Cov thev naus laus zis thiab kev txhim kho ntawm attosecond lasers hauv Suav teb

Cov qauv siv thev naus laus zis thiab kev loj hlob ntawmcov lasers attosecondnyob rau hauv Suav teb

Lub Koom Haum Saib Xyuas Physics, Suav Academy of Sciences, tau tshaj tawm cov txiaj ntsig ntsuas ntawm 160 ua cov pulses attosecond cais tawm hauv xyoo 2013. Cov pulses attosecond cais tawm (IAPs) ntawm pab pawg tshawb fawb no tau tsim los ntawm kev sib raug zoo siab uas tsav los ntawm sub-5 femtosecond laser pulses stabilized los ntawm CEP, nrog rau qhov rov ua dua ntawm 1 kHz. Cov yam ntxwv ntawm lub sijhawm ntawm attosecond pulses tau piav qhia los ntawm attosecond stretch spectroscopy. Cov txiaj ntsig qhia tau tias cov kab no tuaj yeem muab cov pulses attosecond cais tawm nrog lub sijhawm pulse ntawm 160 attoseconds thiab qhov nruab nrab ntawm wavelength ntawm 82eV. Pab pawg tau ua tiav kev tshawb fawb hauv kev tsim attosecond qhov chaw thiab attosecond stretching spectroscopy thev naus laus zis. Cov teeb pom kev zoo ultraviolet nrog attosecond daws teeb meem kuj tseem yuav qhib cov teb tshiab rau kev siv physics condensed matter. Xyoo 2018, Lub Koom Haum Saib Xyuas Physics, Suav Academy of Sciences, kuj tau tshaj tawm txog txoj kev npaj tsim kho rau lub cuab yeej siv ntsuas lub sijhawm ultrafast uas sib xyaw cov teeb pom kev zoo attosecond nrog ntau yam ntsuas. Qhov no yuav ua rau cov kws tshawb fawb muaj peev xwm ua qhov kev ntsuas hloov pauv ntawm attosecond mus rau femtosecond lub sijhawm daws teeb meem ntawm cov txheej txheem ultrafast hauv cov khoom, thaum tseem muaj lub zog thiab kev daws teeb meem spatial. Thiab nws tso cai rau cov kws tshawb fawb tshawb nrhiav thiab tswj cov microscopic ultrafast electronic dynamics hauv atoms, molecules, surfaces thiab bulk solid materials. Qhov no thaum kawg yuav ua rau txoj hauv kev rau kev nkag siab thiab siv cov xwm txheej macroscopic cuam tshuam nrog ntau yam kev tshawb fawb xws li physics, chemistry thiab biology.

Xyoo 2020, Huazhong University of Science and Technology tau tawm tswv yim siv txoj hauv kev kho qhov muag tag nrho los ntsuas thiab rov tsim cov attosecond pulses kom raug los ntawm kev siv thev naus laus zis optical gating uas daws tau zaus. Xyoo 2020, Suav Academy of Sciences kuj tau tshaj tawm tias nws tau ua tiav tsim cov attosecond pulses cais los ntawm kev tsim cov femtosecond pulse photoelectric teb los ntawm kev siv cov thev naus laus zis dual-light selective pass-gate. Xyoo 2023, ib pab neeg los ntawm National University of Defense Technology tau tawm tswv yim txog cov txheej txheem PROOF sai, hu ua qPROOF, rau kev piav qhia txog cov ultra-wideband isolated attosecond pulses.

Xyoo 2025, cov kws tshawb fawb los ntawm Suav Academy of Sciences hauv Shanghai tau tsimlaserthev naus laus zis sib dhos raws li lub kaw lus sib dhos lub sijhawm sib dhos uas tau tsim los ntawm nws tus kheej, ua kom muaj kev ntsuas lub sijhawm sib dhos siab thiab kev tawm tswv yim tiag tiag ntawm picosecond lasers. Qhov no tsis yog tsuas yog tswj lub sijhawm sib dhos ntawm lub kaw lus hauv qhov ntau ntawm attosecond xwb tab sis kuj txhim kho kev ntseeg siab ntawmlub tshuab laserthaum lub sijhawm ua haujlwm ntev. Lub kaw lus tshuaj xyuas thiab tswj hwm uas tau tsim kho tuaj yeem ua qhov kho kom raug rau lub sijhawm jitter. Hauv tib lub xyoo, cov kws tshawb fawb kuj tau siv cov lasers relativistic intensity spacetime vortices (STOV) los tsim cov pulses gamma-ray attosecond cais uas nqa lub zog lateral orbital angular momentum.

Lub teb ntawm attosecond lasers nyob rau lub sijhawm ntawm kev loj hlob sai, npog ntau yam los ntawm kev tshawb fawb yooj yim mus rau kev txhawb nqa daim ntawv thov. Los ntawm kev siv zog ntawm cov pab pawg tshawb fawb, kev tsim kho vaj tse, kev txhawb nqa ntawm cov cai hauv tebchaws, thiab kev koom tes hauv tebchaws thiab thoob ntiaj teb thiab kev sib pauv, Tuam Tshoj txoj kev teeb tsa hauv thaj teb ntawm attosecond lasers yuav txaus siab rau kev loj hlob dav dav. Thaum ntau lub tsev kawm ntawv qib siab thiab cov tsev kawm ntawv tshawb fawb koom nrog kev tshawb fawb ntawm attosecond lasers, ib pawg ntawm cov kws tshawb fawb txawj ntse nrog lub zeem muag thoob ntiaj teb thiab lub peev xwm tshiab yuav raug cog qoob loo, txhawb kev txhim kho ruaj khov ntawm attosecond science. Lub chaw tshawb fawb loj hauv tebchaws Attosecond kuj tseem yuav muab lub platform tshawb fawb ua ntej rau lub zej zog tshawb fawb thiab ua rau muaj kev pab ntau dua rau kev nce qib ntawm science thiab technology.