High purcell factor due to coupling of a single emitter to a dielectric slot waveguide

Pavel Kolchin; Nitipat Pholchai; Maiken H Mikkelsen; Jinyong Oh; Sadao Ota; M Saif Islam; Xiaobo Yin; Xiang Zhang

doi:10.1021/nl5037808

High purcell factor due to coupling of a single emitter to a dielectric slot waveguide

Nano Lett. 2015 Jan 14;15(1):464-8. doi: 10.1021/nl5037808. Epub 2014 Dec 11.

Authors

Pavel Kolchin¹, Nitipat Pholchai, Maiken H Mikkelsen, Jinyong Oh, Sadao Ota, M Saif Islam, Xiaobo Yin, Xiang Zhang

Affiliation

¹ NSF Nanoscale Science and Engineering Center (NSEC), University of California , 3112 Etcheverry Hall, Berkeley, California 94720, United States.

PMID: 25432015
DOI: 10.1021/nl5037808

Abstract

We demonstrate an all-dielectric quantum electrodynamical nanowire-slab system with a single emitter that concentrates the extremely intense light at the scale of 10 × 75 nm(2). The quantum dot exhibits a record high 31-fold spontaneous decay rate enhancement, its optical saturation and blinking are strongly suppressed, and 80% of emission couples into a waveguide mode.

Keywords: Nanophotonics; all-dielectric waveguide; deep subwavelength light confinement; emission coupling; field enhancement; quantum dot; waveguide QED.

Publication types

Research Support, U.S. Gov't, Non-P.H.S.