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|Title:||Two-directional lasing from a dye-doped two-dimensional hexagonal photonic crystal made of holographic polymer-dispersed liquid crystals||Authors:||Luo, D.
|Issue Date:||2009||Citation:||Luo, D., Sun, X.W., Dai, H.T., Liu, Y.J., Yang, H.Z., Ji, W. (2009). Two-directional lasing from a dye-doped two-dimensional hexagonal photonic crystal made of holographic polymer-dispersed liquid crystals. Applied Physics Letters 95 (15) : -. ScholarBank@NUS Repository. https://doi.org/10.1063/1.3251078||Abstract:||Lasing actions are demonstrated in two high-symmetry directions (M and K) of a two-dimensional hexagonal photonic crystal from dye-doped holographic polymer-dispersed liquid crystals. The group velocity anomaly, which is peculiar to two-dimensional and three-dimensional photonic crystals, leads to substantial enhancement in local fields in the two-dimensional photonic crystal with a low-index contrast. The difference on the lasing thresholds between the two directions is interpreted as the result of different group velocities of the flat bands where laser oscillation occurred. © 2009 American Institute of Physics.||Source Title:||Applied Physics Letters||URI:||http://scholarbank.nus.edu.sg/handle/10635/98479||ISSN:||00036951||DOI:||10.1063/1.3251078|
|Appears in Collections:||Staff Publications|
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