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Confined Tamm optical states coupled to quantum dots in a photoconductive detector

Harbord, Edmund and Cemlyn, Ben and Parker, Matthew and Clarke, Edmund and Kennedy, Kenneth and Henning, Ian and Adams, Mike and Oulton, Ruth (2019) 'Confined Tamm optical states coupled to quantum dots in a photoconductive detector.' Applied Physics Letters, 115 (17). ISSN 0003-6951

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Abstract

By employing Tamm optical states—states localized between a thin metal microdisk and a semiconductor distributed Bragg reflector—we demonstrate near 1300 nm (O-band), narrow wavelength (20 nm FWHM), highly spatially localized photodetection. By varying the size of the microdisk, we show spectral tuning (7 nm) of the peak optical response. Furthermore, by reducing the symmetry of the microstructures, we lift the degeneracy of the polarization, producing a polarization sensitivity in our detector. These confined Tamm states are useful not only for sensing but also for photoconductive switch applications such as optical microwave switches and terahertz generation.

Item Type: Article
Divisions: Faculty of Science and Health > Computer Science and Electronic Engineering, School of
Faculty of Science and Health > Life Sciences, School of
Depositing User: Elements
Date Deposited: 04 Nov 2019 16:14
Last Modified: 22 Nov 2019 23:15
URI: http://repository.essex.ac.uk/id/eprint/25788

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