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Proceedings Paper

Photostability of laser emission from dye-doped spherical particles
Author(s): Shuichi Shibata; Akinori Araya; Tetsuji Yano; Masayuki Yamane
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Paper Abstract

Micrometer-sized spherical particles containing laser dyes such as Rhodamine 6G, DCM and Pyridine 1 have been fabricated by the vibrating orifice technique for the spherical cavity micro-laser. A cylindrical liquid jet of diluted hybrid raw materials passing through an orifice breaks up into equal-sized droplets by mechanical vibration. Then the solvent of these droplets was evaporated during flying with carrier gas and subsequently solidified into dye-doped hybrid-microspheres in ammonium water trap. The microspheres of different dye contents were pumped by second harmonic pulses of Q-switched Nd: YAG laser (532 nm wavelength, repetition rate is 10 Hz) and their photodegradation of lasing intensities were measured against shot number of pumping pulses. Degree of the degradation strongly depended on the pumping power and the dye content incorporated in the microsphere. Suitable pumping power and dye content gave the best date for the photostability: Laser out-put energy was consumed 50% of the initial value after 100,000 pulses for R6G and Pyridine 1, and 240,000 pulses for DCM.

Paper Details

Date Published: 23 October 2002
PDF: 8 pages
Proc. SPIE 4804, Sol-Gel Optics VI, (23 October 2002); doi: 10.1117/12.453560
Show Author Affiliations
Shuichi Shibata, Tokyo Institute of Technology (Japan)
Akinori Araya, Tokyo Institute of Technology (Japan)
Tetsuji Yano, Tokyo Institute of Technology (Japan)
Masayuki Yamane, Tokyo Institute of Technology (Japan)

Published in SPIE Proceedings Vol. 4804:
Sol-Gel Optics VI
Edward J. A. Pope; Helmut K. Schmidt; Bruce S. Dunn; Shuichi Shibata, Editor(s)

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