Low threshold fiber taper coupled rare earth ion-doped chalcogenide microsphere laser

We report the applications of a low-cost and environmentally friendly chalcogenide glass, 75GeS2-15Ga2S3-10CsI, in building active microsphere laser oscillators. A silica fiber taper is used as the coupling mechanism. With an 808-nm laser diode as a pump source, we show that a high-Q （-, 6× 10^4） la...

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Published inChinese physics B Vol. 24; no. 4; pp. 237 - 240
Main Author 李超然 戴世勋 张勤远 沈祥 王训四 张培晴 路来伟 吴越豪 吕社钦
Format Journal Article
LanguageEnglish
Published 01.04.2015
Subjects
Chalcogenides
Fibers
Joining
Lasers
Microspheres
Pumps
Rare earth metals
Thresholds
光纤耦合
微球激光器
激光二极管
激光振荡器
硫属化物玻璃
硫系
稀土离子掺杂
门槛
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Summary:We report the applications of a low-cost and environmentally friendly chalcogenide glass, 75GeS2-15Ga2S3-10CsI, in building active microsphere laser oscillators. A silica fiber taper is used as the coupling mechanism. With an 808-nm laser diode as a pump source, we show that a high-Q （-, 6× 10^4） laser mode could be obtained from a 75-μm diameter microsphere that is coupled with a 1.77-μm waist-diameter fiber taper. The threshold of the incident pump power is 1.39 mW, which is considerably lower than those of previously reported free-space coupled chalcogenide microsphere lasers. We also note an apparent enhancement in laser power generated from this chalcogenide microsphere laser.
Bibliography:We report the applications of a low-cost and environmentally friendly chalcogenide glass, 75GeS2-15Ga2S3-10CsI, in building active microsphere laser oscillators. A silica fiber taper is used as the coupling mechanism. With an 808-nm laser diode as a pump source, we show that a high-Q （-, 6× 10^4） laser mode could be obtained from a 75-μm diameter microsphere that is coupled with a 1.77-μm waist-diameter fiber taper. The threshold of the incident pump power is 1.39 mW, which is considerably lower than those of previously reported free-space coupled chalcogenide microsphere lasers. We also note an apparent enhancement in laser power generated from this chalcogenide microsphere laser.
11-5639/O4
chalcogenide, microspheres, laser, whispering gallery modes
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1674-1056
2058-3834
1741-4199
DOI:10.1088/1674-1056/24/4/044208