Non-resonant third-order non-linear optical properties of amorphous GeSe2 film

The real and imaginary parts of third-order susceptibility of amorphous GeSe2 film were measured by the method of the femtosecond optical heterodyne detection of optical Kerr effect at 805nm with the 80fs ultra fast pulses. The results indicated that the values of real and imaginary parts were 8DDT8...

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Bibliographic Details
Published in:Journal of non-crystalline solids 2005-10, Vol.351 (37-39), p.3147-3151
Main Authors: Liu, Qiming, Lu, Bing, Zhao, XiuJian, Gan, Fuxi, Mi, Jun, Qian, Shixiong
Format: Article
Language:English
Subjects:
Amorphous semiconductors
glasses
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation
Optical properties of specific thin films
Physics
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Summary:The real and imaginary parts of third-order susceptibility of amorphous GeSe2 film were measured by the method of the femtosecond optical heterodyne detection of optical Kerr effect at 805nm with the 80fs ultra fast pulses. The results indicated that the values of real and imaginary parts were 8DDT8x10-12esu and -3DDT0x10-12esu, respectively. An amorphous GeSe2 film also showed a very fast response within 200fs. The ultra fast response and large third-order non-linearity are attributed to the ultra fast distortion of the electron orbits surrounding the average positions of the nucleus of Ge and Se atoms.
ISSN:0022-3093
1873-4812
DOI:10.1016/j.jnoncrysol.2005.07.014