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Optical amplification enhancement in photonic crystals (Articolo in rivista)

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Optical amplification enhancement in photonic crystals (Articolo in rivista) (literal)

Anno

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Alternative label

Sapienza, R. (1,*); Leonetti, M. (1); Froufe-Pérez, L. S. (1); Galisteo-López, J. F. (1); Conti, C. (2); López, C. (1,+) (2011)
Optical amplification enhancement in photonic crystals
in Physical review. A
(literal)

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Sapienza, R. (1,*); Leonetti, M. (1); Froufe-Pérez, L. S. (1); Galisteo-López, J. F. (1); Conti, C. (2); López, C. (1,+) (literal)

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1 Instituto de Ciencia de Materiales de Madrid (CSIC) and Unidad Asociada CSIC-UVigo, Cantoblanco, E-28049 Madrid, Spain 2 Research Center INFM-CNR, c/o Universitá di Roma Sapienza, I-00185 Roma, Italy *Current address: ICFOInstitut de Ciencies Fotoniques, Mediterranean Technology Park, E-08860 Castelldefels (Barcelona), Spain +www.luxrerum.org; cefe@icmm.csic.es (literal)

Titolo

Abstract

Improving and controlling the efficiency of a gain medium is one of the most challenging problems of laser research. By measuring the gain length in an opal-based photonic crystal doped with laser dye, we demonstrate that optical amplification is more than twenty-fold enhanced along the Gamma-K symmetry directions of the face-centered- cubic photonic crystal. These results are theoretically explained by directional variations of the density of states, providing a quantitative connection between density of the states and light amplification. (literal)

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