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February 2, 2026Laser & Photonics Review

Plasmonic Hot‐Carrier Transfer in WO 3‐x –Bi 2 O 2 Se Heterostructures for Ultrafast Optical Switching

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Authors

JLJunting LiuHNHongkun NieYCYao Cheng

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Overview

Demonstrates enhanced nonlinear absorption in plasmonic heterostructures, indicating potential for faster optical devices.

Key Points

  • The research aims to develop a plasmonic heterostructure to improve nonlinear optical properties and reduce scattering losses in Bi2O2Se semiconductors.
  • Developed a WO3-x/Bi2O2Se plasmonic heterostructure
  • Utilized mode-locked lasers operating at 1040 nm
  • Conducted finite-difference time-domain (FDTD) simulations
  • Performed transient absorption spectroscopy
  • Executed open-aperture Z-scan measurements
  • Achieved ultrashort pulses of approximately 364 fs
  • Reduced absorbed pump threshold to 2.02 W
  • Increased average output power to 424 mW
  • Nonlinear absorption coefficient improved from -507 to -1587 cm MW-1
  • Shortened carrier lifetimes due to enhanced Auger recombination

Cite This Study

Liu et al. (2026) studied this question.

synapsesocial.com/papers/6980ffb4c1c9540dea8125e8https://doi.org/10.1002/lpor.202502525
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