PUMP-PROBE SPECTROSCOPY AND EXCITON DYNAMICS OF J-AGGREGATES AT HIGH PUMP INTENSITIES

被引：65
|
作者：
JOHNSON, AE [1 ]
KUMAZAKI, S [1 ]
YOSHIHARA, K [1 ]
机构：
[1] INST MOLEC SCI,OKAZAKI,AICHI 444,JAPAN
来源：
CHEMICAL PHYSICS LETTERS | 1993年 / 211卷 / 06期
关键词：
D O I：
10.1016/0009-2614(93)80135-C
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：
We have measured the picosecond pump-probe spectra of BIC J aggregates using a spectral continuum for the probe. The excitation pulses were intense (10(15)-2 X 10(16) photons/cm2) and created many excitons per aggregate. The observed dynamics are intensity dependent and reflect exciton-exciton annihilation processes. In addition, the zero-time spectrum is also intensity dependent, probably due to a reduction of k space at high exciton concentrations.
引用
收藏
页码：511 / 515
页数：5
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