Picosecond Nonlinear Optical Transmission Measurement on Anatase TiO2 Thin Films

A TiO2 optical thin ¯lm is fabricated by use of a sol-gel method. The structure of the TiO2 thin ¯lm is examined by using an X-ray diraction measurement, which shows that the gelation process at 500 ±C results in an anatase phase. A nonlinear optical transmission measurement is performed by pumping...

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Veröffentlicht in:Journal of the Korean Physical Society 2006, 49(3), , pp.938-942
Hauptverfasser: Min Jung Kim, 우정원, Bum Ku Rhee, 안일신, Ji Hoon Kwak(HANYANG, Jisoo Hwang, Seung Mook Lee
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Sprache:eng
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Zusammenfassung:A TiO2 optical thin ¯lm is fabricated by use of a sol-gel method. The structure of the TiO2 thin ¯lm is examined by using an X-ray diraction measurement, which shows that the gelation process at 500 ±C results in an anatase phase. A nonlinear optical transmission measurement is performed by pumping near the energy gap edge of the TiO2 thin ¯lm. The nonlinear optical responses of the d- and the sp-orbitals are found to be responsible for the large optical Kerr nonlinearity in the anatase TiO2 thin ¯lm. KCI Citation Count: 2
ISSN:0374-4884
1976-8524