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Proceedings Paper

Capsule-shaped metallic-cavity semiconductor lasers for low-energy on-chip light sources
Author(s): Takuo Tanemura; Baifu Zhang; Yoshiaki Nakano
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Paper Abstract

We review our recent studies on capsule-shaped InP/InGaAs metallic-cavity lasers. By introducing an optimal curvature at the metallic sidewalls of conventional rectangular metallic lasers, the electric fields of the resonant mode are pushed effectively into the center of the mesa, which allows dramatic reduction of the plasmonic loss. The validity of the scheme is verified both numerically and experimentally. From three-dimensional finite-difference time-domain simulation and rate-equation analysis, we estimate that the threshold current can be reduced to as low as 60 μA with the effective modal volume of 0.45 μm3. Up to 4-fold increase in Q value is confirmed experimentally for the cavity structure with an optimal curvature.

Paper Details

Date Published: 28 April 2016
PDF: 4 pages
Proc. SPIE 9892, Semiconductor Lasers and Laser Dynamics VII, 989214 (28 April 2016); doi: 10.1117/12.2230652
Show Author Affiliations
Takuo Tanemura, The Univ. of Tokyo (Japan)
Baifu Zhang, The Univ. of Tokyo (Japan)
Yoshiaki Nakano, The Univ. of Tokyo (Japan)


Published in SPIE Proceedings Vol. 9892:
Semiconductor Lasers and Laser Dynamics VII
Krassimir Panajotov; Marc Sciamanna; Angel Valle; Rainer Michalzik, Editor(s)

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