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Laser Emission from Dye-Doped Organic-Inorganic Particles of Microcavity Structure |
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| Authors: | S Shibata M Yamane K Kamada K Ohta K Sasaki H Masuhara |
| Institution: | (1) Dept. Inorganic Materials, Tokyo Institute of Technology, 2-12-1 Ookayama, Megro-ku, 152 Tokyo, Japan;(2) Osaka National Research Institute, Agency of Industrial Science and Technology, MITI, 1-8-31, Midorigaoka, 563 Ikeda, Japan;(3) Dept. Applied Physics, Osaka University, 2-1 Yamadaoka, 565 Suita, Japan |
| Abstract: | Interaction between laser light and a micrometer-size spherical particle causes an optical resonance in its interior since a spherical wall acts as a cavity. The present work seeks to investigate the preparation of organicinorganic particles containing laser dyes and demonstrate their lasing behavior. Rhodamine 6G was incorporated into organic-inorganic spherical particles of micrometer-size using sol-gel technique. Phenyl triethoxy silane was used as a starting material for particles. Particle size was 1–10 μm and dye content was 1–7 × 10−5 mol/g. A particle was set on a glass plate in air and pumped by a second harmonic pulse ofQ-switched Nd-YAG laser (532 nm wavelength). From a particle of 6 μm in diameter, a strong laser emission peak was observed at 598 nm wavelength which corresponded to the whispering-gallery mode resonance. |
| Keywords: | laser emission organic-inorganic particles microcavity |
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