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Proceedings Paper

Nanoscale imaging by micro-cavity scanning microscopy
Author(s): Andrea Di Donato; Gianluca Ippoliti; Tullio Rozzi; Davide Mencarelli; Giuseppe Orlando; Marco Farina
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Paper Abstract

In this work we describe a novel kind of scanning probe microscope carried out through an optical fiber extrinsic microcavity. The micro-cavity is realized by approaching a single mode fiber to a sample placed on a piezo-scanner. The distal end of the fiber and the sample realize the optical resonator. The probe is fed by a low-coherence source and the reflected intensity is acquired by an optical spectrum analyzer. The resonant behavior of the cavity enables to overcome the conventional Rayleigh limit. For this system the transverse resolution is not defined by the NA of fiber but it is a function of the transverse electromagnetic field inside the micro-cavity. The lens-free system paves the way towards quantitative measurements in air and liquid environment.

Paper Details

Date Published: 16 September 2014
PDF: 7 pages
Proc. SPIE 9236, Scanning Microscopies 2014, 923613 (16 September 2014); doi: 10.1117/12.2068584
Show Author Affiliations
Andrea Di Donato, Univ. Politecnica delle Marche (Italy)
Gianluca Ippoliti, Univ. Politecnica delle Marche (Italy)
Tullio Rozzi, Univ. Politecnica delle Marche (Italy)
Davide Mencarelli, Univ Politecnica delle Marche (Italy)
Giuseppe Orlando, Univ. Politecnica delle Marche (Italy)
Marco Farina, Univ. Politecnica delle Marche (Italy)


Published in SPIE Proceedings Vol. 9236:
Scanning Microscopies 2014
Michael T. Postek; Dale E. Newbury; S. Frank Platek; Tim K. Maugel, Editor(s)

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