1 January 2010 Whispering gallery modes at 800 nm and 1550 nm in concentric Si-nc/Er:SiO2 microdisks
Author Affiliations +
J. of Nanophotonics, 4(1), 049501 (2010). doi:10.1117/1.3312634
Abstract
We examined a concentric Si nanocrystal (Si-nc) and Er doped SiO2 (Er:SiO2) microdisk structure supporting high-Q whispering gallery modes (WGMs) at both visible and telecom wavelengths. This structure provides a means to utilize Si-nc luminescence as an optical pump for an Er:SiO2 cavity without subjecting a telecom-wavelength, Er:SiO2-based mode to loss mechanisms associated with the Si-nc material. After fabricating a concentric microdisk consisting of an inner Si-nc disk and an outer Er:SiO2 ring, we characterize visible wavelength WGMs excited by the Si-nc photoluminescence and observed spectrometer limited quality factors as high as 103. Telecom wavelength photoluminescence from the Er:SiO2 ring was measured to have a quality factor as high as 104 in the erbium luminescence region using a passive pulled fiber setup.
Elton Marchena, Brandon Redding, Tim Creazzo, Shouyuan Shi, Dennis W. Prather, "Whispering gallery modes at 800 nm and 1550 nm in concentric Si-nc/Er:SiO2 microdisks," Journal of Nanophotonics 4(1), 049501 (1 January 2010). http://dx.doi.org/10.1117/1.3312634
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KEYWORDS
Silicon

Erbium

Luminescence

Spectroscopy

Nanocrystals

Scanning electron microscopy

Visible radiation

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