Ndị otu Laser eletrọn efu nke ụlọ akwụkwọ sayensị China enweela ọganihu na nyocha nke lasers elektrọn na-enweghị njikọ zuru oke.Dabere na Shanghai Soft X-ray Free Electron Laser Facility, usoro ọhụrụ nke echo harmonic cascade free elektrọn laser nke China tụrụ aro ka enwetara nke ọma, na enwetara radieshon dị nro nke nwere oke arụmọrụ.Na nso nso a, e bipụtara nsonaazụ ya na Optica n'okpuru aha Coherent na ultra-short soft X-ray pulses from echo-enabled harmonic cascade free electron lasers.
Igwe ọkụ eletrik na-enweghị X-ray bụ otu n'ime isi mmalite ọkụ kachasị elu n'ụwa.Ugbu a, ọtụtụ n'ime mba ụwa X-ray free elektrọn lasers na-adabere na onwe-amplifying spontaneous emission usoro (SASE), SASE nwere nnọọ elu elu nchapụta na femto larịị ultra-short pulse obosara na ndị ọzọ magburu onwe arụmọrụ, ma SASE vibration. site na mkpọtụ, nkwekọ na nkwụsi ike nke ụzarị ụzarị ya adịghị elu, ọ bụghị eriri X-ray "laser".Otu n'ime ntụzịaka mmepe kachasị mkpa n'ọhịa nke laser elektrọn nke mba ụwa bụ imepụta radieshon X-ray zuru oke yana ogo laser ọdịnala, yana ụzọ dị mkpa bụ iji usoro ọrụ laser na-enweghị mkpụrụ nke mpụga.The radieshon nke mpụga mkpụrụ free eletrọnịkị laser eketa e ji mara nke mkpụrụ laser, na nwere magburu onwe e ji mara dị ka zuru coherence, usoro akara na kpọmkwem mmekọrịta na mpụga mgbapụta laser.Otú ọ dị, n'ihi mmachi nke ogologo wavelength na pulse obosara nke mkpụrụ osisi laser, mkpirisi mkpuchi ogologo ogologo na pulse ogologo mgbanwe nso nke mpụta mkpụrụ free eletrọn laser nwere oke.Iji gbasawanye mkpuchi ogologo ogologo ogologo nke mkpụrụ mpụta nke laser elektrọn na-akwụghị ụgwọ, a na-emepụta ụdị ọkụ eletrik ọhụrụ na-arụ ọrụ dị ka ọgbọ nkwukọrịta okwu n'ike n'ụwa n'afọ ndị na-adịbeghị anya.
Laser mkpụrụ nke na-enweghị mkpụrụ nke mpụga bụ otu n'ime ụzọ ọrụ aka na-arụ ọrụ iji mepụta laser eletrọn n'efu na China.Ka ọ dị ugbu a, ngwaọrụ laser eletrọn niile dị elu anọ dị na China anabatala ụdị ọrụ mkpụrụ nke mpụga.Dabere na Shanghai Deep Ultraviolet Free Electron Laser Facility na Shanghai Soft X-ray Free Electron Laser Facility, ndị ọkà mmụta sayensị ejirila nke ọma nweta ụdị mgbanaka mbụ mba ụwa n'efu laser laser ìhè na nke mbụ ultraviolet echo ụdị free electron laser saturation amplification.Iji nwetakwuo nkwalite mpụta mkpụrụ eletrọn laser n'efu ka ọ dị mkpụmkpụ, ndị otu nyocha ahụ tụpụtara n'onwe ya usoro ọhụụ nke laser elektrọn n'efu na echo harmonic cascade, nke Shanghai Soft X-ray nakweere ngwaọrụ elektrọn Laser efu. atụmatụ nke bụ isi, wee mechaa usoro ahụ dum site na nkwenye ụkpụrụ ruo na mmụba ọkụ na eriri X-ray dị nro.Nsonaazụ nyocha gosiri na e jiri ya tụnyere usoro ụdị mkpụrụ dịpụrụ adịpụ nke ọdịnala, usoro a nwere njiri mara mma nke ukwuu, site na nnabata nke ndị nyocha nke mmepe onwe ha nke teknụzụ nyocha ultrafast X-ray pulse (https://doi.org/10.1016). /j.fmre.2022.01.027), The elu arụmọrụ nke ọhụrụ a usoro na usu ogologo akara na ultrafast usu ọgbọ na-kwupụtara nkwenye.Nsonaazụ nyocha dị mkpa na-enye ụzọ teknụzụ ga-ekwe omume maka ọgbọ nke lasers elektrọn zuru oke na ngalaba subnanometer, ma ga-eweta ngwa nyocha dị mma maka mpaghara X-ray na-abụghị nke optics na kemịkalụ anụ ahụ ultrafast.
Echo harmonic cascade eletrọn laser na-akwụghị ụgwọ nwere ọmarịcha ọmarịcha arụmọrụ: onyonyo aka ekpe bụ ụdị cascade nke a na-ahụkarị, onyonyo ziri ezi bụ ọnọdụ cascade nke echo harmonic.
Enwere ike ime ngbanwe ogologo oge X-ray na ultrafast pulse site na echo harmonic cascade
Oge nzipu: Ọktoba 08-2023