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Results for “Metasurfaces”
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Terahertz Metasurface Quantum-Cascade VECSELs: Theory and Performance
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THz time-domain characterization of amplifying quantum-cascade metasurface
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Ultrafast all-optical switching in III-V semiconductor metasurfaces.
Abstract not provided.
Frequency Conversion in a Time-Variant Dielectric Metasurface.
Abstract not provided.
Nonlinear Geometric Phase Gradient Metasurfaces beyond the Dipole Approximation.
Abstract not provided.
Ultrafast Diffraction Switching Using GaAs Metasurfaces.
Abstract not provided.
An All-Dielectric Polaritonic Metasurface with Giant Second-Order Nonlinear Response.
Abstract not provided.
Ultrafast Diffraction Switching in GaAs Metasurfaces using Quadrupole Resonances.
Abstract not provided.
Frequency Conversion in a Dielectric Time-Variant Metasurface.
Abstract not provided.
Characterizing the physical limitations of phase-only metasurface design for acoustic holograms.
Abstract not provided.
Introduction to Optical Metasurfaces : A short review/tutorial.
Abstract not provided.
High-efficiency optical limiter using metasurface and phase-change material
According to some aspects, a transmissive and all-dielectric optical component/limiter with great cutoff efficiency using Vanadium Dioxide (VO 2 ) as the active component is disclosed. In some embodiments, Vanadium dioxide is used for an optical limiter due to the large contrast in optical constants upon undergoing the semiconductor to metal phase transition. When triggered optically, this transition occurs within 60 fs, making the device suitable for an ultrafast laser environment. In addition, the phase transition threshold is tunable by applying stress or doping; therefore, the device cutoff intensity can be adjusted to fulfill specific requirements.
Phase to pattern inverse design paradigm for fast realization of functional metasurfaces via transfer learning.
Abstract not provided.