Title: Propagation and absorption of light in planar dielectric waveguides with two-dimensional semiconductors

Abstract

Strong optical responses of atomically thin two-dimensional (2D) semiconductors make them attractive candidates for integration into various photonic and optoelectronic structures. We discuss some fundamental effects of such integration into planar dielectric waveguides by demonstrating that a substantial modification of the spectrum of waveguide modes can occur due to high in-plane polarizability of 2D layers. Our calculations illustrate both the conceptual possibilities associated with sharp excitonic resonances as well as the results obtained with the experimentally assessed polarizability of monolayer MoS₂ over a broad spectral range. We also point out that waveguide structures could also enable the tunable absorption by 2D semiconductors of the light that propagates along them, a modality quite different from the traditional light harvesting geometry.

Authors:

Gartstein, Yuri N.; Malko, Anton V.

Publication Date:

Tue Sep 12 00:00:00 EDT 2017

Research Org.:

Univ. of Texas at Dallas, Richardson, TX (United States)

Sponsoring Org.:

USDOE Office of Science (SC), Basic Energy Sciences (BES)

OSTI Identifier:

1389701

Alternate Identifier(s):

OSTI ID: 1463876

Grant/Contract Number:  

SC0010697

Resource Type:

Published Article

Journal Name:

Optics Express

Additional Journal Information:

Journal Name: Optics Express Journal Volume: 25 Journal Issue: 19; Journal ID: ISSN 1094-4087

Publisher:

Optical Society of America (OSA)

Country of Publication:

United States

Language:

English

Subject:

36 MATERIALS SCIENCE