Active intelligent terahertz electro-optic modulator yapangidwa bwino

Chaka chatha, gulu la Sheng Zhigao, wofufuza pa High Magnetic Field Center ya Hefei Institute of Physical Sciences, Chinese Academy of Sciences, adapanga makina opangira ma terahertz anzeru komanso anzeru a terahertz electro-optic modulator kutengera kuyesa kwamphamvu kwa maginito. chipangizo.Kafukufukuyu adasindikizidwa mu ACS Applied Materials & Interfaces.

Ngakhale ukadaulo wa terahertz uli ndi mawonekedwe apamwamba kwambiri komanso chiyembekezo chogwiritsa ntchito kwambiri, ntchito yake yaukadaulo ikadali yocheperako popanga zida za terahertz ndi zida za terahertz.Pakati pawo, kuwongolera mwachangu komanso mwanzeru kwa mafunde a terahertz ndi gawo lakunja ndikofunikira pakufufuza kofunikira pankhaniyi.

Poyang'ana pa kafukufuku wotsogola wazinthu zazikuluzikulu za terahertz, Gulu lofufuza lapanga chosinthira cha terahertz chotengera ma graphene amitundu iwiri [Adv.Optical Mater.6, 1700877(2018)], Terahertz Broadband photocontrolled modulator yotengera oxide yogwirizana kwambiri [ACS Appl.Mater.Inter.12, Pambuyo pa 48811(2020)] ndi gwero latsopano la terahertz loyendetsedwa ndi phonon-frequency single-frequency controlled terahertz [Advanced Science 9, 2103229(2021)], filimu yokhudzana ndi electron oxide vanadium dioxide imasankhidwa ngati gawo logwira ntchito, lamitundu yambiri. mapangidwe ndi njira zowongolera zamagetsi zimatengedwa.Multifunctional yogwira kusinthasintha kwa terahertz kufala, kusinkhasinkha ndi kuyamwa kumatheka (Chithunzi a).Zotsatira zikuwonetsa kuti kuwonjezera pa kutumizirana ndi mayamwidwe, gawo lowunikira komanso lowunikira lithanso kuyendetsedwa mwachangu ndi gawo lamagetsi, momwe kuya kwa kusinthika kwa reflectivity kumatha kufika 99.9% ndipo gawo lowunikira limatha kufikira ~ 180o modulation (Chithunzi b) .Chochititsa chidwi kwambiri, kuti akwaniritse mphamvu zamagetsi za terahertz zanzeru, ofufuzawo adapanga chipangizo chokhala ndi buku la "terahertz - electric-terahertz" feedback loop (Chithunzi c).Mosasamala kanthu za kusintha komwe kumayambira komanso malo akunja, chipangizo chanzeru chimatha kungofika pamtengo (woyembekezeredwa) wa terahertz modulation mumasekondi pafupifupi 30.

(a) Chithunzi chojambula chaelectro optic modulekutengera VO2

(b) kusintha kwa transmittance, reflectivity, mayamwidwe ndi kusinkhasinkha gawo ndi chidwi panopa

(c) Chiwonetsero chadongosolo lanzeru

Kukula kwa terahertz yogwira komanso yanzeruelectro-optic modulekutengera zida zamagetsi zomwe zimagwirizana zimapereka lingaliro latsopano pakukwaniritsidwa kwa kuwongolera kwanzeru kwa terahertz.Ntchitoyi inathandizidwa ndi National Key Research and Development Programme, National Natural Science Foundation ndi High Magnetic Field Laboratory Direction Fund ya Anhui Province.