Nobel Laureate Tshawb Lub Ntiaj Teb Tshiab Nrog Attosecond Laser Pulses

Tsis ntev los no, Dr. Anne L'Huillier, ib tug ntawm xyoo tas los Nobel Prize winners nyob rau hauv physics, thiab lwm yam kev tshawb fawb, xws li physicist Dr. Jan Vogelsang ntawm University of Oldenburg, siv attosecond laser pulses nrog ib tug photoelectron microscope (PEEM) ua raws. cov dynamics ntawm electrons tso tawm ntawm qhov chaw ntawm zinc oxide crystals. Kev tshawb fawb ntxiv qhia txog kev siv hluav taws xob ntawm attosecond laser pulse txheej txheem hauv thaj chaw ntawm nanomaterials thiab cov hnub ci tshiab.
Tus yeej Nobel nqi zog tshawb nrhiav "lub ntiaj teb tshiab" nrog attosecond laser pulses
Lub thiaj li hu ua Extreme Ultraviolet (EUV) attosecond laser pulse yog ib hom tshwj xeeb ntawm laser mem tes nrog lub wavelength nyob rau hauv lub siab Ultraviolet (EUV) band thiab lub sij hawm luv luv ntawm attoseconds, uas yog ib qho ceev tshaj plaws paub units ntawm lub sij hawm. Yog li ntawd, attosecond pulses yog lub sij hawm daws teeb meem heev thiab muaj peev xwm ntes tau cov txheej txheem ceev heev lossis cov xwm txheej ib ntus.
Rau huab cua ultraviolet attosecond laser pulses, lawv tiam yuav tsum tau siv cov lasers siab zog thiab ib tug series ntawm mem tes compression thiab amplification cov tswv yim. Xws li laser pulses muaj ntau yam kev siv hauv kev tshawb fawb, kev ntsuas siab, thiab cov ntaub ntawv tshawb fawb. Piv txwv li, nws tuaj yeem siv los kawm txog cov txheej txheem dynamic ntawm cov tshuaj tiv thaiv, kev coj tus cwj pwm hauv cov khoom siv, thiab lwm yam.
Tam sim no luam tawm nyob rau hauv lub scientific journal Advanced Physical Research, cov kws tshawb fawb tau ua tiav ua ke attosecond microscopy thiab photoemission electron microscopy yam tsis muaj kev daws teeb meem ntawm lub cev los yog spatial, thaum kawg paub txog kev siv attosecond laser pulses los kawm txog cov teeb meem sib cuam tshuam los ntawm kab rov tav thiab nanostructures.
Kev siv lub teeb ci uas muaj peev xwm ua kom muaj ntau qhov attosecond mem tes flashes ib ob (qhov no, 200,000 lub teeb pulses ib ob) yog ib qho ntawm qhov ua rau qhov no ua tau. Cov kws tshawb fawb muaj peev xwm kawm txog tus cwj pwm ntawm lub flashes yam tsis muaj kev cuam tshuam rau ib leeg vim tias txhua lub flash tso tawm qhov nruab nrab ntawm ib qho hluav taws xob los ntawm lub ntsej muag ntawm lub ntsej muag. Qhov ntau pulses generated ib ob, qhov yooj yim dua nws yog rho me me ntsuas teeb liab los ntawm cov ntaub ntawv teev.