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Proceedings Paper

High Q silica microbubble resonators
Author(s): D. Farnesi; A. Barucci; S. Berneschi; M. Brenci; F. Cosi; G. Nunzi Conti; S. Pelli; G. C. Righini; S. Soria
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Paper Abstract

Microbubble resonators (MBRs) combine the unique properties of whispering gallery mode resonators with the intrinsic capability of integrated microfluidics. Here an improved fabrication method of MBRs is presented, based on the heating of a slightly pressurized capillary by a rotating arc discharge. Rotation of the electrodes ensures an homogeneous distribution of the heat all over the capillary surface. The demonstrated MBRs have Q factors up to 107 at 773 nm. Microbubbles were filled with water and aqueous solutions of ethanol in order to test the refractive index sensing capabilities of such resonators, which also show a good temporal stability.

Paper Details

Date Published: 27 February 2012
PDF: 6 pages
Proc. SPIE 8264, Integrated Optics: Devices, Materials, and Technologies XVI, 826417 (27 February 2012); doi: 10.1117/12.910282
Show Author Affiliations
D. Farnesi, Istituto di Fisica Applicata Nello Carrara (Italy)
Univ. degli Studi di Firenze (Italy)
A. Barucci, Istituto di Fisica Applicata Nello Carrara (Italy)
S. Berneschi, Museo Storica della Fisica e Ctr. Studi e Ricerche Enrico Fermi (Italy)
Istituto di Fisica Applicata Nello Carrara (Italy)
M. Brenci, Istituto di Fisica Applicata Nello Carrara (Italy)
F. Cosi, Istituto di Fisica Applicata Nello Carrara (Italy)
G. Nunzi Conti, Istituto di Fisica Applicata Nello Carrara (Italy)
S. Pelli, Istituto di Fisica Applicata Nello Carrara (Italy)
G. C. Righini, Istituto di Fisica Applicata Nello Carrara (Italy)
S. Soria, Istituto di Fisica Applicata Nello Carrara (Italy)


Published in SPIE Proceedings Vol. 8264:
Integrated Optics: Devices, Materials, and Technologies XVI
Jean Emmanuel Broquin; Gualtiero Nunzi Conti, Editor(s)

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