Tuam Tshoj thawj lub tshuab laser attosecond tab tom tsim kho

Suav tebthawj zaugattosecond laser ntaus ntawvtab tom tsim kho

Lub attosecond tau dhau los ua ib lub cuab yeej tshiab rau cov kws tshawb fawb los tshawb nrhiav lub ntiaj teb hluav taws xob. "Rau cov kws tshawb fawb, kev tshawb fawb attosecond yog qhov yuav tsum muaj, nrog attosecond, ntau qhov kev sim tshawb fawb hauv cov txheej txheem dynamics atomic scale yuav meej dua, tib neeg rau cov protein biological, lub neej tshwm sim, atomic scale thiab lwm yam kev tshawb fawb cuam tshuam kom raug dua." Pan Yiming hais.

Wei Zhiyi, ib tug kws tshawb fawb ntawm Lub Tsev Kawm Ntawv Qib Siab ntawm Lub Tsev Kawm Ntawv Qib Siab Suav, ntseeg tias kev nce qib ntawm lub teeb ci ntsa iab los ntawm femtoseconds mus rau attoseconds tsis yog tsuas yog kev nce qib yooj yim hauv lub sijhawm xwb, tab sis qhov tseem ceeb tshaj, lub peev xwm ntawm tib neeg los kawm txog cov qauv ntawm cov khoom, los ntawm kev txav mus los ntawm cov atoms thiab cov molecules mus rau sab hauv ntawm cov atoms, tuaj yeem ntes tau kev txav mus los ntawm cov electrons thiab kev coj cwj pwm cuam tshuam, uas tau ua rau muaj kev hloov pauv loj hauv kev tshawb fawb txog physics yooj yim. Nws yog ib qho ntawm cov hom phiaj tseem ceeb ntawm kev tshawb fawb uas tib neeg ua raws li kev ntsuas qhov kev txav mus los ntawm cov electrons, paub txog kev nkag siab txog lawv cov khoom siv lub cev, thiab tom qab ntawd tswj hwm tus cwj pwm dynamic ntawm cov electrons hauv cov atoms. Nrog attosecond pulses, peb tuaj yeem ntsuas thiab txawm tias tswj cov khoom me me, thiab yog li ua rau muaj kev soj ntsuam thiab piav qhia ntxiv txog lub ntiaj teb me me, lub ntiaj teb uas muaj quantum mechanics tswj hwm.

Txawm hais tias qhov kev tshawb fawb no tseem nyob deb me ntsis ntawm cov pej xeem, qhov kev pib ntawm "tis npauj npaim" yuav ua rau muaj kev tshawb fawb "cua daj cua dub". Hauv Suav teb, attosecondlaserKev tshawb fawb cuam tshuam tau suav nrog hauv kev coj ua tseem ceeb hauv tebchaws, lub kaw lus sim cuam tshuam tau tsim thiab cov cuab yeej tshawb fawb tau npaj tseg, yuav muab txoj hauv kev tshiab tseem ceeb rau kev kawm txog attosecond dynamics, los ntawm kev soj ntsuam ntawm kev txav mus los ntawm hluav taws xob, dhau los ua "electron microscope" zoo tshaj plaws hauv pawg kev daws teeb meem lub sijhawm yav tom ntej.

Raws li cov ntaub ntawv pej xeem, ib tug neeg raug liamlub cuab yeej lasertab tom npaj yuav tsim lub chaw kuaj mob Songshan Lake Materials Laboratory hauv thaj chaw Guangdong-Hong Kong-Macao Greater Bay Area hauv Suav teb. Raws li cov lus ceeb toom, lub chaw siv laser attosecond siab heev no yog tsim los ntawm lub koom haum Institute of Physics ntawm Chinese Academy of Sciences thiab Xiguang Institute ntawm Chinese Academy of Sciences, thiab Songshan Lake Materials Laboratory koom nrog kev tsim kho. Los ntawm kev tsim qauv pib siab, kev tsim kho ntawm ntau lub chaw nres tsheb kab nrog zaus rov ua dua siab, lub zog photon siab, flux siab thiab qhov dav pulse luv heev muab cov hluav taws xob sib xws ultrafine nrog qhov dav pulse luv tshaj plaws tsawg dua 60as thiab lub zog photon siab tshaj plaws txog li 500ev, thiab tau nruab nrog lub platform tshawb fawb thov sib xws, thiab cov ntsuas ntsuas tiav yuav tsum ua tiav tus thawj coj thoob ntiaj teb tom qab ua tiav.