ENHANCED REVERSE SATURABLE ABSORPTION AND OPTICAL LIMITING IN HEAVY-ATOM-SUBSTITUTED PHTHALOCYANINES

被引:394
作者
PERRY, JW [1 ]
MANSOUR, K [1 ]
MARDER, SR [1 ]
PERRY, KJ [1 ]
ALVAREZ, D [1 ]
CHOONG, I [1 ]
机构
[1] CALTECH,BECKMAN INST,PASADENA,CA 91125
关键词
D O I
10.1364/OL.19.000625
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
The reverse saturable absorption and the optical-limiting response of metal phthalocyanines can be enhanced by use of the heavy-atom effect. Phthalocyanines containing heavy-metal atoms, such as In, Sn, and Pb, show a nearly factor-of-2 enhancement in the ratio of effective excited-state to ground-state absorption cross sections compared with those containing lighter atoms, such as Al and Si. In an f/8 optical geometry, homogeneous solutions of heavy-metal phthalocyanines, at 30% linear transmission, limit 8-ns 532-nm laser pulses to less-than-or-equal-to 3 muJ (the energy for 50% probability of eye damage) for incident energies as high as 800 muJ.
引用
收藏
页码:625 / 627
页数:3
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