1.6 μm is reported at room temperature in silicon photonic crystal (PhC) nanocavities with optimized out-coupling efficiency. Sharp peaks corresponding to the resonant modes of PhC nanocavities dominate the broad sub-bandgap emission from optically active defects in the crystalline Si membrane. We measure a 300-fold enhancement of the emission from the PhC nanocavity due to a combination of far-field enhancement and the Purcell effect. The cavity enhanced emission has a very weak temperature dependence, namely less than a factor of 2 reduction between 10 K and room temperature, which makes this approach suitable for the realization of efficient light sources as well as providing a quick and easy tool for the broadband optical characterization of silicon-on-insulator nanostructures. © 2011 American Institute of Physics.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div B > Photonics
Depositing User: Cron Job
Date Deposited: 07 Mar 2014 11:27
Last Modified: 08 Dec 2014 02:22
DOI: 10.1063/1.3591174