Two-photon absorption spectrum of 3-butoxycarbonylmethylurethane polydiacetylene thin films

被引:20
作者
Banfi, G
Fortusini, D
Dainesi, P
Grando, D
Sottini, S
机构
[1] Univ Pavia, Ist Nazl Fis Mat, I-27100 Pavia, Italy
[2] Univ Pavia, Dipartimento Elettron, I-27100 Pavia, Italy
[3] Ist Ric Onde Elettromagnet, I-50125 Florence, Italy
关键词
D O I
10.1063/1.475832
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 report the two-photon absorption (TPA) spectrum of a film of poly[4,6-dacadiyne-1,10-diolbis(3-butoxycarbonyl-methyl-urethae)] -commonly known as poly(3-BCMU)-in the wavelength range lambda=1.6-0.7 mu m. We find that the TPA coefficient of the film, which was prepared by spin coating, increases from approximate to 2 cm/GW at 1.45 mu m to 170 cm/GW at 0.8 mu m. The main features of the spectrum can be accounted for by a three-level model with a two-photon state positioned at 2.8 eV. (C) 1998 American Institute of Physics. [S0021-9606(98)51110-5].
引用
收藏
页码:4319 / 4323
页数:5
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