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Updated: May 3, 2026

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy
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Complementary, down-shifted THz lines in PPLN via ordinary-polarized emission

Umit Demirbas, Alexandre Trisorio, Carlo Vicario

    Optics Letters
    |May 1, 2026
    PubMed
    Summary

    Researchers explored a new method for generating narrowband terahertz (THz) emission using the d22 nonlinear optical effect in periodically poled lithium niobate (PPLN). This approach offers complementary THz frequencies and enables polarization-selective THz spectroscopy.

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