Modulator-ka elektiroonigga ah ee firfircoon ee terahertz ee caqliga badan ayaa si guul leh loo sameeyay

Sannadkii hore, kooxda Sheng Zhigao, oo ah cilmi-baare ka tirsan Xarunta Sare ee Magnetic Field ee Machadka Hefei ee Sayniska Jirka, Akadeemiyada Sayniska Shiinaha, ayaa soo saartay qalab firfircoon oo terahertz electro-optic ah oo ku tiirsan qalabka tijaabada ah ee goobta magnetic-ga sare ee xaaladda deggan. Cilmi-baarista waxaa lagu daabacay ACS Applied Materials & Interfaces.

In kasta oo tignoolajiyada terahertz ay leedahay astaamo muuqaal oo heer sare ah iyo rajo ballaaran oo codsi, haddana codsigeeda injineernimo wali si weyn ayuu u xaddidan yahay horumarinta agabka terahertz iyo qaybaha terahertz. Kuwaas waxaa ka mid ah xakamaynta firfircoon iyo caqliga leh ee hirarka terahertz ee dibadda waa jihada cilmi-baarista muhiimka ah ee goobtan.

Iyadoo ujeedadu tahay jihada cilmi-baarista ee ugu dambeysa ee qaybaha asaasiga ah ee terahertz, Kooxda cilmi-baaristu waxay ikhtiraacday qalab wax lagu beddelo cadaadiska terahertz oo ku salaysan graphene-ka walxaha laba-geesoodka ah [Adv. Optical Mater. 6, 1700877(2018)], qalab wax lagu beddelo oo sawir-qaadis ah oo Terahertz ah oo ku salaysan oksaydhka xooggan ee la xidhiidha [ACS Appl. Mater. Inter. 12, Kadib 48811(2020)] iyo isha cusub ee hal-soo-noqoshada magnejiga ee lagu xakameeyo terahertz ee ku salaysan phonon [Sayniska Sare 9, 2103229(2021)], filimka vanadium dioxide ee la xidhiidha electron oxide ayaa la doortaa iyadoo lakabka shaqada, naqshadeynta qaab-dhismeedka lakabka badan iyo habka xakamaynta elektaroonigga ah la qaato. Qaab-dhismeedka firfircoon ee badan ee gudbinta terahertz, milicsiga iyo nuugista ayaa la gaaraa (Jaantuska a). Natiijooyinka waxay muujinayaan in marka laga soo tago gudbinta iyo nuugista, marxaladda milicsiga iyo milicsiga sidoo kale si firfircoon ayaa loogu nidaamin karaa goobta korontada, taas oo qoto-dheeraanta milicsiga ay gaari karto 99.9% iyo marxaladda milicsiga ay gaari karto ~180o modulation (Jaantuska b). Waxa xiiso leh, si loo gaaro xakamaynta korontada ee terahertz ee caqliga leh, cilmi-baarayaashu waxay naqshadeeyeen qalab leh wareeg jawaab celin ah oo cusub oo "terahertz - electric-terahertz" (Jaantuska c). Iyadoo aan loo eegin isbeddellada xaaladaha bilowga iyo deegaanka dibadda, qalabka casriga ah wuxuu si toos ah u gaari karaa qiimaha milicsiga terahertz ee la filayo (la filayo) qiyaastii 30 ilbiriqsi gudahood.

(a) Jaantuska jaantuska eemodulator-ka korontada indhahaku salaysan VO2

(b) isbeddellada gudbinta, milicsiga, nuugista iyo marxaladda milicsiga oo leh hadda la yaab leh

(c) jaantuska qaabaysan ee xakamaynta caqliga leh

Horumarinta terahertz firfircoon oo caqli badanmodulator-ka elektaroonigga ahIyada oo ku saleysan agabka elektaroonigga ah ee la xiriira, waxay bixisaa fikrad cusub oo loogu talagalay hirgelinta xakamaynta caqliga leh ee terahertz. Shaqadan waxaa taageeray Barnaamijka Cilmi-baarista Muhiimka ah iyo Horumarinta Qaranka, Hay'adda Sayniska Dabiiciga ah ee Qaranka iyo Sanduuqa Jihaynta Shaybaarka Goobta Magnetic-ga Sare ee Gobolka Anhui.