Laser Rapid Prototyping of Photonic Band-Gap Microstructures

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Science  28 Feb 1997:
Vol. 275, Issue 5304, pp. 1284-1286
DOI: 10.1126/science.275.5304.1284

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Three-dimensional periodic microstructures of aluminum oxide, which are important for creating photonic band-gap structures (PBGs), were fabricated by laser rapid prototyping by means of laser-induced direct-write deposition from the gas phase. The structures consisted of layers of parallel rods forming a face-centered tetragonal lattice with lattice constants of 66 and 133 micrometers. These structures showed transmission minima centered around 4 terahertz (75 micrometers) and 2 terahertz (150 micrometers), respectively. PBGs will allow precise control of the optical properties of materials, including lasers without threshold.

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