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Proceedings Paper

Optical-limiting effect of polydiacetylenes substituted with heterocyclic group
Author(s): Peiwang Zhu; Congxuan Yu; Jingyong Liu; Yinglin Song; Chunfei Li
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Paper Abstract

As a kind of nonlinear optical materials, polydiacetylenes (PDAs) have attracted great attention because of their large third-order susceptibilities, ultrafast responsibilities, and high damage threshold, etc. 5-(2-methylthio-4-methyl)- pyrimidinyl-2,4-pentadiyne-1-ol (PDAA) and its derivatives were synthesized. The optical limiting characteristics of these compounds were demonstrated with nanosecond and picosecond pulses at 532 nm. With linear transmittance as high as 87%, the limiting threshold and limited amplitude of PDATS(PDAA tosylate) were observed to be 200 mJ/cm2 and 150 mJ/cm2 respectively, which are lower than that of C60 with the same high transmittance for visible light. A five-level model describing reverse saturable absorption (RSA) of PDATS was proposed to explain its optical limiting effect. The excited-state absorption cross section and the excited-state lifetime were estimated to be 4.0 multiplied by 10-19 cm2 and 0.6 microseconds respectively.

Paper Details

Date Published: 3 October 1996
PDF: 6 pages
Proc. SPIE 2897, Electro-Optic and Second Harmonic Generation Materials, Devices, and Applications, (3 October 1996); doi: 10.1117/12.252986
Show Author Affiliations
Peiwang Zhu, Beijing Institute of Technology (China)
Congxuan Yu, Beijing Institute of Technology (China)
Jingyong Liu, Beijing Institute of Technology (China)
Yinglin Song, Harbin Institute of Technology (China)
Chunfei Li, Harbin Institute of Technology (China)

Published in SPIE Proceedings Vol. 2897:
Electro-Optic and Second Harmonic Generation Materials, Devices, and Applications
Manfred Eich; Bruce H. T. Chai; Minhua Jiang, Editor(s)

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