Title: Physics and applications of photonic nanocrystals

Authors: Ekmel Ozbay, Kaan Guven, Koray Aydin, Mehmet Bayindir

Addresses: Department of Physics, Bilkent University, Bilkent 06800, Ankara, Turkey. ' Department of Physics, Bilkent University, Bilkent 06800, Ankara, Turkey. ' Department of Physics, Bilkent University, Bilkent 06800, Ankara, Turkey. ' Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA 02139-4307, USA

Abstract: Photonic nanocrystals are periodic dielectric or metallic structures having photonic bands in analogy to electronic bands of semiconductors. The presence of photonic band-gaps, where the propagation of photons of certain frequencies is prohibited, and the variety of photon dispersions give rise to novel and unusual optical phenomena. Consequently, photonic crystals are now envisaged as an essential building block of future photonic devices. This paper aims to provide a review of contemporary developments on the physics and applications of photonic crystals with an emphasis on optical properties of coupled microcavity waveguides and on the negative refraction phenomenon. The enhancement of spontaneous emission in a silicon nitride photonic nanocrystal is investigated in detail. Both the negative refraction of a Gaussian beam and the focusing of a microwave point source through a photonic crystal slab with subwavelength resolution are studied experimentally.

Keywords: silicon nitride photonic nanocrystals; photonic crystals; coupled microcavity waveguides; spontaneous emission; lasers; negative refraction; left-handed material; nanotechnology; nanostructures; optical properties; physics.

DOI: 10.1504/IJNT.2004.005976

International Journal of Nanotechnology, 2004 Vol.1 No.4, pp.379 - 398

Available online: 12 Jan 2005

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