光通信技术2026，Vol.50Issue(2)：84-90,7.DOI:10.13921/j.cnki.issn1002-5561.2026.02.014
基于离子调控的液体太赫兹辐射增强与抑制
Enhancement and suppression of Terahertz radiation in liquids based on ion regulation
摘要
Abstract
To elucidate the mechanism of ion regulated liquid terahertz radiation,this study systematically investigated the ef-fects of Cl⁻,HCO₃⁻,Na⁺,and Ca²⁺ on terahertz radiation from femtosecond laser-induced water jets.By combining conductiv-ity and refractive index measurements with molecular dynamics simulations,the radiation behaviors in 0.1～0.6 mol/L NaCl,CaCl₂,NaHCO₃,and Ca(HCO₃)₂ solutions were revealed.Experimental results show that the radiation intensity of NaCl solu-tion at 0.5 mol/L is enhanced by 30％compared with that of pure water,while HCO₃⁻-containing systems exhibit significant ra-diation suppression starting from 0.2 mol/L,and the degree of suppression is negatively correlated with conductivity.Raising the temperature to 40 ℃ further amplifies the gain effect of NaCl solution.Cl⁻ enhances terahertz radiation by weakening the hydrogen bond network and improving carrier mobility,whereas HCO₃⁻ suppresses radiation by capturing free electrons.关键词
太赫兹辐射/飞秒激光/离子调控/氢键网络/分子动力学Key words
Terahertz radiation/femtosecond laser/ion control/hydrogen bond network/molecular dynamics分类
信息技术与安全科学引用本文复制引用
李立容,常超,贺广超,张勇..基于离子调控的液体太赫兹辐射增强与抑制[J].光通信技术,2026,50(2):84-90,7.基金项目
国家自然科学基金项目(61971208)资助. （61971208）
