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Электронный каталог: Chiglintsev, E. - Spectral Characterization of a Zwitterionic Kainate Crystal for Terahertz Generation
Chiglintsev, E. - Spectral Characterization of a Zwitterionic Kainate Crystal for Terahertz Generation
Статья
Автор: Chiglintsev, E.
Optical Materials: Spectral Characterization of a Zwitterionic Kainate Crystal for Terahertz Generation
б.г.
ISBN отсутствует
Автор: Chiglintsev, E.
Optical Materials: Spectral Characterization of a Zwitterionic Kainate Crystal for Terahertz Generation
б.г.
ISBN отсутствует
На полку
Статья
Chiglintsev, E.
Spectral Characterization of a Zwitterionic Kainate Crystal for Terahertz Generation / E.Chiglintsev, N.M.Belozerova, [a.o.]. – Text : electronic // Optical Materials. – 2026. – Vol. 180. – P. 118471. – URL: https://doi.org/10.1016/j.optmat.2026.118471. – Bibliogr.: 48.
Organic kainate is an emerging *x&sup(2) crystal for broadband terahertz (THz) emission. This study presents an experimental characterization of its THz performance using time-domain spectroscopy (TDS). We determined the complex refractive index and frequency-dependent coherence length. With a 17 fs pump pulse, the generated THz spectrum extends to ∼7 THz, while maintaining constant fluence (∼7.8 mJ/cm&sup(2)) and increasing pulse duration to 100 fs reduces the peak field amplitude proportionally to 1/*t and narrows the spectral bandwidth. By combining the experimentally derived absorption coefficient with Raman spectroscopy and DFT-calculated phonon modes, we identify phonon-limited absorption notches between 2 and 5 THz and a low-loss transmission window around 1.5 THz. Comparative analysis reveals that aged crystals (∼6 months) exhibit reduced THz bandwidth (∼4 THz) compared to fresh crystals (∼7 THz), indicating that environmental degradation—particularly humidity—rather than intrinsic material limitations constitutes the immediate bandwidth constraint. These insights, combined with the material's favorable and scalable growth process, provide a clear pathway for optimizing kainate crystals toward their full potential for THz applications.
Спец.(статьи,препринты) = С 36 - Физика твердого тела$
Спец.(статьи,препринты) = С 350 - Приложения методов ядерной физики в смежных областях
Спец.(статьи,препринты) = С 37 - Оптика$
ОИЯИ = ОИЯИ (JINR)2026
Chiglintsev, E.
Spectral Characterization of a Zwitterionic Kainate Crystal for Terahertz Generation / E.Chiglintsev, N.M.Belozerova, [a.o.]. – Text : electronic // Optical Materials. – 2026. – Vol. 180. – P. 118471. – URL: https://doi.org/10.1016/j.optmat.2026.118471. – Bibliogr.: 48.
Organic kainate is an emerging *x&sup(2) crystal for broadband terahertz (THz) emission. This study presents an experimental characterization of its THz performance using time-domain spectroscopy (TDS). We determined the complex refractive index and frequency-dependent coherence length. With a 17 fs pump pulse, the generated THz spectrum extends to ∼7 THz, while maintaining constant fluence (∼7.8 mJ/cm&sup(2)) and increasing pulse duration to 100 fs reduces the peak field amplitude proportionally to 1/*t and narrows the spectral bandwidth. By combining the experimentally derived absorption coefficient with Raman spectroscopy and DFT-calculated phonon modes, we identify phonon-limited absorption notches between 2 and 5 THz and a low-loss transmission window around 1.5 THz. Comparative analysis reveals that aged crystals (∼6 months) exhibit reduced THz bandwidth (∼4 THz) compared to fresh crystals (∼7 THz), indicating that environmental degradation—particularly humidity—rather than intrinsic material limitations constitutes the immediate bandwidth constraint. These insights, combined with the material's favorable and scalable growth process, provide a clear pathway for optimizing kainate crystals toward their full potential for THz applications.
Спец.(статьи,препринты) = С 36 - Физика твердого тела$
Спец.(статьи,препринты) = С 350 - Приложения методов ядерной физики в смежных областях
Спец.(статьи,препринты) = С 37 - Оптика$
ОИЯИ = ОИЯИ (JINR)2026
