Laser-machined layer-by-layer metallic photonic band-gap structures
- Materials Group, Institute of Electronic Structure and Laser (IESL), Foundation for Research and Technology-Hellas (FO.R.T.H.), Heraklion 711 10 (Greece)
- Ames Laboratory and Microelectronics Research Center, Iowa State University, Ames, Iowa 50011 (United States)
Metallic photonic band-gap crystals operating in the microwave frequency range were fabricated by laser precision machining. They consist of stainless steel plates with a tetragonal lattice of holes and a lattice constant of 15 mm. Transmission measurements show that periodic crystals exhibit a cutoff frequency in the 8{endash}18 GHz range, below which no propagation is allowed. The cutoff frequency can be easily tuned by varying the interlayer distance or the filling fraction of the metal. Combinations of plates with different hole diameters create defect modes with relatively sharp peaks, which are tunable. The experimental measurements are in good agreement with theoretical calculations. {copyright} {ital 1999 American Institute of Physics.}
- OSTI ID:
- 341349
- Journal Information:
- Applied Physics Letters, Vol. 74, Issue 22; Other Information: PBD: May 1999
- Country of Publication:
- United States
- Language:
- English
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