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Proceedings Paper

Formation of gratings and two-dimensional photonic structures by laser-induced nanocrystallization
Author(s): Takumi Fujiwara; Ryoh Ogawa; Yasuhiko Benino; Takayuki Komatsu; Junji Nishii
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Paper Abstract

We propose and demonstrate gratings and two-dimensional (2D) photonic structure of nanometer-scale crystals/particles in glass surface created by one of the most simple way every reported. Grating structures consisting of nanocrystals have been fabricated on surface of tellurite-based glasses, with a composition of 15K2O-15Nb2O5-70TeO2 (mol%), using photoinduced nano-crystallization. A conventional phase mask technique was performed for the grating fabrication with a XeCl excimer laser operating at 308 nm. Periodic structure with 400 nm pitch constructed by lines of regularly ordered nanoparticles having a diameter up to about 100 nm was confirmed by atomic force microscopy and scanning electron microscopy. It is strongly suggest from measurement of X-ray diffraction that the photoinduced nanoparticles have a crystalline phase, and also suggested from measurement of optical frequency doubling that the periodic nanoparticle structure exhibits second harmonic generation (SHG) with an unique polarization dependence of SHG based on nano-structures of dielectric polarization. In addition, such a simple method of phase mask usage was applied to formation of 2D array, and the 2D structures of nano-particles/holes were successfully obtained by laser irradiations.

Paper Details

Date Published: 16 July 2003
PDF: 9 pages
Proc. SPIE 5061, International Symposium on Photonic Glass (ISPG 2002), (16 July 2003); doi: 10.1117/12.517329
Show Author Affiliations
Takumi Fujiwara, Nagaoka Univ. of Technology (Japan)
Ryoh Ogawa, Nagaoka Univ. of Technology (Japan)
Yasuhiko Benino, Nagaoka Univ. of Technology (Japan)
Takayuki Komatsu, Nagaoka Univ. of Technology (Japan)
Junji Nishii, National Institute of Advanced Industrial Science and Technology (Japan)

Published in SPIE Proceedings Vol. 5061:
International Symposium on Photonic Glass (ISPG 2002)
Congshan Zhu, Editor(s)

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