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Active materials embedded in photonic crystals and coupled to electromagnetic radiation

Peter Bermel, Elefterios Lidorikis, Yoel Fink, John D. Joannopoulos
2006 Physical Review B  

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A calculational scheme is presented to model the interaction of light with active dielectric media, represented by four-level atomic materials, surrounded by photonic crystals. Optically pumped lasing is studied in three model systems: a Fabry-Perot cavity, a line of defects in a two-dimensional square lattice of rods, and a cylindrical photonic crystal. Field profiles and conversion efficiencies are calculated for these systems. It is shown that high conversion efficiency can be achieved for
more » ... rge regions of active material in the cavity, as well as for a single fluorescent atom in a hollow-core cylindrical photonic crystal, suggesting designs for ultralowthreshold lasers and ultrasensitive biological sensors.
doi:10.1103/physrevb.73.165125 fatcat:e6agqyk2jvf4zeivnv3fijfbla
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Peter Bermel, Elefterios Lidorikis, Yoel Fink, John D. Joannopoulos. "Active materials embedded in photonic crystals and coupled to electromagnetic radiation." Physical Review B 73.16 (2006)