Optical Microspherical Resonators for Biomedical Sensing
| Autor: | Massimo Brenci, Giancarlo C. Righini, Stefano Pelli, Simone Berneschi, Franco Cosi, Silvia Soria, Gualtiero Nunzi Conti |
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| Jazyk: | angličtina |
| Rok vydání: | 2011 |
| Předmět: |
Engineering
Material Absorption Physics::Optics Dielectric Review lcsh:Chemical technology Biochemistry Analytical Chemistry law.invention Resonator Quality (physics) Optics law lcsh:TP1-1185 Electrical and Electronic Engineering whispering gallery modes Instrumentation Coupling biomedical sensors business.industry optical resonators Laser Atomic and Molecular Physics and Optics microspheres Reflection (physics) Whispering-gallery wave business |
| Zdroj: | Sensors (Basel, Switzerland) Sensors, Vol 11, Iss 1, Pp 785-805 (2011) Sensors (Basel) 11 (2011): 785–805. info:cnr-pdr/source/autori:S. Soria, S. Berneschi, M. Brenci, F. Cosi, G. Nunzi Conti, S. Pelli, G.C. Righini/titolo:Optical Microspherical Resonators for Biomedical Sensing./doi:/rivista:Sensors (Basel)/anno:2011/pagina_da:785/pagina_a:805/intervallo_pagine:785–805/volume:11 |
| ISSN: | 1424-8220 |
| Popis: | Optical resonators play an ubiquitous role in modern optics. A particular class of optical resonators is constituted by spherical dielectric structures, where optical rays are total internal reflected. Due to minimal reflection losses and to potentially very low material absorption, these guided modes, known as whispering gallery modes, can confer the resonator an exceptionally high quality factor Q, leading to high energy density, narrow resonant-wavelength lines and a lengthy cavity ringdown. These attractive characteristics make these miniaturized optical resonators especially suited as laser cavities and resonant filters, but also as very sensitive sensors. First, a brief analysis is presented of the characteristics of microspherical resonators, of their fabrication methods, and of the light coupling techniques. Then, we attempt to overview some of the recent advances in the development of microspherical biosensors, underlining a number of important applications in the biomedical field. |
| Databáze: | OpenAIRE |
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