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Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/203563
- Generation of lambda/12 nanowires in chalcogenide glasses
- Nicoletti, Elisa; Bulla, Douglas; Luther-Davies, Barry; Gu, Min
- Nanowires have been widely studied and have gained a lot of interest in the past decade. Because of their high refractive index and high nonlinearity, chalcogenide glasses (ChGs) are a good candidate for the fabrication of photonic nanowires as such nanowaveguides provide the maximal confinement of light, enabling large enhancement of nonlinear interactions and group-velocity dispersion engineering. Here we report on the generation of λ/12 (68 nm) nanowires based on the theoretical and experimental study of the influence of the laser repetition rate on the direct laser fabrication in ChGs (λ = 800 nm). Through a numerical model of cumulative heating, the optimum conditions for high-resolution fabrication in As2S3 are found. Nanowires with dimensions down to λ/12 are for the first time successfully fabricated in ChGs. We show that the generated nanowires can be stacked to form a three-dimensional woodpile photonic crystal with a pronounced stop gap.
- Publication type
- Journal article
- Research centre
- Swinburne University of Technology. Faculty of Engineering and Industrial Sciences. Centre for Micro-Photonics
- Nano Letters, Vol. 11, no. 10 (Oct 2011), pp. 4218-4221
- Publication year
- American Chemical Society
- Publisher URL
- Copyright © 2011 American Chemical Society.