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

页码：511 / 515

页数：5

共 15 条

[1]

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[2]

Davydov A. S., 1971, THEORY MOL EXCITONS

[3] DEPHASING-INDUCED DAMPING OF SUPERRADIANT EMISSION IN J-AGGREGATES [J].