Emission is then obtained at the difference frequency of the lasers, and this can be engineered to fall in the terahertz range. Terahertz spectroscopy has some important differences when compared ...

This paper proposes a general method for designing ultra-compact on-chip optical devices that can efficiently generate pre-designed complex wavefront vector beams (VOFs) under surface wave (SW) ...

By exciting a specific terahertz frequency vibrational mode, which displaces the crystal lattice along the coordinates of other modes in the material, we created a chiral state that survives for ...

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Jan. 30, 2025 — Researchers have developed a recyclable alternative to a durable class of plastics used for items like car tires, replacement hip joints and bowling ...