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Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/69847
- Femtosecond fabrication of nonlinear photonic crystals
- Jia, Baohua; Gu, Min
- It has been demonstrated by many researchers that smooth void dots and void channels have been generated efficiently in polymers and glasses by use of a femtosecond laser induced microexplosion method. This method has been used to fabricate three-dimensional (3D) photonic crystals in those media. But the low refractive index media cannot open 3D complete bandgaps. Lithium niobate (LiNbO3 ) has a high refractive index of ~2.2 and a large transparent range of 0.45-5 µm which makes it a suitable candidate for near-infrared photonic crystal fabrication. As LiNbO3 has large nonlinear coefficients, photonic crystals made from it may have strong nonlinearity and therefore functionality. In this talk, I will report on our recent work on the fabrication of 3D photonic crystals in a bulk LiNbO3 crystal by using the femtosecond laser-induced microexplosion method. In particular, the effect of the anisotropy of LiNbO3 and the large refractive-index mismatch between LiNbO3 and its immersion medium on void generation will be discussed. The stop gaps of 3D photonic crystals consisting of a face-centred cubic lattice will be demonstrated.
- Publication type
- Conference paper
- Proceedings of the 3rd Pacific International Conference on Applications of Lasers and Optics (PICALO 2008), Beijing, China, 16-18 April 2008
- Publication year
- Bandgaps; Femtosecond laser; Lithium niobate; Photonic crystals
- Laser Institute of America
- Publisher URL
- Copyright © 2008.
- Peer reviewed