FEMTOSECOND INCOHERENT PHOTON-ECHO FROM RHODAMINE-B IN PROPYLENE-GLYCOL - INHOMOGENEOUS BROADENING AND SPECTRAL DIFFUSION AT ROOM-TEMPERATURE

被引：15

作者：

ZHANG, RH ^{[1
]}

YANG, TS ^{[1
]}

MYERS, AB ^{[1
]}

机构：

[1] UNIV ROCHESTER,DEPT CHEM,ROCHESTER,NY 14627

来源：

CHEMICAL PHYSICS LETTERS | 1993年 / 211卷 / 06期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0009-2614(93)80140-K

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Two-pulse degenerate four-wave mixing (photon-echo) experiments using ''incoherent'' light are reported for rhodamine B in propylene glycol and ethanol at 295 K. The signal detected in a particular direction is strongly asymmetric with respect to the time delay between the two pulses, implying that the electronic spectrum is inhomogeneously broadened on the time scale of the ''waiting time'' between interactions of the material system with the second and third electric fields. Similar experiments on nile blue yield a symmetric signal response characteristic of a homogeneously broadened system. The effective waiting times in experimental configurations employing parallel and perpendicularly polarized excitation pulses are discussed.

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页码：541 / 548

页数：8

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