Abrupt lateral beam shifts from terahertz quasi-bound states in the continuum (IMAGE)

Science China Press

Abrupt lateral beam shifts from terahertz quasi-bound states in the continuum

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By leveraging quasi-bound states in the continuum (QBIC) band in a compound grating waveguide, the research team from Singapore and China observed abrupt lateral beam shifts in the terahertz regime. Real-space measurements of abrupt lateral beam shifts can reveal QBIC bands in momentum space.

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