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

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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
Divisions: Div B > Photonics
Depositing User: Cron Job
Date Deposited: 18 May 2016 18:07
Last Modified: 30 Jul 2016 05:34
DOI: 10.1063/1.3591174