Cylindrical microcavity laser based on the evanescent-wave-coupled gain

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A microcavity laser based on the gain only in the evanescent field region of whispering gallery modes has been demonstrated. A cylindrical microcavity of 125 mu m diam was surrounded by rhodamine 6G dye molecules in an ethanol solution of lower refractive index such that whispering gallery modes of the microcavity underwent laser oscillation when the dye molecules in the evanescent field region outside the cavity were excited by a second harmonic of a Nd:YAG laser. For particular pumping spots, single-mode laser oscillation of a transverse magnetic mode was observed at about 600 nm with associated cavity Q of 3 x 10(7).
Publisher
Amer Physical Soc
Issue Date
2000-10
Language
English
Article Type
Article
Keywords

SILICA MICROSPHERES; QUANTUM-DOT; THRESHOLD; MICRODROPLETS; FLUORESCENCE; MODES; SEMICONDUCTOR; ENHANCEMENT; RESONANCES; CAVITY

Citation

PHYSICAL REVIEW LETTERS, v.85, no.15, pp.3161 - 3164

ISSN
0031-9007
URI
http://hdl.handle.net/10203/71239
Appears in Collection
PH-Journal Papers(저널논문)
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