Periodic metallo-dielectric structure in diamond

Intense ultrashort light pulses induce three dimensional localized phase transformation of diamond. Photoinduced amorphous structures have electrical conducting properties of a maximum of 64 S/m based on a localized transition from sp(3) to sp(2) in diamond. The laser parameters of fluence and scann...

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Bibliographic Details
Published in:Optics express 2009-01, Vol.17 (1), p.46-54
Main Authors: Shimizu, M, Shimotsuma, Y, Sakakura, M, Yuasa, T, Homma, H, Minowa, Y, Tanaka, K, Miura, K, Hirao, K
Format: Article
Language:English
Subjects:
Crystallization
Crystallography
Diamond
Electric Conductivity
Kinetics
Lasers
Light
Models, Theoretical
Nanotubes, Carbon
Normal Distribution
Optics and Photonics
Scattering, Radiation
Surface Properties
X-Rays
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Summary:Intense ultrashort light pulses induce three dimensional localized phase transformation of diamond. Photoinduced amorphous structures have electrical conducting properties of a maximum of 64 S/m based on a localized transition from sp(3) to sp(2) in diamond. The laser parameters of fluence and scanning speed affect the resultant electrical conductivities due to recrystallization and multi-filamentation phenomena. We demonstrate that the laser-processed diamond with the periodic cylinder arrays have the characteristic transmission properties in terahertz region, which are good agreement with theoretical calculations. The fabricated periodic structures act as metallo-dielectric photonic crystal.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.17.000046