Organic Terahertz Crystals with Unusual Chlorinated Electron Donors
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Le résumé fourni par la source
Abstract Organic terahertz (THz) crystals with large optical nonlinearity and low phonon absorption are highly desirable for diverse THz applications. In this work, a novel molecular design strategy is introduced for developing high‐performance organic THz salt crystals by introducing highly polar chlorinated substituent into the electron donor (ED) units of nonlinear optical cationic chromophores, a modification typically avoided due to concerns over reduced microscopic optical nonlinearity, for the first time. Compared to crystals based on non‐chlorinated EDs, the newly designed chlorinated ED‐based crystals exhibit significantly improved structural properties including reduced void volume, higher crystal density, and enhanced multiple‐interionic interactions induced by chlorine substituents. These features lead to remarkably narrow and weak phonon absorption across the 0.5–2.2 THz range. Importantly, these crystals exhibit large microscopic and macroscopic optical nonlinearities, comparable to or exceeding those of non‐chlorinated analogs. As a result, they deliver outstanding THz wave generation performance with a 0.32 mm thick 3Cl‐OHQ‐T crystal achieving a peak‐to‐peak THz electric field approximately 16 times higher than that of a 1.0 mm thick ZnTe crystal under identical excitation condition with 130 fs pump pulses at 1140 nm. Furthermore, the THz generators based on chlorinated ED‐based crystals enable successful racemic detection of representative compounds.
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Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Organic Terahertz Crystals with Unusual Chlorinated Electron Donors
- Date Crossref
- 17/11/2025
- Éditeur
- Wiley
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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Kyonggi University Department of Chemistry pays non établi dans la noticeUniversité ou école supérieure
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Ajou University Department of Molecular Science and Technology pays non établi dans la noticeUniversité ou école supérieure
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Korea Advanced Institute of Science and Technology Department of Physics pays non établi dans la noticeUniversité ou école supérieure
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ZHAW Zurich University of Applied Sciences pays non établi dans la noticeUniversité ou école supérieure
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Institute of Computational Physics Zurich University of Applied Sciences (ZHAW) Winterthur 8401 Switzerland Institute of Computational Physics pays non établi dans la noticeUniversité ou école supérieure
Department of Chemistry — Kyonggi University, Department of Molecular Science and Technology — Ajou University et Department of Physics — Korea Advanced Institute of Science and Technology, avec 2 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.