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The recoil due to the emission process.
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Areas:
Biophotonics
Group associations:
Optical tweezers
Abstract:
The conventional way to characterize fluorescence and Raman processes is through the analysis of a spectrum of light reflected from a scatterer. One can consider a different physical perspective where an inelastic scattering results in changes of the scattering field that exerts mechanical forces on the scatterer. We study, in particular, the recoil effect that is a result of the fluorescence Raman emission of molecules that are proximal to, or adsorbed on the surface of the probe. To increase the efficiency of the inelastic scattering processes we used partially metal covered scatters that enhance the emission through the localized surface plasmon resonances.
Collaborations:
- Physics Department, Moscow University, Russia
- ICFO Plasmon nano-optics group
People in this project:
Dmitri Petrov
Selected publications in this project:
Measurement of mechanical forces acting on optically trapped dielectric spheres induced by surface-enhanced raman scattering, S. Rao, S. Bálint, P. Løvhaugen, M. Kreuzer, D. Petrov, Phys. Rev. Lett. 102, 087401 (2009)
Detection of plasmon-enhanced luminiscence fields from an optically manipulated pair of partially metal covered dielectric spheres, A. Zhdanov, M. P. Kreuzer, S. Rao, A. Fedyanin, P. Ghenuche, R. Quidant, D. Petrov, Opt. Lett. 33, 2749-2751 (2008)
Nonlinear optical response from single spheres coated by a nonlinear monolayer, X. Vidal, A. Fedyanin, A. Molinos-Gómez, S. Rao, J. Martorell, D. Petrov, Opt. Lett. 33, 699-701 (2008)
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