Tekinoroji nemafambiro ekuvandudzalasers dzeattosecondmuChina
Sangano reFizikisi, Chinese Academy of Sciences, rakashuma mhedzisiro yekuyerwa kwe160 semapulses eattosecond akapatsanurwa muna 2013. Mapulses eattosecond akapatsanurwa (IAPs) echikwata ichi chekutsvagisa akagadzirwa zvichibva paharmonics yepamusoro-soro inotungamirwa nesub-5 femtosecond laser pulses yakagadzikiswa neCEP, ine repetition rate ye1 kHz. Hunhu hwenguva hwemapulses eattosecond hwakaratidzwa neattosecond stretch spectroscopy. Mhedzisiro yacho inoratidza kuti beamline iyi inogona kupa mapulses eattosecond akapatsanurwa ane pulse duration ye160 attoseconds uye central wavelength ye82eV. Chikwata ichi chakaita budiriro mukugadzirwa kweattosecond source uye tekinoroji yeattosecond stretching spectroscopy. Masource echiedza cheultraviolet chakanyanya ane attosecond resolution achavhurawo minda mitsva yekushandisa yecombined matter physics. Muna 2018, Institute of Physics, Chinese Academy of Sciences, yakashumawo hurongwa hwekuvaka hwemushandisi we cross-disciplinary ultrafast time-resolved measurement unobatanidza masources echiedza eattosecond nema terminals akasiyana-siyana ekuyera. Izvi zvichagonesa vaongorori kuita zviyero zvinochinjika zveattosecond kusvika femtosecond zvemaitiro e ultrafast muzvinhu, ukuwo zvichiva ne momentum uye spatial resolution. Uye zvinobvumira vaongorori kuongorora nekudzora microscopic ultrafast electronic dynamics mumaatomu, mamorekuru, pamusoro uye zvinhu zvakasimba. Izvi zvichapedzisira zvagadzira nzira yekunzwisisa nekushandisa macroscopic phenomena dzakakosha dzinofukidza tsvakiridzo dzakawanda dzakadai sefizikisi, kemesitiri uye biology.
Muna 2020, Huazhong University of Science and Technology yakaronga kushandiswa kwenzira ye all-optical kuyera nemazvo uye kugadzirazve attosecond pulses kuburikidza ne frequency-resolved optical gating technology. Muna 2020, Chinese Academy of Sciences yakashumawo kuti yakakwanisa kugadzira attosecond pulses dzakaparadzana nekugadzira femtosecond pulse photoelectric field kuburikidza nekushandisa dual-light selective pass-gate technology. Muna 2023, timu kubva kuNational University of Defense Technology yakaronga nzira yekukurumidza yePROOF, inonzi qPROOF, yekutsanangura ma ultra-wideband isolated attosecond pulses.
Muna 2025, vaongorori vekuChinese Academy of Sciences muShanghai vakagadziralasertekinoroji yekuwiriranisa yakavakirwa pahurongwa hwekuwiriranisa nguva hwakazvimiririra, zvichigonesa kuyerwa kwenguva kwakanyatsojeka uye mhinduro chaiyo ye picosecond lasers. Izvi hazvina kungodzora kujeka kwenguva kwehurongwa mukati meattosecond range asiwo zvakawedzera kuvimbika kwesisitimu yelaserpanguva yekushanda kwenguva refu. Sisitimu yekuongorora nekutonga yakagadzirwa inogona kugadzirisa nguva chaiyo. Mugore rimwe chetero, vaongorori vaishandisawo ma laser e relativistic intensity spacetime vortices (STOV) kuti vagadzire ma attosecond gamma-ray pulses akaparadzana ane lateral orbital angular momentum.
Basa rema laser e attosecond riri munguva yekukura nekukurumidza, richifukidza zvinhu zvakawanda kubva pakutsvagisa kwekutanga kusvika pakusimudzira mashandisirwo. Kuburikidza nekuedza kwemapoka ekutsvagisa kwesainzi, kuvaka zvivakwa, rutsigiro rwemitemo yenyika, uye kushandira pamwe kwenyika nedzepasi rose, marongerwo eChina mumunda wema laser e attosecond achave netariro yakakura yekukura. Sezvo mayunivhesiti akawanda nemasangano ekutsvagisa achibatana nekutsvaga ma laser e attosecond, boka revanhu vane tarenda rekutsvagisa kwesainzi vane maonero epasi rose uye hunyanzvi hutsva richasimudzirwa, zvichikurudzira kukura kwakasimba kwesainzi ye attosecond. Nzvimbo huru yesainzi yeNational Attosecond ichapawo chikuva chekutsvagisa chinotungamira munharaunda yesainzi uye ichipa mipiro yakakura mukufambira mberi kwesainzi netekinoroji.
Nguva yekutumira: Nyamavhuvhu-26-2025