Photonic quasicrystal single-cell cavity mode

Sun-Kyung Kim; Jee-Hye Lee; Se-Heon Kim; In-Kag Hwang; Yong-Hee Lee; Sung-Bock Kim
January 2005
Applied Physics Letters;1/17/2005, Vol. 86 Issue 3, p031101
Academic Journal
We propose and realize the photonic quasicrystal (PQC) single-cell resonator based on a InP-InGaAsP freestanding slab. A well-defined hexapole-like localized state following a C6ν symmetry is identified from the PQC single-cell resonator. In this type of hexapole mode, the electromagnetic energy is strongly concentrated on the dielectric region, in contrast to that in a triangular lattice photonic crystal. By tailoring the structural parameters, the hexapole mode shows a maximum theoretical quality factor of ∼20 000. The PQC single-cell resonator lases in a single hexapole mode with a threshold of ∼0.6 mW at room temperature.


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