Induced absorption in fullerene-doped solid xerogel matrices

被引：5

作者：

Schell, J

Ohlmann, D

Honerlage, B

Levy, R

Joucla, M

Rehspringer, JL

Serughetti, J

Bovier, C

机构：

[1] ULP, Inst Phys & Chim Mat Strasbourg, CNRS, UMR 7504,ECPM, F-67037 Strasbourg, France

[2] Univ Lyon 1, Dept Phys Mat, UMR 5586, F-69622 Villeurbanne, France

来源：

CARBON | 1998年 / 36卷 / 5-6期

关键词：

fullerene; optical properties;

D O I：

10.1016/S0008-6223(98)00061-X

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：

In this paper measurements of induced absorption and its dynamics in C-60-doped solid xerogel matrices are presented. The measurements are performed in a pump-test geometry using picosecond pulses generated from a frequency doubled modelocked Nd:YAG laser. An induced absorption leading to optical limiting was observed. Outstanding optical limiting qualities for single shot excitation were found. Furthermore, limiting dynamics are studied. A decrease of the initial laser-induced absorption with a time constant of 150 picoseconds was observed. This is attributed to a transition from excited singlet to tripler electronic states in the C-60 molecule. A long-living component due to the resulting triplet state population was also observed. (C) 1998 Elsevier Science Ltd. All rights reserved.

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收藏

页码：671 / 674

页数：4

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