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Electrical Control of Linear Dichroism in Black Phosphorus from the Visible to Mid-Infrared

Sherrott, Michelle C. and Whitney, William S. and Jariwala, Deep and Went, Cora M. and Wong, Joeson and Rossman, George R. and Atwater, Harry A. (2017) Electrical Control of Linear Dichroism in Black Phosphorus from the Visible to Mid-Infrared. . (Submitted)

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The incorporation of electrically tunable materials into photonic structures such as waveguides and metasurfaces enables dynamic control of light propagation by an applied potential. While many materials have been shown to exhibit electrically tunable permittivity and dispersion, including transparent conducting oxides (TCOs) and III-V semiconductors and quantum wells, these materials are all optically isotropic in the propagation plane. In this work, we report the first known example of electrically tunable linear dichroism, observed here in few-layer black phosphorus (BP), which is a promising candidate for multi-functional, broadband, tunable photonic elements. We measure active modulation of the linear dichroism from the mid-infrared to visible frequency range, which is driven by anisotropic quantum-confined Stark and Burstein-Moss effects, and field-induced forbidden-to-allowed optical transitions. Moreover, we observe high BP absorption modulation strengths, approaching unity for certain thicknesses and photon energies.

Item Type:Report or Paper (Discussion Paper)
Related URLs:
URLURL TypeDescription Paper
Sherrott, Michelle C.0000-0002-7503-9714
Whitney, William S.0000-0001-5269-2967
Jariwala, Deep0000-0002-3570-8768
Wong, Joeson0000-0002-6304-7602
Rossman, George R.0000-0002-4571-6884
Atwater, Harry A.0000-0001-9435-0201
Additional Information:The authors gratefully acknowledge support from the Department of Energy, Office of Science under Grant DE-FG02-07ER46405 and for facilities of the DOE “Light-Material Interactions in Energy Conversion” Energy Frontier Research Center (DE-SC0001293). W.S.W. also acknowledges support from an NDSEG Graduate Research Fellowship. M.C.S., D.J. and C.M.W. acknowledge fellowship support from the Resnick Institute. J.W. acknowledges support from the National Science Foundation Graduate Research Fellowship under grant no. 1144469.
Group:Resnick Sustainability Institute
Funding AgencyGrant Number
Department of Energy (DOE)DE-FG02-07ER46405
Department of Energy (DOE)DE-SC0001293
National Defense Science and Engineering Graduate (NDSEG) FellowshipUNSPECIFIED
Resnick Sustainability InstituteUNSPECIFIED
NSF Graduate Research FellowshipDGE-1144469
Record Number:CaltechAUTHORS:20180220-074419931
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:84880
Deposited By: Tony Diaz
Deposited On:22 Feb 2018 03:33
Last Modified:25 Nov 2020 17:31

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