Ngonyaka odlule, ithimba lika-Sheng Zhigao, umcwaningi e-High Magnetic Field Center ye-Hefei Institute of Physical Sciences, i-Chinese Academy of Sciences, lenze imodulator esebenzayo nehlakaniphile ye-terahertz ye-electro-optic encike ekuhloleni kwenkundla kazibuthe ephezulu. idivayisi. Ucwaningo lushicilelwe ku-ACS Applied Materials & Interfaces.
Nakuba ubuchwepheshe be-terahertz bunezici ezivelele ze-spectral kanye namathemba okusebenza abanzi, ukusetshenziswa kwabo kobunjiniyela kusalinganiselwe kakhulu ukuthuthukiswa kwezinto ze-terahertz nezingxenye ze-terahertz. Phakathi kwazo, ukulawulwa okusebenzayo nokukhaliphile kwegagasi le-terahertz ngomkhakha wangaphandle kuyisiqondiso esibalulekile socwaningo kulo mkhakha.
Liqondise esiqondisweni socwaningo esisezingeni eliphezulu sezingxenye eziyinhloko ze-terahertz, Ithimba labacwaningi lisungule imoduli yokucindezeleka ye-terahertz esekelwe ku-graphene yezinto ezinezinhlangothi ezimbili [Adv. I-Optical Mater. 6, 1700877(2018)], imodyuli elawulwa yisithombe se-Broadband ye-Terahertz esekelwe ku-oxide ehlobene kakhulu [i-ACS Appl. UMater. Inter. 12, Ngemva kuka-48811(2020)] kanye nomthombo omusha we-terahertz osuselwe kuphonon-imvamisa eyodwa [Advanced Science 9, 2103229(2021)], ifilimu ehlobene ye-electron oxide vanadium dioxide ikhethwa njengongqimba olusebenzayo, uhlaka olunezendlalelo eziningi. ukwakheka kanye nendlela yokulawula ye-elekthronikhi iyamukelwa. Ukuguquguquka okusebenzayo okusebenzayo kokudluliswa kwe-terahertz, ukuboniswa nokumuncwa kufinyelelwa (Umfanekiso a). Imiphumela ibonisa ukuthi ngaphezu kokudluliswa nokumuncwa, isigaba se-reflection kanye ne-reflection singaphinda silawulwe ngenkuthalo inkambu kagesi, lapho ukujula kwe-reflection modulation kungafinyelela ku-99.9% futhi isigaba sokubonisa singafinyelela ~ 180o modulation (Figure b) . Okuthakazelisa nakakhulu, ukuze kuzuzwe isilawuli sikagesi se-terahertz ehlakaniphile, abacwaningi baklame idivayisi enenoveli ethi "terahertz - electric-terahertz" feedback loop (Figure c). Kungakhathaliseki ukuthi yiziphi izinguquko ezimweni zokuqala nendawo yangaphandle, idivayisi ehlakaniphile ingafinyelela ngokuzenzakalelayo inani (elilindelwe) lokushintshwa kwe-terahertz cishe imizuzwana engu-30.
(a) Umdwebo wohlelo lwe-i-electro optic modulengokusekelwe ku-VO2
(b) izinguquko zokudluliswa, ukubukeka, ukumuncwa kanye nesigaba sokubonisa ngamasinga ahlaba umxhwele
(c) umdwebo wohlelo lokulawula okuhlakaniphile
Ukuthuthukiswa kwe-terahertz esebenzayo nehlakaniphilei-electro-optic moduleokusekelwe ezintweni eziphathelene ne-elekthronikhi kunikeza umbono omusha wokufezekiswa kokulawula okuhlakaniphile kwe-terahertz. Lo msebenzi usekelwe Uhlelo Lukazwelonke Lokucwaninga Nokuthuthukiswa Okubalulekile, i-National Natural Science Foundation kanye ne-High Magnetic Field Laboratory Direction Fund yesiFundazwe sase-Anhui.
Isikhathi sokuthumela: Aug-08-2023