Ukadaulo ndi chitukuko cha ma lasers a attosecond ku China

Ukadaulo ndi chitukuko cha ma lasers a attosecond ku China

The Institute of Physics, Chinese Academy of Sciences, inanena za zotsatira za kuyeza kwa 160 monga isolated attosecond pulses mu 2013. The isolated attosecond pulses (IAPs) ya gulu lofufuzali inapangidwa potengera ma harmonics apamwamba oyendetsedwa ndi sub-5 femtosecond laser pulses yokhazikika ndi mlingo wa kEP, wokhazikika ndi kEP. Makhalidwe akanthawi a attosecond pulses anali odziwika ndi attosecond stretch spectroscopy. Zotsatira zikuwonetsa kuti mzerewu ukhoza kupereka ma pulse a attosecond omwe ali ndi nthawi yayitali ya 160 attoseconds ndi kutalika kwapakati kwa 82eV. Gululi lachita bwino kwambiri paukadaulo wa attosecond source generation ndi attosecond stretching spectroscopy. Magwero owunikira kwambiri a ultraviolet okhala ndi attosecond resolution adzatsegulanso magawo atsopano ogwiritsira ntchito fizikisi ya zinthu zofupikitsidwa. Mu 2018, Institute of Physics, Chinese Academy of Sciences, idanenanso za mapulani omanga a chipangizo choyezera chogwiritsa ntchito nthawi yayitali chomwe chimaphatikiza magwero owunikira a attosecond okhala ndi ma terminals osiyanasiyana oyezera. Izi zidzathandiza ochita kafukufuku kuti azitha kuyendetsa miyeso yosinthika ya nthawi ya femtosecond ya njira zofulumira kwambiri pa nkhani, komanso kukhala ndi mphamvu komanso kusintha kwa malo. Ndipo amalola ofufuza kufufuza ndi kulamulira microscopic ultrafast mphamvu zamagetsi mu maatomu, mamolekyu, pamwamba ndi zinthu zolimba chochuluka. Izi zidzatsegula njira yomvetsetsa ndikugwiritsa ntchito zochitika zazikuluzikulu zomwe zimakhudza magawo angapo a kafukufuku monga physics, chemistry ndi biology.

Mu 2020, Huazhong University of Science and Technology adaganiza zogwiritsa ntchito njira yowoneka bwino kuti athe kuyeza molondola ndikumanganso ma pulse a attosecond kudzera muukadaulo wokhazikika wokhazikika. Mu 2020, Chinese Academy of Sciences idanenanso kuti idapanga bwino ma atosecond pulses popanga gawo la femtosecond pulse photoelectric pogwiritsa ntchito ukadaulo wapawiri wosankha pass-gate. Mu 2023, gulu lochokera ku National University of Defense Technology lidakonza njira yofulumira ya PROOF, yotchedwa qPROOF, yodziwika ndi ma ultra-wideband atosecond pulses.

Mu 2025, ofufuza ochokera ku Chinese Academy of Sciences ku Shanghai adapanga ukadaulo wolumikizana ndi laser potengera njira yolumikizira nthawi yodzipangira yokha, zomwe zimathandiza kuyeza nthawi yolondola kwambiri komanso kuyankha zenizeni kwa ma lasers a picosecond. Izi sizinangoyang'anira nthawi ya jitter mu attosecond range komanso zidathandizira kudalirika kwa laser system pakanthawi yayitali. Dongosolo lowunikira komanso lowongolera lomwe lapangidwa limatha kukonza nthawi yeniyeni ya jitter ya nthawi. M'chaka chomwecho, ofufuza ankagwiritsanso ntchito ma lasers a relativistic intensity spacetime vortices (STOV) kuti apange ma pulse a attosecond a gamma-ray omwe amakhala ndi mphamvu yakutsogolo ya orbital.

Gawo la ma lasers a attosecond lili munthawi yachitukuko chofulumira, zomwe zikukhudza zinthu zingapo kuyambira pakufufuza koyambira mpaka kukwezedwa kwa ntchito. Kupyolera mu zoyesayesa za magulu ofufuza asayansi, kumanga zomangamanga, kuthandizira ndondomeko za dziko, ndi mgwirizano wapakhomo ndi wapadziko lonse ndi kusinthana, kamangidwe ka China m'munda wa lasers attosecond adzasangalala ndi chitukuko chachikulu. Pamene mayunivesite ambiri ndi mabungwe ofufuza alowa nawo kafukufuku wa attosecond lasers, gulu la akatswiri ofufuza asayansi okhala ndi malingaliro apadziko lonse lapansi komanso luso laukadaulo lidzakulitsidwa, kulimbikitsa chitukuko chokhazikika cha sayansi ya attosecond. Malo akuluakulu asayansi a National Attosecond adzaperekanso malo otsogolera ofufuza asayansi ndikuchitapo kanthu pakupita patsogolo kwa sayansi ndi ukadaulo.