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Title: Guiding and binding of cavity photons with patterned two-dimensional semiconductors

Abstract

Strong optical responses of two-dimensional (2D) semiconductors like transition metal dichalcogenides (TMDs) draw substantial attention for prospective applications in optoelectronics and photonics. Here, we propose a potentially attractive application avenue via embedding patterns of 2D semiconductors (shaped, e.g., as strips or disks) in planar optical microcavities to engineer photonic modes in the dissipation-free spectral range below the optical gap. While the cavity confines electromagnetic fields to its interior, the high in-plane polarizability of 2D materials causes the appearance of the cavity modes that are bound to the patterned pieces in the lateral directions along the cavity. A TMD strip would then act to guide such bound cavity photons, while a pair of neighboring strips could operate similar to coupled photonic waveguides. Our calculations relying on experimentally measured TMD optical suspectibilities, explicitly demonstrate this type of behavior accompanied by photonic binding energies on the order of 10 meV and micron-scale spatial extents. They indicate that patterned 2D semiconductor structures employed within microcavities could represent a new material platform to enable various functionalities of integrated photonics.

Authors:
ORCiD logo;
Publication Date:
Research Org.:
Univ. of Texas, Dallas, Richardson, TX (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1462162
Alternate Identifier(s):
OSTI ID: 1502486
Grant/Contract Number:  
SC0010697
Resource Type:
Published Article
Journal Name:
Optics Express
Additional Journal Information:
Journal Name: Optics Express Journal Volume: 26 Journal Issue: 16; Journal ID: ISSN 1094-4087
Publisher:
Optical Society of America
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Gartstein, Yuri N., and Malko, Anton V. Guiding and binding of cavity photons with patterned two-dimensional semiconductors. United States: N. p., 2018. Web. doi:10.1364/OE.26.020823.
Gartstein, Yuri N., & Malko, Anton V. Guiding and binding of cavity photons with patterned two-dimensional semiconductors. United States. doi:10.1364/OE.26.020823.
Gartstein, Yuri N., and Malko, Anton V. Mon . "Guiding and binding of cavity photons with patterned two-dimensional semiconductors". United States. doi:10.1364/OE.26.020823.
@article{osti_1462162,
title = {Guiding and binding of cavity photons with patterned two-dimensional semiconductors},
author = {Gartstein, Yuri N. and Malko, Anton V.},
abstractNote = {Strong optical responses of two-dimensional (2D) semiconductors like transition metal dichalcogenides (TMDs) draw substantial attention for prospective applications in optoelectronics and photonics. Here, we propose a potentially attractive application avenue via embedding patterns of 2D semiconductors (shaped, e.g., as strips or disks) in planar optical microcavities to engineer photonic modes in the dissipation-free spectral range below the optical gap. While the cavity confines electromagnetic fields to its interior, the high in-plane polarizability of 2D materials causes the appearance of the cavity modes that are bound to the patterned pieces in the lateral directions along the cavity. A TMD strip would then act to guide such bound cavity photons, while a pair of neighboring strips could operate similar to coupled photonic waveguides. Our calculations relying on experimentally measured TMD optical suspectibilities, explicitly demonstrate this type of behavior accompanied by photonic binding energies on the order of 10 meV and micron-scale spatial extents. They indicate that patterned 2D semiconductor structures employed within microcavities could represent a new material platform to enable various functionalities of integrated photonics.},
doi = {10.1364/OE.26.020823},
journal = {Optics Express},
number = 16,
volume = 26,
place = {United States},
year = {2018},
month = {7}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1364/OE.26.020823

Figures / Tables:

Fig. 1 Fig. 1: Schematically, the dispersion ω(k) of the cavity modes as a function of the in-plane wavenumber k: Black line is for the bare cavity, red and blue lines for the cavity with a uniform polarizable 2D layer in the central plane (as shown in the inset). The layer causesmore » a splitting of the dispersion branches for the s-polarized (or TE) and p-polarized (TM) waves.The dashed black lines indicate the dispersion ω = ck/n of the bulk-medium light line (refractive index n) and the position of the ideal (in this illustration) single dispersionless excitonic resonance at frequency ω0.« less

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    Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.