Suavua ntejattosecond laser ntaus ntawvyog nyob rau hauv kev tsim kho
Lub attosecond tau dhau los ua cov cuab yeej tshiab rau cov kws tshawb fawb los tshawb txog lub ntiaj teb hluav taws xob."Rau cov kws tshawb fawb, kev tshawb fawb attosecond yog ib qho yuav tsum tau, nrog attosecond, ntau yam kev tshawb fawb hauv cov txheej txheem atomic dynamics yuav ua kom pom tseeb dua, tib neeg rau cov proteins lom, lub neej tshwm sim, atomic scale thiab lwm yam kev tshawb fawb muaj tseeb dua."Pan Yiming said.
Wei Zhiyi, tus kws tshawb fawb ntawm lub koom haum ntawm Physics ntawm Suav Academy ntawm Sciences, ntseeg hais tias kev nce qib ntawm cov teeb pom kev sib txuas los ntawm femtoseconds mus rau attoseconds tsis yog tsuas yog kev nce qib yooj yim hauv lub sijhawm teev, tab sis tseem ceeb tshaj, lub peev xwm ntawm tib neeg los kawm. Cov qauv ntawm cov teeb meem, los ntawm kev txav ntawm atoms thiab molecules mus rau sab hauv ntawm atoms, tuaj yeem ntes cov kev txav ntawm electrons thiab cov cwj pwm cuam tshuam, uas tau ua rau muaj kev hloov pauv loj hauv kev tshawb fawb physics.Nws yog ib qho ntawm cov hom phiaj tseem ceeb ntawm kev tshawb fawb uas tib neeg nrhiav kom raug ntsuas qhov kev txav ntawm electrons, paub txog kev nkag siab ntawm lawv lub cev, thiab tom qab ntawd tswj hwm tus cwj pwm dynamic ntawm electrons hauv atoms.Nrog attosecond pulses, peb muaj peev xwm ntsuas thiab txawm manipulate ib tug neeg microscopic hais, thiab yog li ua ntau yam tseem ceeb thiab thawj kev soj ntsuam thiab piav qhia ntawm lub microscopic ntiaj teb no, lub ntiaj teb no dominated los ntawm quantum mechanics.
Txawm hais tias qhov kev tshawb fawb no tseem nyob deb me ntsis ntawm cov pej xeem, qhov kev tawm tsam ntawm "npauj npaim tis" yuav ua rau muaj kev tuaj txog ntawm kev tshawb fawb "cua daj cua dub".Hauv Suav teb, attosecondlaserCov kev tshawb fawb ntsig txog tau suav nrog hauv lub teb chaws txoj kev loj hlob tseem ceeb, cov kev sim cuam tshuam tau tsim thiab cov cuab yeej tshawb fawb tau npaj tseg, yuav muab cov ntsiab lus tseem ceeb tshiab rau kev kawm ntawm attosecond dynamics, los ntawm kev soj ntsuam ntawm electron motion, ua qhov zoo tshaj plaws. "electron microscope" nyob rau yav tom ntej lub sij hawm daws teeb meem qeb.
Raws li cov ntaub ntawv pej xeem, ib qho attosecondlaser ntaus ntawvyog npaj rau ntawm Songshan Lake Materials Laboratory hauv Tuam Tshoj Guangdong-Hong Kong-Macao Greater Bay Area.Raws li cov lus ceeb toom, qhov chaw siab tshaj attosecond laser yog sib koom ua ke los ntawm lub koom haum ntawm Physics ntawm Suav Academy ntawm Sciences thiab Xiguang lub koom haum ntawm Suav Academy ntawm Sciences, thiab lub Songshan Lake Materials Laboratory koom nyob rau hauv kev tsim kho.Los ntawm lub siab pib taw tes tsim, kev tsim kho ntawm ib tug multi-beam kab chaw nres tsheb nrog siab repetition zaus, siab photon zog, siab flux thiab tsis tshua muaj luv luv mem tes dav muab ultrafine coherent hluav taws xob nrog lub luv luv mem tes dav tsawg dua 60as thiab lub siab tshaj photon zog. mus rau 500ev, thiab tau nruab nrog cov ntawv thov kev tshawb fawb sib tham, thiab cov kev qhia dav dav xav kom ua tiav cov thawj coj thoob ntiaj teb tom qab ua tiav.
Post lub sij hawm: Jan-23-2024