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Journal of Nanophotonics

Design of ultrasmall plasmonic coaxial lasers on Si
Author(s): Kim-Peng Lim; Chee-Wei Lee; Gurpreet Singh; Qian Wang
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Paper Abstract

An ultrasmall plasmonic coaxial laser made of metal–semiconductor–metal on a silicon substrate through an interlayer bonding was designed. From the effective refractive indices and the transparent material gain, the nanoscale structural dimensions with both the radius and the width at 80 nm for the coaxial plasmonic waveguide were decided. The influence of the interlayer bonding material on the optimization of resonant wavelength and Q-factor was evaluated. A three-dimensional body-of-revolution finite-difference time-domain method was used to show that a coaxial cavity with a SiO2 interlayer can laze at around 1480-nm wavelength with a net optical threshold power density of about 800  W/cm2 and a subwavelength mode volume of 0.014(λ/2n)3. This nanolaser on silicon platform will benefit those working on nanophotonic integrated circuits.

Paper Details

Date Published: 16 December 2013
PDF: 5 pages
J. Nanophoton. 7(1) 070598 doi: 10.1117/1.JNP.7.070598
Published in: Journal of Nanophotonics Volume 7, Issue 1
Show Author Affiliations
Kim-Peng Lim, A*STAR - Data Storage Institute (Singapore)
Chee-Wei Lee, A*STAR - Data Storage Institute (Singapore)
Gurpreet Singh, A*STAR - Data Storage Institute (Singapore)
Qian Wang, A*STAR - Data Storage Institute (Singapore)

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