Ubuchwepheshe kanye nezitayela zentuthuko zama-laser e-attosecond eShayina

Ubuchwepheshe kanye nezindlela zokuthuthukiswa kwe-ama-laser e-attosecondeShayina

I-Institute of Physics, i-Chinese Academy of Sciences, ibike imiphumela yokulinganisa engu-160 njenge-attosecond pulses ezihlukanisiwe ngo-2013. Ama-attosecond pulses ahlukanisiwe (ama-IAP) aleli thimba locwaningo akhiqizwe ngokusekelwe kuma-harmonics aphezulu aqhutshwa ama-sub-5 femtosecond laser pulses aqiniswe yi-CEP, ngesilinganiso sokuphindaphinda esingu-1 kHz. Izici zesikhathi zama-attosecond pulses zibonakaliswe yi-attosecond stretch spectroscopy. Imiphumela ikhombisa ukuthi lo mgqa ungahlinzeka ngama-attosecond pulses ahlukanisiwe anobude be-pulse obungu-160 attoseconds kanye nobude be-wavelength obuphakathi obungu-82eV. Ithimba lenze intuthuko ekwakhiweni komthombo we-attosecond kanye nobuchwepheshe be-attosecond stretching spectroscopy. Imithombo yokukhanya ye-ultraviolet ejulile enesisombululo se-attosecond izovula nezinkambu ezintsha zohlelo lokusebenza lwe-condensed matter physics. Ngo-2018, i-Institute of Physics, i-Chinese Academy of Sciences, nayo ibike uhlelo lokwakha lwedivayisi yomsebenzisi yokulinganisa exazululwa isikhathi ngokushesha ehlanganisa imithombo yokukhanya ye-attosecond nama-terminal ahlukahlukene okulinganisa. Lokhu kuzokwenza abacwaningi bakwazi ukwenza izilinganiso zesikhathi eziguquguqukayo ze-attosecond kuya ku-femtosecond zezinqubo ze-ultrafast ezintweni, kuyilapho futhi zine-momentum kanye ne-spatial resolution. Futhi kuvumela abacwaningi ukuthi bahlole futhi balawule i-microscopic ultrafast electronic dynamics kuma-athomu, ama-molecule, izindawo kanye nezinto eziqinile ezinkulu. Lokhu ekugcineni kuzovula indlela yokuqonda nokusebenzisa izenzakalo ezibalulekile ze-macroscopic ezihlanganisa izifundo eziningi zocwaningo ezifana ne-physics, i-chemistry kanye ne-biology.

Ngo-2020, i-Huazhong University of Science and Technology yaphakamisa ukusetshenziswa kwendlela ye-all-optical ukuze kulinganiswe futhi kwakhiwe kabusha ama-pulse e-attosecond ngokunembile ngokusebenzisa ubuchwepheshe be-optical gating obuxazululwe imvamisa. Ngo-2020, i-Chinese Academy of Sciences nayo yabika ukuthi ikhiqize ngempumelelo ama-pulse e-attosecond ahlukanisiwe ngokubumba insimu ye-photoelectric ye-femtosecond pulse ngokusebenzisa ubuchwepheshe be-pass-gate ekhethiwe kabili. Ngo-2023, ithimba elivela e-National University of Defense Technology laphakamisa inqubo ye-PROOF esheshayo, ebizwa ngokuthi i-qPROOF, yokuchaza ama-pulse e-attosecond ahlukanisiwe e-ultra-wideband.

Ngo-2025, abacwaningi abavela e-Chinese Academy of Sciences eShanghai bathuthukisei-laserubuchwepheshe bokuvumelanisa obusekelwe ohlelweni lokuvumelanisa isikhathi olwakhiwe ngokuzimela, okuvumela ukulinganiswa kwe-jitter yesikhathi okunembe kakhulu kanye nempendulo yesikhathi sangempela yama-laser e-picosecond. Lokhu akugcini nje ngokulawula i-jitter yesikhathi yesistimu ngaphakathi kwebanga le-attosecond kodwa futhi kwathuthukisa ukuthembeka kwe-uhlelo lwe-laserngesikhathi sokusebenza kwesikhathi eside. Uhlelo lokuhlaziya nokulawula oluthuthukisiwe lungenza ukulungiswa kwesikhathi sangempela kwe-time jitter. Ngonyaka ofanayo, abacwaningi babesebenzisa nama-laser e-relativistic intensity spacetime vortices (STOV) ukuze bakhiqize ama-pulse e-attosecond gamma-ray ahlukanisiwe athwala i-lateral orbital angular momentum.

Insimu yama-laser e-attosecond isesikhathini sokuthuthuka okusheshayo, ehlanganisa izici eziningi kusukela ocwaningweni oluyisisekelo kuya ekukhuthazweni kohlelo lokusebenza. Ngemizamo yamaqembu ocwaningo lwesayensi, ukwakhiwa kwengqalasizinda, ukusekelwa kwezinqubomgomo zikazwelonke, kanye nokubambisana kwasekhaya nakwamanye amazwe kanye nokushintshana, ukwakheka kweShayina emkhakheni wama-laser e-attosecond kuzojabulela amathuba amaningi entuthuko. Njengoba amanyuvesi amaningi nezikhungo zocwaningo zijoyina ucwaningo ngama-laser e-attosecond, iqembu lamakhono ocwaningo lwesayensi anombono wamazwe ngamazwe kanye namakhono amasha lizokhuliswa, kukhuthazwe intuthuko esimeme yesayensi ye-attosecond. Isikhungo sesayensi esikhulu se-Attosecond sikazwelonke sizophinde sihlinzeke ngeplatifomu yocwaningo ehamba phambili emphakathini wesayensi futhi senze iminikelo emikhulu ekuthuthukisweni kwesayensi nobuchwepheshe.