Open AccessConfocal reflectance microscopy for determination of microbubble resonator thickness
Author(s) -
Alessandro Cosci,
Franco Quercioli,
Daniele Farnesi,
Simone Berneschi,
Ambra Giannetti,
Franco Cosi,
Andrea Barucci,
G. Nunzi Conti,
Giancarlo C. Righini,
S. Pelli
Publication year - 2015
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.23.016693
Subject(s) - materials science , resonator , optics , confocal , microscopy , confocal microscopy , microscope , reflectivity , optical microscope , penetration depth , optoelectronics , scanning electron microscope , physics , composite material
Optical Micro Bubble Resonators (OMBR) are emerging as new type of sensors characterized by high Q-factor and embedded micro-fluidic. Sensitivity is related to cavity field penetration and, therefore, to the resonator thickness. At the state of the art, methods for OMBR's wall thickness evaluation rely only on a theoretical approach. The purpose of this study is to create a non-destructive method for measuring the shell thickness of a microbubble using reflectance confocal microscopy. The method was validated through measurements on etched capillaries with different thickness and finally it was applied on microbubble resonators.