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Nonlinear optical response of 1-D photonic crystals fabricated by using a sol-gel method
- Authors
- Hwang, J.; Kim, M.J.; Wu, J.W.; Lee, S.M.; Rhee, B.K.; Kwak, J.H.; An, I.
- Issue Date
- Nov-2006
- Keywords
- Kerr; Nonlinear; Optical switching; Optical transmission; Photonic crystal; Pump probe; SiO2; Sol-gel; TiO2
- Citation
- Journal of the Korean Physical Society, v.49, no.5 I, pp.2128 - 2131
- Indexed
- SCOPUS
KCI
- Journal Title
- Journal of the Korean Physical Society
- Volume
- 49
- Number
- 5 I
- Start Page
- 2128
- End Page
- 2131
- ISSN
- 0374-4884
- Abstract
- The picosecond nonlinear optical response in five-bilayered SiO 2/TiO2 structures of one-dimensional photonic crystals fabricated by using a sol-gel method is reported. We observe nonlinear optical changes in the transmission at both bandgap edges, an 8 % decrease at the high-energy edge, and a 4.5 % increase at the low-energy edge. These changes correspond to a blue shift of the bandgap. The observed reponse originates from the optical nonlinearity of the TiO2 layer.
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