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Proceedings Paper

Electrostrictive in-situ nanoparticle detection with coherent Rayleigh-Brillouin scattering (Conference Presentation)
Author(s): Alexandros Gerakis; Mikhail N. Shneider; Yevgeny Raitses; Brentley C. Stratton

Paper Abstract

We report on the development and application of coherent Rayleigh-Brillouin scattering for the in situ detection of large molecules and nanoparticles. This four wave mixing diagnostic technique relies on the creation of an electrostrictive optical lattice in a medium due to the interaction between polarized particles and the intense electric field gradient created by the optical interference of two intense pulsed laser beams. Though this interaction, we can detect the temperature, pressure, relative density, polarizability and speed of sound of a gas and gas mixture. This diagnostic was already successfully demonstrated in atomic and molecular gaseous environments, where the different gas polarizabilities and pressures were successfully measured. We are currently conducting in situ measurements with large molecules and nanoparticles produced in an arc discharge, the results of which will be presented in this meeting.

Paper Details

Date Published: 25 September 2017
Proc. SPIE 10347, Optical Trapping and Optical Micromanipulation XIV, 103470J (25 September 2017); doi: 10.1117/12.2276439
Show Author Affiliations
Alexandros Gerakis, Princeton Plasma Physics Lab. (United States)
Mikhail N. Shneider, Princeton Univ. (United States)
Yevgeny Raitses, Princeton Plasma Physics Lab. (United States)
Brentley C. Stratton, Princeton Plasma Physics Lab. (United States)

Published in SPIE Proceedings Vol. 10347:
Optical Trapping and Optical Micromanipulation XIV
Kishan Dholakia; Gabriel C. Spalding, Editor(s)

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