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Chin. Opt. Lett.
 Home  List of Issues    Issue 06 , Vol. 04 , 2006    Ultrafast nonlinear optical response of Ag:BaTiO3 composite films at the near-ultraviolet wavelengths


Ultrafast nonlinear optical response of Ag:BaTiO3 composite films at the near-ultraviolet wavelengths
Dongyi Guan, Zhenghao Chen, Kuijuan Jin, Guozhen Yang
Beijing National Laboratory for Condensed Matter Physics, [Institute of Physics, Chinese Academy of Science], Beijing 100080

Chin. Opt. Lett., 2006, 04(06): pp.370-372-3

DOI:
Topic:Ultrafast optics
Keywords(OCIS Code): 320.7110  190.4400  160.3900  

Abstract
The ultrafast nonlinear optical response of Ag:BaTiO3 composite films synthesized by pulse laser deposition (PLD) is studied at the near-ultraviolet (400 nm) wavelength. The pulse duration of the laser used in the measurement is 200 fs. The real and imaginary parts of the third-order nonlinear susceptibility 'chi'(3) of the composite materials are measured. The composite films indicate self-focusing effect and nonlinear saturation, the values of Re'chi'(3) and Im'chi'(3) are measured to be 3.42*10^(-10) and -1.37*10^(-10) esu respectively, which are much lower than those reported before. It is mainly because that the duration of the laser used in the measurements is too short to induce the hot electron excitation and the thermal effect. The ultrafast nonlinear saturated absorption response of the Ag:BaTiO3 composite films may have potential applications for femtosecond laser mode locking.

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Received:2006/2/27
Accepted:
Posted online:

Get Citation: Dongyi Guan, Zhenghao Chen, Kuijuan Jin, Guozhen Yang, "Ultrafast nonlinear optical response of Ag:BaTiO3 composite films at the near-ultraviolet wavelengths," Chin. Opt. Lett. 04(06), 370-372-3(2006)

Note: This work was supported by the National Natural Science Foundation of China under Grant No. 10276037. G. Yang is the author to whom the correspondence should be addressed, his e-mail address is yanggz@aphy.iphy.ac.cn.



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