OPTICAL LIMITING EFFECT IN TWO PHTHALOCYANINES OBSERVED BY PICOSECOND PULSED LASER
Qu Shi-liang (曲士良)a, Chen Yu (陈煜)b, Song Ying-lin (宋瑛林)a, Chen Guo-ping (陈国平)a, Wang Yu-xiao (王玉晓)a, Zhang Xue-ru (张学如)a, Liu Shu-tian (刘树田)a, Wang Duo-yuan (王夺元)b
a Department of Physics, Harbin Institute of Technology, Harbin 150001, China; b Center for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China
Abstract Optical limiting (OL) properties of two phthalocyanines were investigated by using picosecond laser pulses at 532nm. The relative ratios k of the absorption cross section of the first singlet excited state to that of the ground state were approximately obtained by the analysis of the experimental results in which the reverse saturable absorption model of the three-energy-level scheme was employed. A significant comparison with fullerene C60 was presented for OL. The OL mechanisms have been analysed in detail.
Received: 20 March 2001
Revised: 18 July 2001
Accepted manuscript online:
Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 292682001 and 29832030).
Cite this article:
Qu Shi-liang (曲士良), Chen Yu (陈煜), Song Ying-lin (宋瑛林), Chen Guo-ping (陈国平), Wang Yu-xiao (王玉晓), Zhang Xue-ru (张学如), Liu Shu-tian (刘树田), Wang Duo-yuan (王夺元) OPTICAL LIMITING EFFECT IN TWO PHTHALOCYANINES OBSERVED BY PICOSECOND PULSED LASER 2001 Chinese Physics 10 1139
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