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Proceedings Paper

Two-dimensional microsphere quasi-crystal: fabrication and properties
Author(s): Natalia E. Noginova; Putcha Venkateswarlu; Nickolai V. Kukhtarev; Sergey S. Sarkisov; Mikhail A. Noginov; H. John Caulfield; Michael J. Curley
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Paper Abstract

2D quasi-crystals were fabricated from polystyrene microspheres and characterized for their structural, diffraction, and non-linear optics properties. The quasi- crystals were produced with the method based on Langmuir- Blodgett thin film technique. Illuminating the crystal with the laser beam, we observed the diffraction pattern in the direction of the beam propagation and in the direction of the back scattering, similar to the x-ray Laue pattern observed in regular crystals with hexagonal structure. The absorption spectrum of the quasi-crystal demonstrated two series of regular maxima and minima, with the spacing inversely proportional to the microspheres diameter. Illumination of the dye-doped microspheres crystal with Q- switched radiation of Nd:YAG laser showed the enhancement of non-linear properties, in particular, second harmonic generation.

Paper Details

Date Published: 11 November 1996
PDF: 10 pages
Proc. SPIE 2824, Adaptive Computing: Mathematical and Physical Methods for Complex Environments, (11 November 1996); doi: 10.1117/12.258137
Show Author Affiliations
Natalia E. Noginova, Alabama A&M Univ. (United States)
Putcha Venkateswarlu, Alabama A&M Univ. (United States)
Nickolai V. Kukhtarev, Alabama A&M Univ. (United States)
Sergey S. Sarkisov, Alabama A&M Univ. (United States)
Mikhail A. Noginov, Alabama A&M Univ. (United States)
H. John Caulfield, Alabama A&M Univ. (United States)
Michael J. Curley, Alabama A&M Univ. (United States)

Published in SPIE Proceedings Vol. 2824:
Adaptive Computing: Mathematical and Physical Methods for Complex Environments
H. John Caulfield; Su-Shing Chen, Editor(s)

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