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Whispering gallery modes at 800 nm and 1550 nm in concentric Si-nc/Er:SiO2 microdisks

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

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

J. Nanophoton. 4(1), 049501 (January 21, 2010). doi:10.1117/1.3312634
History: Received December 22, 2009; Revised January 15, 2010; Accepted January 18, 2010; January 21, 2010; Online January 21, 2010
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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.

© 2010 Society of Photo-Optical Instrumentation Engineers

Topics

Silica

Citation

Elton Marchena ; Brandon Redding ; Tim Creazzo ; Shouyuan Shi and Dennis W. Prather
"Whispering gallery modes at 800 nm and 1550 nm in concentric Si-nc/Er:SiO2 microdisks", J. Nanophoton. 4(1), 049501 (January 21, 2010). ; http://dx.doi.org/10.1117/1.3312634


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