Cov thev naus laus zis thiab kev txhim kho tiam sis ntawm attosecond lasers hauv Suav teb
Lub koom haum ntawm Physics, Suav Academy ntawm Sciences, tau tshaj tawm cov kev ntsuas ntawm 160 raws li cais attosecond pulses nyob rau hauv 2013. Cov isolated attosecond pulses (IAPs) ntawm pab neeg tshawb fawb no tau tsim los ntawm high-order harmonics tsav los ntawm sub-5 femtosecond laser pulses stabilized los ntawm CEP. Cov yam ntxwv ntawm lub cev ntawm attosecond pulses tau pom los ntawm attosecond stretch spectroscopy. Cov txiaj ntsig tau pom tias qhov beamline no tuaj yeem muab cov pulses cais tawm nrog lub sijhawm mem tes ntawm 160 attoseconds thiab nruab nrab wavelength ntawm 82eV. Pab neeg no tau ua tiav hauv attosecond source tiam thiab attosecond stretching spectroscopy technology. Ultraviolet lub teeb pom kev zoo nrog attosecond daws teeb meem tseem yuav qhib cov ntawv thov tshiab rau cov teeb meem physics. Xyoo 2018, Lub Tsev Kawm Ntawv ntawm Physics, Suav Academy ntawm Kev Tshawb Fawb, kuj tau tshaj tawm txoj kev npaj tsim kho rau kev ntsuas kev ntsuas tus neeg siv lub sijhawm ntev heev uas suav nrog qhov chaw teeb pom kev thib ob nrog ntau lub ntsuas ntsuas. Qhov no yuav ua rau cov kws tshawb fawb los ua qhov hloov tau yooj yim attosecond rau femtosecond lub sij hawm daws teeb meem ntawm cov txheej txheem ultrafast hauv teeb meem, thaum tseem muaj lub zog thiab kev daws teeb meem. Thiab nws tso cai rau cov kws tshawb fawb tshawb nrhiav thiab tswj cov microscopic ultrafast hluav taws xob hluav taws xob hauv cov atoms, molecules, nto thiab cov khoom siv ntau. Qhov no thaum kawg yuav ua rau txoj hauv kev rau kev nkag siab thiab siv cov xwm txheej macroscopic ntsig txog ntau yam kev tshawb fawb xws li physics, chemistry thiab biology.
Xyoo 2020, Huazhong University of Science thiab Technology tau thov kom siv txhua txoj hauv kev kho qhov muag los ntsuas kom raug thiab rov tsim kho cov pulses thib ob los ntawm zaus daws teeb meem kho qhov muag tshuab. Xyoo 2020, Suav Academy ntawm Kev Tshawb Fawb kuj tau tshaj tawm tias nws tau ua tiav kev sib cais attosecond pulses los ntawm shaping lub femtosecond mem tes photoelectric teb los ntawm kev siv dual-light selective pass-gate technology. Hauv xyoo 2023, ib pab neeg los ntawm National University of Defense Technology tau npaj cov txheej txheem PROOF sai, hu ua qPROOF, rau tus cwj pwm ntawm ultra-wideband cais cov pulses thib ob.
Xyoo 2025, cov kws tshawb fawb los ntawm Suav Academy ntawm Kev Tshawb Fawb hauv Shanghai tau tsim cov tshuab laser synchronization raws li kev ua haujlwm ntawm nws tus kheej ua lub sijhawm synchronization, ua kom lub sijhawm ntsuas qhov ntsuas siab thiab lub sijhawm tawm tswv yim ntawm picosecond lasers. Qhov no tsis tsuas yog tswj lub sijhawm ntawm lub sijhawm jitter nyob rau hauv qhov attosecond range, tab sis kuj txhim kho kev ntseeg siab ntawm lub laser system thaum lub sijhawm ua haujlwm ntev. Cov kev tshuaj ntsuam thiab kev tswj xyuas tsim tau tuaj yeem kho lub sijhawm tiag tiag rau lub sijhawm jitter. Nyob rau hauv tib lub xyoo, cov kws tshawb fawb kuj tau siv cov relativistic siv spacetime vortices (STOV) lasers los tsim cais attosecond gamma-ray pulses nqa lateral orbital angular momentum.
Lub teb ntawm attosecond lasers yog nyob rau hauv ib lub sij hawm ntawm kev loj hlob sai, npog ntau yam los ntawm kev tshawb fawb yooj yim mus rau daim ntawv thov nce qib. Los ntawm kev siv zog ntawm pab pawg tshawb fawb, kev tsim kho vaj tse, kev txhawb nqa ntawm lub teb chaws txoj cai, thiab kev koom tes hauv tsev thiab thoob ntiaj teb thiab kev sib pauv, Tuam Tshoj txoj kev teeb tsa hauv thaj tsam ntawm attosecond lasers yuav txaus siab rau txoj kev loj hlob dav dav. Raws li ntau lub tsev kawm ntawv qib siab thiab cov tsev kawm tshawb fawb koom nrog kev tshawb fawb ntawm attosecond lasers, ib pab pawg ntawm cov txuj ci tshawb fawb txog kev tshawb fawb nrog rau kev pom thoob ntiaj teb thiab kev muaj peev xwm tshiab yuav raug cog qoob loo, txhawb txoj kev loj hlob ntawm attosecond science. Lub National Attosecond loj qhov chaw tshawb fawb tseem yuav muab cov kev tshawb fawb ua thawj coj rau cov zej zog kev tshawb fawb thiab ua kom muaj txiaj ntsig ntau dua rau kev nce qib ntawm kev tshawb fawb thiab thev naus laus zis.
Post lub sij hawm: Aug-26-2025