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Publication Detail
Control of single molecule fluorescence dynamics by stimulated emission depletion
  • Publication Type:
    Conference
  • Authors:
    Marsh RJ, Osborne MA, Bain AJ
  • Publication date:
    2003
  • Pagination:
    78, 86
  • Published proceedings:
    Proceedings of SPIE
  • Volume:
    5222
  • Editors:
    Andrews DL,Gaburro Z,Cartwright AN,Lee CYC
  • Status:
    Published
  • Name of conference:
    Nanocrystals, and Organic and Hybrid Nanomaterials
  • Conference start date:
    04/08/4003
  • Keywords:
    control, DEPLETION, dynamic, DYNAMICS, emission, Fluorescence, SINGLE
Abstract
San Diego, CA, USA Monday 04 August 2003 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.
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