Use of ultrafast-laser-driven microexplosion for fabricating three-dimensional void-based diamond-lattice photonic crystals in a solid polymer material
Optics Letters, Vol. 29, Issue 19, pp. 2240-2242 doi:10.1364/OL.29.002240
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- OCIS Codes:
- (140.7090) Lasers and laser optics : Ultrafast lasers
- (160.4760) Materials : Optical properties
- (160.5470) Materials : Polymers
- (220.4000) Optical design and fabrication : Microstructure fabrication
- (300.6340) Spectroscopy : Spectroscopy, infrared
Citation
Guangyong Zhou, Michael James Ventura, Michael Ross Vanner, and Min Gu, "Use of ultrafast-laser-driven microexplosion for fabricating
three-dimensional void-based diamond-lattice photonic crystals
in a solid polymer material," Opt. Lett. 29, 2240-2242 (2004)
http://www.opticsinfobase.org/abstract.cfm?URI=ol-29-19-2240
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Micro-sized void spheres are successfully generated in a solid polymer by use of a tightly focused femtosecond laser beam from a high-repetition-rate laser oscillator. Confocal reflection images show that the void spheres are longitudinal rotational symmetric ellipsoids with a ratio of long to short axes of approximately 1.5. Layers of void spheres are then stacked to create three-dimensional diamond-lattice photonic crystals. Three gaps are observed in the [100] direction with a suppression rate of the second gap of up to approximately 75% for a 32-layer structure. The observed first- and second-order gaps shift to longer and shorter wavelengths, respectively, as the angle of incidence increases.
© 2004 Optical Society of America
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