Influence of refractive index contrast on photonic band gap in 3D periodicSiO/sub 2/ matrices filled with a semiconductor

Influence of refractive index contrast on photonic band gap in 3D periodicSiO/sub 2/ matrices filled with a semiconductor

Astratov, V.N.; Vlasov, Yu.A.; Bogomolov, V.N.; Kaplyanskii, A.A.; Karimov, O.Z.; Kurdjukov, D.A.; Prokofiev, A.V.

A.F. Ioffe Physicotech. Inst., Acad. of Sci., St. Petersburg, Russia

Conference: Compound Semiconductors 1996. Proceedings of the Twenty-Third International Symposium on Compound Semiconductors , Page: 73-6

Editor: Shur, M.S.; Suris, R.A.

Publisher: IOP Publishing , Bristol, UK , 1997 , xxxvi+1051 Pages

Abstract: By spectral transmission measurements the optical stopbands in 3D periodicSiO/sub 2/ matrices (synthetic opals) are studied as a function of the refractive index contrast. In order to vary the refractive index contrast the pores of opals were filled with various liquids and with semiconductor microcrystals. In the latter case a dramatic decrease of Bragg-defined light attenuation length within the stop-band was observed indicating strong perturbation of photonic states. The parameters of the photonic lattice of the synthetic opals required to achieve a prominent depletion of the photonic density of states (pseudogap) are estimated. (8 References)