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Chinese Physics, 2005, Vol. 14(3): 551-555    DOI: 10.1088/1009-1963/14/3/022
CLASSICAL AREAS OF PHENOMENOLOGY Prev   Next  

Structure dependence of ultrafast third-order optical nonlinearity for Ge—Ga—Cd sulfide glasses

Wang Zhen-Wei (王振伟)a, Wang Xue-Feng (王学锋)b, Liu Chun-Ling (刘春玲)a, Zhao Xiu-Jian (赵修建)b, Xiang Hong (向红)aYu Jia-Guo (余家国)c, Gong Qi-Huang (龚旗煌)a, Gu Shao-Xuan (顾少轩)b
a Department of Physics & State Key Laboratory for Mesoscopic Physics, Peking University, Beijing 100871, China; b Key Laboratory for Silicate Materials Science and Engineering (Wuhan University of Technology), Ministry of Education, Wuhan 430070, China; c State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
Abstract  Ultrafast third-order nonlinear optical responses of GeS2—Ga2S3—CdS glasses have been measured by using femtosecond time-resolved optical Kerr effect (OKE) technique at the wavelengths of 820nm and 640nm respectively. The experimental results show that GeS2—Ga2S3—CdS glasses have large femtosecond third-order optical nonlinear responses and their OKE signals vary considerably with the composition. The relationship of structure-property is discussed by means of Raman spectroscopy analysis, suggesting that the tetrahedron unit [GeS4] or [GaS4] plays an important role in the ultrafast third-order nonlinear optical response. In addition, the experimental results also reveal that the ultrafast third-order optical nonlinearity of these glasses does not obey the Miller rule.
Keywords:  third-order optical nonlinearity      ultrafast spectroscopy      chalcogenide glasses  
Received:  31 May 2004      Revised:  16 November 2004      Accepted manuscript online: 
PACS:  42.65.Re (Ultrafast processes; optical pulse generation and pulse compression)  
  42.65.Hw (Phase conjugation; photorefractive and Kerr effects)  
  42.70.Ce (Glasses, quartz)  
  78.30.Ly (Disordered solids)  
Fund: Project supported by the National Natural Science Foundation of China (Grant Nos 10204003, 90101027, 90206003 and 50125205), the National Key Basic Research Special Foundation of China (Grant No TG1999075207) and by Chinese Academy of Sciences, and the Ni

Cite this article: 

Wang Zhen-Wei (王振伟), Wang Xue-Feng (王学锋), Liu Chun-Ling (刘春玲), Zhao Xiu-Jian (赵修建), Xiang Hong (向红), Yu Jia-Guo (余家国), Gong Qi-Huang (龚旗煌), Gu Shao-Xuan (顾少轩) Structure dependence of ultrafast third-order optical nonlinearity for Ge—Ga—Cd sulfide glasses 2005 Chinese Physics 14 551

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