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Proceedings Paper

Preparation of spherical particles by vibrating orifice technique
Author(s): Shuichi Shibata; Atsushi Tomizawa; Hidemi Yoshikawa; Tetsuji Yano; Masayuki Yamane
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Paper Abstract

Preparation of micrometer-sized spherical particles containing Rhodamine 6G (R6G) has been investigated for the spherical cavity micro-laser. Using phenyl triethoxy silane (PTES) as a starting material, R6G-doped monodisperse spherical particles were prepared by the vibrating orifice technique. Processing consists of two major processes: (1) Hydrolysis and polymerization of PTES and (2) Droplet formation from PTES oligomers by vibrating orifice technique. A cylindrical liquid jet passing through the orifice of 10 and 20 micrometers in diameter breaks up into equal- sized droplets by mechanical vibration. Alcohol solvent of these droplets was evaporated during flying with carrier gas and subsequently solidified in ammonium water trap. For making smooth surface and god shaped particles, control of molecular weight of PTES oligomer was essential. R6G-doped hybrid spherical particles of 4 to 10 micrometers size of cavity structure were successfully obtained. The spherical particles were pumped by a second harmonic pulse of Q- switched Nd:YAG laser and laser emission peaks were observed at wavelengths which correspond to the resonance modes.

Paper Details

Date Published: 2 May 2000
PDF: 8 pages
Proc. SPIE 3943, Sol-Gel Optics V, (2 May 2000); doi: 10.1117/12.384328
Show Author Affiliations
Shuichi Shibata, Tokyo Institute of Technology (Japan)
Atsushi Tomizawa, Tokyo Institute of Technology (Japan)
Hidemi Yoshikawa, Tokyo Institute of Technology (Japan)
Tetsuji Yano, Tokyo Institute of Technology (Japan)
Masayuki Yamane, Tokyo Institute of Technology (Japan)


Published in SPIE Proceedings Vol. 3943:
Sol-Gel Optics V
Bruce S. Dunn; Edward J. A. Pope; Helmut K. Schmidt; Masayuki Yamane, Editor(s)

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