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Title: Optics of globular photonic crystals

The results of experimental and theoretical studies of the optical properties of globular photonic crystals - new physical objects having a crystal structure with the lattice period exceeding considerably the atomic size, are presented. As globular photonic crystals, artificial opal matrices consisting of close-packed silica globules of diameter {approx}200 nm were used. The reflection spectra of these objects characterising the parameters of photonic bands existing in these crystals in the visible spectral region are presented. The idealised models of the energy band structure of photonic crystals investigated in the review give analytic dispersion dependences for the group velocity and the effective photon mass in a globular photonic crystal. The characteristics of secondary emission excited in globular photonic crystals by monochromatic and broadband radiation are presented. The results of investigations of single-photon-excited delayed scattering of light observed in globular photonic crystals exposed to cw UV radiation and radiation from a repetitively pulsed copper vapour laser are presented. The possibilities of using globular photonic crystals as active media for lasing in different spectral regions are considered. It is proposed to use globular photonic crystals as sensitive sensors in optoelectronic devices for molecular analysis of organic and inorganic materials by the modern methodsmore » of laser spectroscopy. The results of experimental studies of spontaneous and stimulated globular scattering of light are discussed. The conditions for observing resonance and two-photon-excited delayed scattering of light are found. The possibility of accumulation and localisation of the laser radiation energy inside a globular photonic crystal is reported. (review)« less
Authors:
 [1]
  1. P.N. Lebedev Physics Institute, Russian Academy of Sciences, Moscow (Russian Federation)
Publication Date:
OSTI Identifier:
21466669
Resource Type:
Journal Article
Resource Relation:
Journal Name: Quantum Electronics (Woodbury, N.Y.); Journal Volume: 37; Journal Issue: 5; Other Information: DOI: 10.1070/QE2007v037n05ABEH013478
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; COPPER; CRYSTAL STRUCTURE; CRYSTALS; DISPERSIONS; LASER RADIATION; LASER SPECTROSCOPY; METAL VAPOR LASERS; MONOCHROMATIC RADIATION; OPALS; OPTICAL PROPERTIES; OPTICS; PHOTONS; REFLECTION; RESONANCE; SCATTERING; SECONDARY EMISSION; SENSORS; SPECTRA; ULTRAVIOLET RADIATION; VAPORS; VISIBLE RADIATION BOSONS; ELECTROMAGNETIC RADIATION; ELEMENTARY PARTICLES; ELEMENTS; EMISSION; FLUIDS; GAS LASERS; GASES; LASERS; MASSLESS PARTICLES; METALS; MINERALS; OXIDE MINERALS; PHYSICAL PROPERTIES; RADIATIONS; SILICA; SPECTROSCOPY; TRANSITION ELEMENTS