Ib pawg ntawm cov kws tshawb fawb Suav tau tsim lub zog siv hluav taws xob tshiab, ultra-thin optical siv lead ua siv lub tswv yim tshiab uas ua rau lub hauv paus rau tiam tom ntej laser technology.
Cov twisted boron nitride tsim los ntawm pab neeg muaj ib tug tuab ntawm micrometers, ua rau lub ntiaj teb no lub thinnest paub kho qhov muag siv lead ua, xib fwb Wang Enge ntawm Peking University lub tsev kawm ntawv ntawm Physics tsis ntev los no hais rau Xinhua. Piv nrog cov qauv siv lead ua ntawm tib tuab, nws lub zog ua haujlwm tau nce 100 txog 10,000 zaug.
Wang, tus kws tshaj lij ntawm Suav Academy ntawm Kev Tshawb Fawb, tau hais tias cov txiaj ntsig yog thawj qhov kev tsim kho tshiab hauv Tuam Tshoj txoj kev xav ntawm cov khoom siv kho qhov muag thiab qhib qhov chaw tshiab ntawm kev ua cov khoom siv kho qhov muag los ntawm cov khoom siv hluav taws xob ob-dimensional nyias-zaj duab xis.
Cov txiaj ntsig tau tshawb fawb tsis ntev los no tau luam tawm hauv phau ntawv Journal Physical Review Letters.
Laser yog ib qho ntawm cov thev naus laus zis tseem ceeb ntawm cov ntaub ntawv hauv zej zog. Cov khoom siv kho qhov muag tuaj yeem paub txog cov haujlwm xws li kev hloov pauv zaus, parametric amplification, thiab teeb liab hloov kho, thiab yog cov khoom tseem ceeb ntawm cov khoom siv laser.
Hauv 60 xyoo dhau los, kev tshawb fawb thiab kev tsim kho cov khoom siv kho qhov muag tau raug coj los ntawm ob theem-txhim kho txoj kev xav tau los ntawm Asmeskas cov kws tshawb fawb.
Txawm li cas los xij, vim muaj kev txwv ntawm cov qauv theoretical cov qauv thiab cov khoom siv, cov khoom siv lead ua uas twb muaj lawm yog qhov nyuaj rau kev ua kom tau raws li qhov yuav tsum tau ua ntawm miniaturization, kev sib koom ua ke siab, thiab kev ua haujlwm ntawm cov khoom siv laser rau kev txhim kho yav tom ntej. Txoj kev loj hlob ntawm lwm tiam laser tshuab yuav tsum tau breakthroughs nyob rau hauv optical siv lead ua txoj kev xav thiab cov ntaub ntawv.
Wang Engo thiab Prof. Liu Kaihui, tus thawj coj ntawm lub koom haum ntawm Condensed Matter thiab Materials Physics, Lub Tsev Kawm Ntawv ntawm Physics, Peking University, tau coj ib pab neeg los tsim ib theem thib peb sib piv txoj kev xav raws li cov khoom siv teeb pom kev zoo - cov txheej txheem sib tw sib tw.
"Cov lasers uas tsim los ntawm cov khoom siv kho qhov muag tuaj yeem pom raws li tus kheej kab ntawm kev taug kev. Lub tshuab sib tw tuaj yeem ua rau cov kev taw qhia thiab kev sib tw ntawm txhua tus neeg sib koom ua ke, txhim kho lub zog hloov pauv ntawm lub zog ntawm laser," piav qhia Liu, uas kuj yog tus thawj coj. ntawm Lub Tsev Kawm Ntawv ntawm Lub Teeb Element Quantum Cov Khoom Sib Txuas ntawm Huairou National Integrated Science Center hauv Beijing.
Nws hais tias qhov kev tshawb fawb qhib tag nrho cov qauv tsim tshiab thiab cov khoom siv, ua kom paub txog tag nrho cov saw hlau ntawm thawj qhov kev tsim kho tshiab los ntawm qhov yooj yim optical theory mus rau cov ntaub ntawv tshawb fawb thiab thev naus laus zis.
"Lub thickness ntawm TBN muaju yog li ntawm 1 mus rau 10 micrometers. Feem ntau ntawm cov khoom siv kho qhov muag peb paub ua ntej muaj thicknesses ntawm qib ntawm ib millimeter lossis txawm centimeters," Liu ntxiv.
TBN ntau lawm technology yog tam sim no patented nyob rau hauv lub US, UK, Nyiv thiab lwm lub teb chaws. Pab pawg tau tsim cov qauv TBN lasers thiab ua haujlwm nrog cov tuam txhab los tsim cov tshuab laser txuas ntxiv mus.
"Optical crystals yog lub hauv paus ntawm laser technology kev loj hlob, thiab lub neej yav tom ntej ntawm laser technology yog txiav txim los ntawm tus tsim txoj kev xav thiab ntau lawm technology ntawm optical crystals," Wang said.
Nrog nws qhov loj me me, kev sib koom ua ke zoo heev, thiab cov haujlwm tshiab, TBN muaju yuav tsum paub txog cov ntawv thov tshiab rau yav tom ntej hauv thaj chaw xws li quantum light sources, photonic chips, thiab artificial txawj ntse.
