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2D semiconductor nonlinear plasmonic modulators

Journal Article · · Nature Communications
 [1];  [2];  [3];  [2];  [2];  [4];  [5];  [6];  [6];  [2];  [2]
  1. Univ. of Arizona, Tucson, AZ (United States). Dept. of Physics; Univ. of Arizona, Tucson, AZ (United States). College of Optical Sciences; DOE/OSTI
  2. Univ. of Arizona, Tucson, AZ (United States). Dept. of Physics
  3. Univ. of Arizona, Tucson, AZ (United States). Dept. of Physics; Univ. of Arizona, Tucson, AZ (United States). College of Optical Sciences
  4. Univ. of Tennessee, Knoxville, TN (United States). Dept. of Materials Science and Engineering
  5. Univ. of Tennessee, Knoxville, TN (United States). Dept. of Materials Science and Engineering; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science and Technology Division; National Inst. for Materials Science (NIMS), Tsukuba (Japan)
  6. National Inst. for Materials Science (NIMS), Tsukuba (Japan)
A plasmonic modulator is a device that controls the amplitude or phase of propagating plasmons. In a pure plasmonic modulator, the presence or absence of a plasmonic pump wave controls the amplitude of a plasmonic probe wave through a channel. This control has to be mediated by an interaction between disparate plasmonic waves, typically requiring the integration of a nonlinear material. In this work, we demonstrate a 2D semiconductor nonlinear plasmonic modulator based on a WSe2 monolayer integrated on top of a lithographically defined metallic waveguide. We utilize the strong interaction between the surface plasmon polaritons (SPPs) and excitons in the WSe2 to give a 73 % change in transmission through the device. We demonstrate control of the propagating SPPs using both optical and SPP pumps, realizing a 2D semiconductor nonlinear plasmonic modulator, with an ultrafast response time of 290 fs.
Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1624175
Journal Information:
Nature Communications, Journal Name: Nature Communications Journal Issue: 1 Vol. 10; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (2)

Efficient All‐Optical Plasmonic Modulators with Atomically Thin Van Der Waals Heterostructures journal February 2020
All-optical modulation with 2D layered materials: status and prospects journal February 2020

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