Special Issue "Current Trends in Application of Photonic Crystals"

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A special issue of Crystals (ISSN 2073-4352).

Deadline for manuscript submissions: closed (31 July 2012)

Special Issue Editor

Guest Editor
Dr. Hans Hagemann

Department of Physical Chemistry, University of Geneva - Sciences II, 30 quai Ernest-Ansermet, 1211 Geneva 4, Switzerland
Website | E-Mail
Interests: crystal chemistry and optical and vibrational spectroscopy in rare-earth doped insulators (halides, oxides) as well as on compounds with borohydrides as potential hydrogen storage materials

Keywords

Luminescent Materials:
  • white phosphors
  • upconversion
  • downconversion,
  • persistent phosphors
  • nanophosphors

Other Crystals:

  • non-linear optical crystals

Published Papers (3 papers)

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Research

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Open AccessCommunication Simulation Design for Rutile-TiO2 Nanostructures with a Large Complete-Photonic Bandgap in Electrolytes
Crystals 2012, 2(4), 1483-1491; doi:10.3390/cryst2041483
Received: 4 April 2012 / Revised: 9 October 2012 / Accepted: 10 October 2012 / Published: 26 October 2012
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Abstract
The photonic bands of various TiO2 2D photonic crystals, i.e., cylindrical, square and hexagonal columns connected with/without walls and filled with acetonitrile, were investigated from the perspective of dye-sensitized solar cells. The finite-difference time-domain methods revealed that two-dimensional (2D) photonic crystals
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The photonic bands of various TiO2 2D photonic crystals, i.e., cylindrical, square and hexagonal columns connected with/without walls and filled with acetonitrile, were investigated from the perspective of dye-sensitized solar cells. The finite-difference time-domain methods revealed that two-dimensional (2D) photonic crystals with rods connected with walls composed of TiO2 and electrolytes had complete photonic band gaps under specific conditions. This optimally designed bandgap reaches a large Δω/ωmid value, 1.9%, in a triangular array of square rods connected with walls, which is the largest complete 2D bandgap thus far reported for a photochemical system. These discoveries would promote the photochemical applications of photonic crystals. Full article
(This article belongs to the Special Issue Current Trends in Application of Photonic Crystals)
Open AccessArticle Optical Fiber for High-Power Optical Communication
Crystals 2012, 2(4), 1382-1392; doi:10.3390/cryst2041382
Received: 27 July 2012 / Revised: 6 September 2012 / Accepted: 10 September 2012 / Published: 28 September 2012
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Abstract
We examined optical fibers suitable for avoiding such problems as the fiber fuse phenomenon and failures at bends with a high power input. We found that the threshold power for fiber fuse propagation in photonic crystal fiber (PCF) and hole-assisted fiber (HAF) can
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We examined optical fibers suitable for avoiding such problems as the fiber fuse phenomenon and failures at bends with a high power input. We found that the threshold power for fiber fuse propagation in photonic crystal fiber (PCF) and hole-assisted fiber (HAF) can exceed 18 W, which is more than 10 times that in conventional single-mode fiber (SMF). We considered this high threshold power in PCF and HAF to be caused by a jet of high temperature fluid penetrating the air holes. We showed examples of two kinds of failures at bends in conventional SMF when the input power was 9 W. We also observed the generation of a fiber fuse under a condition that caused a bend-loss induced failure. We showed that one solution for the failures at bends is to use optical fibers with a low bending loss such as PCF and HAF. Therefore, we consider PCF and HAF to be attractive solutions to the problems of the fiber fuse phenomenon and failures at bends with a high power input. Full article
(This article belongs to the Special Issue Current Trends in Application of Photonic Crystals)

Review

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Open AccessReview Applications of Random Nonlinear Photonic Crystals Based on Strontium Tetraborate
Crystals 2012, 2(4), 1393-1409; doi:10.3390/cryst2041393
Received: 30 July 2012 / Revised: 12 September 2012 / Accepted: 17 September 2012 / Published: 1 October 2012
Cited by 7 | PDF Full-text (1385 KB) | HTML Full-text | XML Full-text
Abstract
Properties of strontium tetraborate (SBO) and features of as-grown anti-parallel domains are summarized. From the point of view of nonlinear optics, these domains form nonlinear photonic crystals (NPC). Applications of NPC to the deep ultraviolet generation and fs pulse diagnostics are described. NPC
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Properties of strontium tetraborate (SBO) and features of as-grown anti-parallel domains are summarized. From the point of view of nonlinear optics, these domains form nonlinear photonic crystals (NPC). Applications of NPC to the deep ultraviolet generation and fs pulse diagnostics are described. NPC and SBO are prospective media for the creation of a widely tunable source of fs pulses in the vacuum ultraviolet and for autocorrelation diagnostics of broadly tunable sources. Full article
(This article belongs to the Special Issue Current Trends in Application of Photonic Crystals)

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