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Control of Single Molecule Fluorescence Dynamics by Stimulated Emission Depletion

Marsh, RJ; Osborne, MA; Bain, AJ; (2003) Control of Single Molecule Fluorescence Dynamics by Stimulated Emission Depletion. In: Andrews, DL and Gaburro, Z and Cartwright, AN and Lee, YCL, (eds.) Nanocrystals, and Organic and Hybrid Nanomaterials. Society of Photo-Optical Instrumentation Engineers (SPIE): San Diego, CA, USA. Green open access

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Abstract

The feasibility of manipulating the single molecule absorption-emission cycle using picosecond stimulated emission depletion (STED) is investigated using a stochastic computer simulation. In the simulation the molecule is subjected to repeated excitation and depletion events using time delayed pairs of excitation (PUMP) and depletion (DUMP) pulses derived from a high repetition rate pulsed laser system. The model is used to demonstrate that a significant and even substantial reduction in the occurrence of 'dark states' in the fluorescence emission can be achieved using stimulated emission depletion. Variation in the PUMP-DUMP window allows precise control of the fluorescence yield with substantial increases in the fluorescence intensity observed at early PUMP-DUMP delays.

Type: Proceedings paper
Title: Control of Single Molecule Fluorescence Dynamics by Stimulated Emission Depletion
Event: Nanocrystals, and Organic and Hybrid Nanomaterials
Open access status: An open access version is available from UCL Discovery
DOI: 10.1117/12.505861
Publisher version: http://dx.doi.org/10.1117/12.505861
Language: English
Additional information: Copyright © 2003 Society of Photo Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery.ucl.ac.uk/id/eprint/30741
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