Xyoo tas los, pab pawg ntawm Sheng Zhigao, tus kws tshawb fawb ntawm High Magnetic Field Center ntawm Hefei Institute of Physical Sciences, Suav Academy of Sciences, tau tsim ib lub terahertz electro-optic modulator uas nquag thiab ntse siv lub cuab yeej sim magnetic field siab. Cov kev tshawb fawb tau luam tawm hauv ACS Applied Materials & Interfaces.
Txawm hais tias terahertz thev naus laus zis muaj cov yam ntxwv zoo dua thiab muaj kev cia siab dav dav, nws daim ntawv thov engineering tseem raug txwv los ntawm kev tsim cov ntaub ntawv terahertz thiab cov khoom terahertz. Ntawm lawv, kev tswj hwm terahertz nthwv dej los ntawm sab nraud yog qhov kev tshawb fawb tseem ceeb hauv daim teb no.
Lub hom phiaj ntawm kev tshawb fawb tshiab ntawm cov khoom tseem ceeb ntawm terahertz, pab pawg tshawb fawb tau tsim lub terahertz stress modulator raws li cov khoom siv ob-seem graphene [Adv. Optical Mater. 6, 1700877 (2018)], lub Terahertz broadband photocontrolled modulator raws li cov oxide uas muaj feem cuam tshuam [ACS Appl. Mater. Inter. 12, Tom qab 48811 (2020)] thiab phonon-based tshiab ib-zaus magnetic-controlled terahertz qhov chaw [Advanced Science 9, 2103229 (2021)], cov yeeb yaj kiab electron oxide vanadium dioxide cuam tshuam raug xaiv ua txheej txheej ua haujlwm, kev tsim qauv ntau txheej thiab txoj kev tswj hwm hluav taws xob tau txais yuav. Kev hloov pauv ntau yam ntawm terahertz kis, kev xav thiab kev nqus tau ua tiav (Daim Duab a). Cov txiaj ntsig qhia tau tias ntxiv rau qhov kev xa tawm thiab kev nqus, qhov kev cuam tshuam thiab kev cuam tshuam theem kuj tseem tuaj yeem tswj hwm los ntawm lub zog hluav taws xob, uas qhov tob ntawm kev cuam tshuam tuaj yeem ncav cuag 99.9% thiab theem kev cuam tshuam tuaj yeem ncav cuag ~ 180o kev hloov pauv (Daim Duab b). Qhov nthuav ntau dua, kom ua tiav kev tswj hwm hluav taws xob terahertz ntse, cov kws tshawb fawb tau tsim ib lub cuab yeej nrog lub voj voog tshiab "terahertz - hluav taws xob-terahertz" (Daim Duab c). Txawm hais tias muaj kev hloov pauv hauv cov xwm txheej pib thiab ib puag ncig sab nraud, lub cuab yeej ntse tuaj yeem ncav cuag qhov teeb tsa (xav tau) terahertz modulation tus nqi hauv li 30 vib nas this.
(a) Daim duab qhia txog ib qhoelectro optic modulatorraws li VO2
(b) kev hloov pauv ntawm kev xa mus, kev cuam tshuam, kev nqus thiab theem kev cuam tshuam nrog cov tam sim no uas raug cuam tshuam
(c) daim duab qhia txog kev tswj hwm ntse
Kev txhim kho ntawm lub terahertz nquag thiab ntseelectro-optic modulatorraws li cov ntaub ntawv hluav taws xob cuam tshuam muab lub tswv yim tshiab rau kev paub txog kev tswj hwm ntse terahertz. Txoj haujlwm no tau txais kev txhawb nqa los ntawm National Key Research and Development Program, National Natural Science Foundation thiab High Magnetic Field Laboratory Direction Fund ntawm Anhui Province.
Lub sijhawm tshaj tawm: Lub Yim Hli-08-2023