Chikwata cheFree electron Laser cheChinese Academy of Sciences chafambira mberi mukutsvagisa ma electron lasers akabatana zvizere. Zvichibva paShanghai Soft X-ray Free Electron Laser Facility, nzira itsva ye echo harmonic cascade free electron laser yakakurudzirwa neChina yakasimbiswa zvinobudirira, uye soft X-ray coherent radiation ine mashandiro akanaka yakawanikwa. Munguva pfupi yapfuura, Mhedzisiro yacho yakaburitswa muOptica pasi pemusoro unoti Coherent uye ultra-short soft X-ray pulses kubva ku echo-enabled harmonic cascade free electron lasers.
Laser yeX-ray isina maelektroni ndeimwe yemagetsi epamusoro-soro pasi rose. Parizvino, akawanda emaelektroni eX-ray asina maelektroni epasi rose akavakirwa panzira yekuzviwedzera yega (SASE), SASE ine kupenya kwakanyanya uye hupamhi hwemapulse hupfupi uye mamwe mashandiro akanaka, asi SASE vibration neruzha, kubatana uye kugadzikana kwemwaranzi yayo haisi yakakwira, haisi X-ray band "laser". Imwe yenzira dzakakosha dzekuvandudza mumunda weinternational free electron laser ndeyekugadzira mwaranzi yeX-ray yakazara nehunhu hwe laser, uye nzira yakakosha ndeyekushandisa nzira yekushanda yeexternal seed free electron laser. Mwaranzi yeexternal seed free electron laser inogara nhaka hunhu hweseed laser, uye ine hunhu hwakanaka senge kubatana kwakazara, kutonga kwechikamu uye kuenderana kwakaringana neexternal pump laser. Zvisinei, nekuda kwekuganhurirwa kwewavelength nehupamhi hwepulse yeseed laser, kufukidzwa kwewavelength pfupi uye kugadzirisa urefu hwepulse yeexternal seed free electron laser zvakaganhurirwa. Kuti tiwedzere kuwedzera kufukidza kwema electron laser isina mbeu, nzira itsva dzekushanda kwema electron laser dzisina mbeu dzakadai se echo harmonic generation dziri kugadzirwa nesimba pasi rose mumakore achangopfuura.
Laser yekunze isina electron ndiyo imwe yenzira huru dzehunyanzvi dzekugadzira laser yekunze isina electron muChina. Parizvino, zvishandiso zvese zvina zve high gain free electron laser muChina zvave kushandisa nzira yekushanda kwembeu yekunze. Zvichibva paShanghai Deep Ultraviolet Free electron Laser Facility neShanghai Soft X-ray Free Electron Laser Facility, masayendisiti akaenderera mberi nekuwana yekutanga international echo type free electron laser amplification uye yekutanga extreme ultraviolet echo type free electron laser saturation amplification. Kuti vawedzere kukurudzira iyo external seed free electron laser kusvika paurefu hwenguva pfupi, timu yekutsvagisa yakazvimiririra yakaronga nzira itsva ye fully coherent free electron laser ine echo harmonic cascade, iyo yakagamuchirwa neShanghai Soft X-ray Free electron Laser device senzira yekutanga, uye yakapedzisa maitiro ese kubva pakusimbisa nheyo kusvika pakuwedzera kwechiedza mu soft X-ray band. Zvakabuda muongororo zvinoratidza kuti kana tichienzanisa nemaitiro ekunze emhando yembeu, maitiro aya ane hunhu hwakanaka kwazvo hwespectral, kuburikidza nekushandiswa kwevaongorori vekuvandudza tekinoroji yeX-ray pulse diagnosis yakazvimiririra (https://doi.org/10.1016/j.fmre.2022.01.027), Kushanda kwepamusoro kwemaitiro aya matsva mukutonga kureba kwepulse uye kugadzira pulse yakamhanya kwakasimbiswa zvakare. Mhedzisiro yekutsvagisa yakakodzera inopa nzira yehunyanzvi inogoneka yekugadzira ma electron lasers akasununguka akazara mu subnanometer band, uye ichapa chishandiso chakakodzera chekutsvagisa kuminda yeX-ray nonlinear optics uye ultrafast physical chemistry.
Laser ye echo harmonic cascade isina maelektroni ine mashandiro akanaka kwazvo: mufananidzo wekuruboshwe ndiyo nzira ye cascade yakajairika, uye mufananidzo wekurudyi ndiyo nzira ye echo harmonic cascade.
Kugadziriswa kwehurefu hwemapundu eX-ray uye kugadzirwa kwepundu nekukurumidza kunogona kuitwa ne echo harmonic cascade
Nguva yekutumira: Gumiguru-08-2023