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Acta Physica Sinica (Overseas Edition), 1997, Vol. 6(7): 504-512    DOI: 10.1088/1004-423X/6/7/004
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PHOTO-INDUCED ENHANCEMENT OF THE THIRD-ORDER OPTICAL NONLINEARITY IN AZOBENZENE COMPOUND ON THE PICOSECOND TIME SCALE

WANG YOU-GUI (王友贵)a, SI JIN-HAI (司金海)a, YANG QI-GUANG (杨启光)a, YE PEI-XIAN (叶佩弦)a, QIU LING (邱玲)b, ZHANG JIA-XIN (张家新)b, ZHAI JIAN-FENG (翟剑峰)b, SHEN YU-QUAN (沈玉全)b
a Institute of Physics and Center for Condensed Matter Physics, Academia Sinica, Beijing 100080,China; b Institute of Photographic Chemistry, Academia Sinica, Beijing 100101,China
Abstract  Photo-induced enhancement processes of the third-order optical nonlinearity were observed in azobenzene solution under a 3Ops pulse pumping at 532 nm. Weinvestigated the time evolotion of the enhancement and found that it was mainly due to thc population of the first excited stale. By theoretical simulation of the enhancement processes, the values of the hyperpolarizabilities of the sample-molecules at ground state and at excited state, $\gamma$g and $\gamma$s1 were determined to be 1.11×10-33 esu and 7.40×10-33, respectively.
Received:  28 January 1997      Accepted manuscript online: 
PACS:  42.65.An (Optical susceptibility, hyperpolarizability)  
  78.20.Jq (Electro-optical effects)  
  42.65.Hw (Phase conjugation; photorefractive and Kerr effects)  
  82.30.Qt (Isomerization and rearrangement)  
Fund: Project supported by the National Natural Science Foundation of China.

Cite this article: 

WANG YOU-GUI (王友贵), SI JIN-HAI (司金海), YANG QI-GUANG (杨启光), YE PEI-XIAN (叶佩弦), QIU LING (邱玲), ZHANG JIA-XIN (张家新), ZHAI JIAN-FENG (翟剑峰), SHEN YU-QUAN (沈玉全) PHOTO-INDUCED ENHANCEMENT OF THE THIRD-ORDER OPTICAL NONLINEARITY IN AZOBENZENE COMPOUND ON THE PICOSECOND TIME SCALE 1997 Acta Physica Sinica (Overseas Edition) 6 504

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