Tawagar Free electron Laser ta Kwalejin Kimiyya ta China ta samu ci gaba a binciken lasers na electron kyauta masu cikakken tsari. Dangane da Cibiyar Laser ta Shanghai Soft X-ray Free Electron, an tabbatar da sabuwar hanyar laser electron mai suna echo harmonic cascade free electron da China ta gabatar, kuma an sami hasken X-ray mai laushi mai kyau tare da kyakkyawan aiki. Kwanan nan, an buga sakamakon a cikin Optica ƙarƙashin taken: pulses na X-ray masu laushi masu kyau da ultra-short daga lasers na harmonic cascade free electron masu amfani da echo-enabled.
Laser ɗin lantarki mara X-ray yana ɗaya daga cikin tushen haske mafi ci gaba a duniya. A halin yanzu, yawancin lasers na lantarki marasa X-ray na duniya sun dogara ne akan tsarin fitar da iska mai saurin haɓaka kai tsaye (SASE), SASE yana da haske mai girma sosai da faɗin bugun femto mai gajeren lokaci da sauran kyakkyawan aiki, amma girgizar SASE ta hanyar hayaniya, daidaito da kwanciyar hankali na bugun hasken sa ba shi da yawa, ba shine "laser" na X-ray band ba. Ɗaya daga cikin mahimman hanyoyin ci gaba a fagen laser na lantarki mara X-ray na duniya shine samar da cikakken hasken X-ray tare da ingancin laser na al'ada, kuma hanya mafi mahimmanci ita ce amfani da tsarin aiki na laser na lantarki mara iri na waje. Hasken laser na laser na lantarki mara iri na waje yana gaji halayen laser iri, kuma yana da kyawawan halaye kamar cikakken haɗin kai, sarrafa lokaci da daidaitawa daidai da laser na famfo na waje. Duk da haka, saboda iyakancewar tsawon tsayi da faɗin bugun laser na iri, gajeren murfin tsayi da tsawon daidaitawa na laser na lantarki mara iri na waje suna da iyaka. Domin ƙara faɗaɗa ɗaukar hoto na gajeren zango na laser na lantarki mara iri, sabbin hanyoyin aiki na laser na lantarki kyauta kamar samar da echo harmonic ana haɓaka su sosai a duniya a cikin 'yan shekarun nan.
Laser ɗin lantarki na waje wanda ba shi da tsaba yana ɗaya daga cikin manyan hanyoyin fasaha don haɓaka laser ɗin lantarki mai karɓar riba mai yawa a China. A halin yanzu, duk na'urorin laser ɗin lantarki guda huɗu masu karɓar riba mai yawa a China sun karɓi yanayin aikin iri na waje. Dangane da Cibiyar Laser ɗin lantarki mai zurfin Ultraviolet ta Shanghai da Cibiyar Laser ɗin Laser mai sauƙin X-ray ta Shanghai, masana kimiyya sun sami nasarar haɓaka hasken laser na lantarki na duniya na farko a jere da kuma ƙara girman laser na lantarki na lantarki na ultraviolet mai ƙarancin ultraviolet. Domin ƙara haɓaka laser na lantarki na waje zuwa gajeriyar tsayi, ƙungiyar binciken ta gabatar da sabuwar hanyar laser na lantarki mai cikakken haɗin kai tare da cascade na harmonic, wanda na'urar Laser ɗin lantarki mai sauƙin X-ray ta Shanghai ta amince da shi a matsayin tsarin asali, kuma ta kammala dukkan tsarin daga tabbatarwa zuwa ƙara haske a cikin ƙungiyar X-ray mai laushi. Sakamakon binciken ya nuna cewa idan aka kwatanta da tsarin sarrafa nau'in iri na waje na gargajiya, wannan tsarin yana da kyawawan halaye na gani, ta hanyar amfani da masu bincike na ci gaban fasahar gano bugun X-ray mai zaman kanta (https://doi.org/10.1016/j.fmre.2022.01.027), an ƙara tabbatar da ingantaccen aikin wannan sabon tsarin a cikin sarrafa tsawon bugun jini da samar da bugun zuciya mai sauri. Sakamakon binciken da ya dace yana ba da hanyar fasaha mai yuwuwa don samar da lasers na lantarki kyauta masu cikakken haɗin kai a cikin band ɗin subnanometer, kuma zai samar da kayan aikin bincike mai kyau ga fannoni na X-ray na gani marasa layi da kuma kimiyyar jiki mai sauri.
Laser ɗin echo harmonic cascade free electron yana da kyakkyawan aikin spectral: hoton hagu shine yanayin cascade na al'ada, hoton dama kuma shine yanayin cascade na echo harmonic.
Za a iya cimma daidaiton tsawon bugun X-ray da kuma samar da bugun zuciya mai sauri ta hanyar echo harmonic cascade
Lokacin Saƙo: Oktoba-08-2023