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Picosecond nonlinear optical transmission measurement on anatase TiO2 thin films
- Authors
- Kim, Min Jung; Hwang, Jisoo; Wu, Jeong Weon; Lee, Seung Mook; Rhee, Bum Ku; Kwak, Ji Hoon; An, Ilsin
- Issue Date
- Sep-2006
- Publisher
- 한국물리학회
- Keywords
- titanium; anatase; sol-gel; nonlinear; optical transmission; pump probe
- Citation
- Journal of the Korean Physical Society, v.49, no.3, pp 938 - 942
- Pages
- 5
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- Journal of the Korean Physical Society
- Volume
- 49
- Number
- 3
- Start Page
- 938
- End Page
- 942
- ISSN
- 0374-4884
1976-8524
- Abstract
- A TiO2 optical thin film is fabricated by use of a sol-gel method. The structure of the TiO2 thin film is examined by using an X-ray diffraction measurement, which shows that the gelation process at 500 degrees C results in an anatase phase. A nonlinear optical transmission measurement is performed by pumping near the energy gap edge of the TiO2 thin film. 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 film.
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