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Proceedings Paper

Controlling the optical properties of single molecules by optical confinement in a tunable microcavity
Author(s): Alexey Chizhik; Raphael Gutbrod; Anna Chizhik; Sebastian Baer; Alfred Meixner
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Paper Abstract

We present experimental results on changing the fluorescence spectrum of a single molecule by embedding it within a tunable optical microresonator with subwavelength spacing. The cavity length is reversibly changed across the entire visible range with nanometer precision by using a piezoelectric actuator. By varying its length, the local mode structure of the electromagnetic field is changed together with the radiative coupling of the emitting molecule to the field. Since mode structure and coupling are both frequency dependent, this leads to a renormalization of the emission spectrum of the molecule. Moreover, we use doughnut laser modes in the tunable microcavity to determine the longitudinal position of an isotropic emitter. By analyzing the excitation patterns resulting from the illumination of a single fluorescent bead in the focus of a radially polarized doughnut mode laser beam we can determine the longitudinal position of this bead in the microcavity with an accuracy of a few nanometers.

Paper Details

Date Published: 20 August 2009
PDF: 9 pages
Proc. SPIE 7396, Physical Chemistry of Interfaces and Nanomaterials VIII, 73960F (20 August 2009); doi: 10.1117/12.825278
Show Author Affiliations
Alexey Chizhik, Eberhard Karls Univ. Tübingen (Germany)
Raphael Gutbrod, Eberhard Karls Univ. Tübingen (Germany)
Anna Chizhik, Eberhard Karls Univ. Tübingen (Germany)
Sebastian Baer, Eberhard Karls Univ. Tübingen (Germany)
Alfred Meixner, Eberhard Karls Univ. Tübingen (Germany)

Published in SPIE Proceedings Vol. 7396:
Physical Chemistry of Interfaces and Nanomaterials VIII
Oliver L. A. Monti; Oleg V. Prezhdo, Editor(s)

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