Highly directional emission from few-micron-size elliptical microdisks

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Few-micron-sized elliptically deformed InGaAsP-InP microdisk lasers are fabricated and highly directional emissions are observed along the direction perpendicular to the surface of highest curvature. As the size of the elliptical microdisk is reduced, both the azimuthal angular spreading and the number of lobes become smaller. The improved directionality of the smaller structure is attributed to the enhanced tunneling loss at the high curvature surfaces. The far-field radiation is linearly polarized. Charge-coupled-device images confirmed the existence of strong near-field emission in the vicinity of high curvature surfaces. (C) 2004 American Institute of Physics.
Publisher
AMER INST PHYSICS
Issue Date
2004-02
Language
English
Article Type
Article
Keywords

LASING MODES; FAR-FIELD; LASERS; MICROSPHERES; RESONATORS

Citation

APPLIED PHYSICS LETTERS, v.84, pp.861 - 863

ISSN
0003-6951
DOI
10.1063/1.1646459
URI
http://hdl.handle.net/10203/21051
Appears in Collection
PH-Journal Papers(저널논문)
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