FEMTOSECOND TIME-RESOLVED RESONANCE RAMAN GAIN SPECTROSCOPY IN POLYDIACETYLENE

被引：91

作者：

YOSHIZAWA, M

HATTORI, Y

KOBAYASHI, T

机构：

[1] UNIV TOKYO,FAC SCI,DEPT PHYS,BUNKYO KU,TOKYO 113,JAPAN

[2] SUMITOMO ELECT IND,NEW CHEM R&D LABS,KONOHANA KU,OSAKA 554,JAPAN

来源：

PHYSICAL REVIEW B | 1994年 / 49卷 / 18期

关键词：

D O I：

10.1103/PhysRevB.49.13259

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Geometrical relaxation of the main chain configuration in polydiacetylene (PDA) has been investigated with time-resolved resonance Raman gain spectroscopy with 300-fs resolution. The Raman signal due to a self-trapped exciton in PDA has been observed at 1200 cm-1. The observed Raman signals offer direct evidence of the structure of a self-trapped exciton being a butatrienelike structure after geometrical relaxation from the acetylenelike structure in the free exciton state.

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页码：13259 / 13262

页数：4

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