Spectral narrowing in coherent Rayleigh-Brillouin scattering.
Spectral narrowing in coherent Rayleigh-Brillouin scattering.
复制标题
相干瑞利-布里渊散射中的光谱变窄。
DOI：
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发表时间：
2011
影响因子：
8.6
通讯作者：
V. D. Water
中科院分区：
文献类型：
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作者：
A. Manteghi;N. Dam;A. Meijer;de As Wijn;V. D. Water
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.
