Confined Band Gap in an Air-Bridge Type of Two-Dimensional AlGaAs Photonic Crystal
- 12 March 2001
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 86 (11), 2289-2292
- https://doi.org/10.1103/physrevlett.86.2289
Abstract
The transmittance spectrum for an air-bridge type of AlGaAs photonic crystal (PC) slabs successfully fabricated was measured. It is found that the observed spectrum is consistent with both the theoretical band structure and the calculated one. Moreover, the transmittance due to the modes below the light line is found to be almost , indicating that the guided modes should exist. The respective stop bands are observed in the direction for TM-like and TE-like modes, implying that a photonic band gap should exist for the TE-like guided modes. The present PC is very suited for controlling the radiation field.
Keywords
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