High refrequency yakanyanyisa ultraviolet chiedza sosi

High refrequency yakanyanyisa ultraviolet chiedza sosi

Maitiro epashure-kudzvanya akasanganiswa nemavara maviri-mavara anoburitsa yakakwira-flux yakanyanyisa ultraviolet mwenje sosi
Kumashandisirwo eTr-ARPES, kudzikisa kureba kwemwenje wekutyaira uye kuwedzera mukana weiyo gasi ionization inzira dzinoshanda dzekuwana yakakwira flux uye yakakwira kurongeka. Mukuita kwekugadzira yakakwira-yakarongeka maharmonics ane single-pass yakakwirira-yekudzokorora frequency, iyo frequency kupetwa kana katatu kaviri nzira inotambirwa kuti iwedzere kugadzirwa kwemhando yepamusoro-yakarongeka. Nerubatsiro rwepost-pulse compression, zviri nyore kuwana peak simba density inodiwa kune yakakwira order harmonic chizvarwa nekushandisa pfupi pfupi pulse drive mwenje, saka yakakwira dhizaini inogona kuwanikwa pane iyo yakareba pulse drive.

Kaviri grating monochromator inowana pulse kumberi tilt muripo
Kushandiswa kwechimwe chinhu chakasiyana-siyana mune monochromator chinounza shanduko mukatiopticalnzira inotenderera mudanda rekupedzisira-pfupi pulse, inozivikanwawo seyekupuruzira kumberi, zvichikonzera kutambanudza nguva. Musiyano wenguva wakakwana wenzvimbo yediffraction ine diffraction wavelength λ pane diffraction order m ndiNmλ, apo N ndiyo nhamba yese yemitsetse yakavhenekerwa. Nekuwedzera chechipiri diffractive element, iyo yakarereka pulse kumberi inogona kudzoserwa, uye monochromator ine nguva yekunonoka muripo inogona kuwanikwa. Uye nekugadzirisa nzira yekuona pakati pezvikamu zviviri zvemonochromator, iyo grating pulse shaper inogona kugadzirwa kuti inyatso kutsiva kupararira kweiyo yakakwira kurongeka kwemwaranzi. Uchishandisa dhizaini yekunonoka-kunonoka muripo, Lucchini et al. yakaratidza mukana wekugadzira uye kuratidza ultra-short monochromatic yakanyanyisa ultraviolet pulses ine pulse yakafara ye5 fs.
Chikwata chekutsvagisa cheCsizmadia paELE-Alps Facility muEuropean Extreme Light Facility chakawana spectrum uye pulse modulation yeyakanyanya ultraviolet mwenje vachishandisa kaviri grating nguva-kunonoka muripo monochromator mune yakakwirira-inodzokororwa frequency, yakakwirira-yakarongeka harmonic beam line. Ivo vakagadzira yakakwira order harmonics vachishandisa drivelaserine chiyero chekudzokorora che100 kHz uye yakawana yakanyanyisa ultraviolet pulse yakafara ye4 fs. Iri basa rinovhura mikana mitsva yekuyedza-yakagadziriswa-nguva mukuona situ munzvimbo yeELI-ALPS.

Yepamusoro yekudzokorora frequency yakanyanyisa ultraviolet mwenje sosi yakashandiswa zvakanyanya mukudzidza kwemagetsi emagetsi, uye yakaratidza tarisiro yakafara yekushandiswa mumunda we attosecond spectroscopy uye microscopic imaging. Nekuenderera mberi nekuenderera mberi uye hunyanzvi hwesainzi uye tekinoroji, iyo yakakwirira yekudzokorora frequency yakanyanyisa ultravioletlight sourceiri kufambira mberi munzira yepamusoro yekudzokorora frequency, yakakwirira photon flux, yakakwirira photon simba uye pfupi pulse upamhi. Mune ramangwana, kuenderera mberi nekutsvagisa pamusoro pekudzokorora kwakawanda kwakanyanyisa ultraviolet mwenje masosi kuchawedzera kusimudzira mashandisiro avo mumagetsi emagetsi uye mamwe minda yekutsvagisa. Panguva imwecheteyo, iyo optimization uye yekudzora tekinoroji yeakanyanya kudzokorodza frequency yakanyanyisa ultraviolet mwenje sosi uye mashandisiro ayo mukuyedza matekiniki akadai seangular resolution photoelectron spectroscopy ichave zvakare yakatarisana yekutsvagisa ramangwana. Uye zvakare, iyo nguva-yakagadziriswa attosecond yenguva pfupi absorption spectroscopy tekinoroji uye chaiyo-nguva microscopic imaging tekinoroji yakavakirwa pakakwirira kudzokorora frequency yakanyanyisa ultraviolet mwenje sosi inotarisirwa kuenderera mberi ichidzidzwa, kugadzirwa uye kushandiswa kuitira kuti uwane yakakwirira-chaiyo attosecond-yakagadziriswa. uye nanospace-yakagadziriswa imaging mune ramangwana.