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 ntawm Kev Tshawb Fawb, tau tsim ib qho kev ua haujlwm thiab ntse terahertz electro-optic modulator vam khom nyob rau hauv lub xeev siab magnetic teb sim. ntaus ntawv. 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 tshaj plaws thiab cov ntawv thov dav dav, nws daim ntawv thov engineering tseem raug txwv los ntawm kev tsim cov khoom siv terahertz thiab terahertz Cheebtsam. Ntawm lawv, kev ua haujlwm thiab ntse tswj ntawm terahertz nthwv dej los ntawm sab nraud yog ib qho kev tshawb fawb tseem ceeb hauv daim teb no.
Lub hom phiaj ntawm kev tshawb fawb txog kev txiav txim siab ntawm terahertz core Cheebtsam, Pab pawg tshawb fawb tau tsim lub terahertz stress modulator raws li cov khoom siv ob sab graphene [Adv. Optical Mater. 6, 1700877(2018)], Terahertz broadband photocontrolled modulator raws li cov oxide muaj zog [ACS Appl. Mater. Inter. 12, Tom qab 48811(2020)] thiab phonon-raws li tshiab ib zaus sib nqus-tswj terahertz qhov chaw [Advanced Science 9, 2103229(2021)], cov khoom siv hluav taws xob txuam nrog vanadium dioxide zaj duab xis raug xaiv los ua cov txheej txheem ua haujlwm, ntau txheej txheej kev tsim thiab kev tswj hluav taws xob tau txais yuav. Multifunctional active modulation ntawm terahertz kis tau tus mob, xav txog thiab nqus tau tiav (Daim duab a). Cov txiaj ntsig tau pom tias ntxiv rau qhov kev xa tawm thiab kev nqus dej, qhov kev cuam tshuam thiab kev cuam tshuam ntawm qhov cuam tshuam kuj tseem tuaj yeem tswj hwm los ntawm cov hluav taws xob hluav taws xob, nyob rau hauv uas qhov kev cuam tshuam qhov tob tuaj yeem ncav cuag 99.9% thiab cov theem kev xav tuaj yeem ncav cuag ~ 180o modulation (Daim duab b) . Ntau qhov nthuav, kom ua tiav kev tswj xyuas hluav taws xob terahertz ntse, cov kws tshawb fawb tau tsim cov cuab yeej tshiab "terahertz - hluav taws xob-terahertz" tawm tswv yim voj (Daim duab c). Txawm hais tias qhov kev hloov pauv ntawm qhov pib thiab ib puag ncig sab nraud, lub cuab yeej ntse tuaj yeem ncav cuag qhov teeb tsa (kwv yees) terahertz tus nqi hloov pauv hauv li 30 vib nas this.
(a) Schematic daim duab ntawm ibelectro optic modulatorraws li VO2
(b) Kev hloov pauv ntawm kev xa tawm, kev cuam tshuam, kev nqus dej thiab kev xav txog theem nrog kev txaus siab tam sim no
(c) schematic daim duab ntawm kev txawj ntse tswj
Txoj kev loj hlob ntawm ib tug nquag thiab ntse terahertzelectro-optic modulatorraws li cov khoom siv hluav taws xob sib txuas muab lub tswv yim tshiab rau kev ua tiav ntawm terahertz ntse tswj. Txoj haujlwm no tau txhawb nqa los ntawm National Key Research thiab Development Program, National Natural Science Foundation thiab High Magnetic Field Laboratory Direction Fund ntawm Anhui Xeev.
Post lub sij hawm: Aug-08-2023