Ukadaulo ndi chitukuko cha ma laser a attosecond ku China

Ukadaulo ndi chitukuko chalasers ya attosecondku China

Bungwe la Institute of Physics, Chinese Academy of Sciences, linanena zotsatira za muyeso wa 160 ngati ma attosecond pulses odzipatula mu 2013. Ma attosecond pulses odzipatula (IAPs) a gulu lofufuzali adapangidwa kutengera ma harmonics apamwamba omwe amayendetsedwa ndi ma sub-5 femtosecond laser pulses okhazikika ndi CEP, ndi liwiro lobwerezabwereza la 1 kHz. Makhalidwe a nthawi ya ma attosecond pulses adadziwika ndi attosecond stretch spectroscopy. Zotsatira zake zikuwonetsa kuti beamline iyi imatha kupereka ma attosecond pulses odzipatula okhala ndi nthawi ya pulse ya 160 attoseconds ndi wavelength yapakati ya 82eV. Gululi lapanga kupita patsogolo pakupanga magwero a attosecond ndi ukadaulo wa attosecond stretching spectroscopy. Magwero a kuwala kwa ultraviolet kwambiri okhala ndi attosecond resolution adzatsegulanso minda yatsopano yogwiritsira ntchito ma condensed matter physics. Mu 2018, Institute of Physics, Chinese Academy of Sciences, idanenanso za dongosolo lomanga chipangizo chogwiritsira ntchito nthawi yofulumira kwambiri chomwe chimaphatikiza magwero a kuwala a attosecond ndi ma terminals osiyanasiyana oyezera. Izi zithandiza ofufuza kuchita miyeso yosinthasintha ya attosecond to femtosecond ya njira zofulumira kwambiri muzinthu, komanso kukhala ndi mphamvu komanso kuthekera kwa malo. Ndipo zimathandiza ofufuza kufufuza ndikuwongolera mphamvu zamagetsi zamagetsi za microscopic ultrafast mu maatomu, mamolekyulu, pamwamba ndi zinthu zolimba zambiri. Izi pamapeto pake zidzatsegula njira yomvetsetsa ndikugwiritsa ntchito zochitika zazikulu zomwe zimaphatikizapo maphunziro osiyanasiyana monga fizikisi, chemistry ndi biology.

Mu 2020, Huazhong University of Science and Technology inapereka lingaliro logwiritsa ntchito njira yowunikira yonse kuti izindikire molondola ndikukonzanso ma attosecond pulses kudzera mu ukadaulo wa optical gating womwe umakonzedwa pafupipafupi. Mu 2020, Chinese Academy of Sciences inanenanso kuti idapanga bwino ma attosecond pulses olekanitsidwa mwa kupanga gawo la femtosecond pulse photoelectric field pogwiritsa ntchito ukadaulo wosankha wa dual-light pass-gate. Mu 2023, gulu lochokera ku National University of Defense Technology linapereka lingaliro la njira yofulumira ya PROOF, yotchedwa qPROOF, yofotokozera ma attosecond pulses olekanitsidwa a ultra-wideband.

Mu 2025, ofufuza ochokera ku Chinese Academy of Sciences ku Shanghai adapangalaserukadaulo wogwirizanitsa kutengera dongosolo logwirizanitsa nthawi lopangidwa palokha, zomwe zimathandiza kuyeza nthawi molondola komanso kupereka mayankho nthawi yeniyeni a ma laser a picosecond. Izi sizinangowongolera kugwedezeka kwa nthawi kwa dongosolo mkati mwa attosecond range komanso zinawonjezera kudalirika kwadongosolo la laserPa nthawi yogwira ntchito kwa nthawi yayitali. Dongosolo lowunikira ndi kulamulira lomwe lapangidwali limatha kukonza nthawi yeniyeni. M'chaka chomwecho, ofufuza ankagwiritsanso ntchito ma laser a relativistic intensity spacetime vortices (STOV) kuti apange ma pulses a attosecond gamma-ray omwe ali ndi lateral orbital angular momentum.

Gawo la ma laser a attosecond lili mu nthawi ya chitukuko chofulumira, chomwe chikuphatikizapo mbali zingapo kuyambira kafukufuku woyambira mpaka kukwezedwa kwa ntchito. Kudzera mu khama la magulu ofufuza za sayansi, kumanga zomangamanga, kuthandizira mfundo za dziko, komanso mgwirizano wapadziko lonse lapansi ndi mayiko, kapangidwe ka China m'munda wa ma laser a attosecond kadzakhala ndi mwayi waukulu wopititsa patsogolo chitukuko. Pamene mayunivesite ambiri ndi mabungwe ofufuza alowa nawo kafukufuku wa ma laser a attosecond, gulu la akatswiri ofufuza za sayansi omwe ali ndi malingaliro apadziko lonse lapansi komanso luso latsopano lidzakulitsidwa, kulimbikitsa chitukuko chokhazikika cha sayansi ya attosecond. Malo ophunzirira akuluakulu asayansi a National Attosecond adzaperekanso nsanja yotsogola yofufuzira kwa anthu asayansi ndikupereka zopereka zazikulu pakupititsa patsogolo sayansi ndi ukadaulo.