Spectral narrowing in coherent Rayleigh-Brillouin scattering

A. Manteghi, N.J. Dam, A.S. Meijer, A.S. Wijn, de, W. Water, van de

Research output: Contribution to journalArticleAcademicpeer-review

9 Citations (Scopus)
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Abstract

Coherent Rayleigh-Brillouin scattering is a four-wave mixing technique that provides information on various physical properties of the scattering medium in the spectral domain. Being based on density gratings generated by dipole forces, the method requires two pump beams of sufficient spectral width to span the full response bandwidth of the scattering medium. We provide experimental data on the scattered spectrum as a function of the coherence between the two pump beams and derive the corresponding pump beam spectrum. We argue that all experiments on coherent Rayleigh-Brillouin scattering to date, have, in fact, been performed in the incoherent regime and show that orders of magnitude in scattering efficiency are to be expected when the experiments are performed with bandwidth-limited picosecond laser pulses.
Original languageEnglish
Article number173903
Pages (from-to)173903-1/4
Number of pages4
JournalPhysical Review Letters
Volume107
Issue number17
DOIs
Publication statusPublished - 2011

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