Ua holomua ka hui Free electron Laser o ka Chinese Academy of Science i ka noiʻi ʻana i nā laser electron manuahi piha. Ma muli o ka Shanghai Soft X-ray Free Electron Laser Facility, ua hōʻoia maikaʻi ʻia ke ʻano hou o ka echo harmonic cascade free electron laser i manaʻo ʻia e Kina, a ua loaʻa i ka radiation X-ray coherent radiation me ka hana maikaʻi loa. I kēia mau lā, Ua paʻi ʻia nā hopena ma Optica ma lalo o ke poʻo inoa Coherent and ultra-short soft X-ray pulses from echo-enabled harmonic cascade free electron lasers.
ʻO ka X-ray free electron laser kekahi o nā kumu kukui kiʻekiʻe loa ma ka honua. I kēia manawa, ʻo ka hapa nui o ka honua X-ray free electron lasers e hoʻokumu ʻia ma luna o ka self-amplifying spontaneous emission mechanism (SASE), SASE he kiʻekiʻe kiʻekiʻe kiʻekiʻe a me ka femto level ultra-short pulse width a me nā hana maikaʻi ʻē aʻe, akā SASE vibration. ma ka walaʻau, ʻaʻole kiʻekiʻe ka coherence a me ka paʻa o kāna pulse radiation, ʻaʻole ia ka X-ray band "laser". ʻO kekahi o nā kuhikuhi hoʻomohala koʻikoʻi ma ke kahua o ka laser electron manuahi honua ʻo ia ka hoʻopuka ʻana i ka radiation X-ray piha me ka maikaʻi laser maʻamau, a ʻo ke ala nui ʻo ia ka hoʻohana ʻana i ka mīkini hana laser electron manuahi waho. Loaʻa ka radiation o ka laser electron free hua waho i nā hiʻohiʻona o ka laser hua, a he mau hiʻohiʻona maikaʻi loa e like me ka coherence piha, ka mana o ka pae a me ka synchronization pololei me ka laser pump waho. Eia nō naʻe, ma muli o ka palena o ka nalu a me ka laula pulse o ka laser hua, ua kaupalena ʻia ka uhi ʻana o ka lōʻihi hawewe pōkole a me ka lōʻihi o ka hoʻoponopono ʻana i ka lōʻihi o ka pulse o waho. I mea e hoʻonui hou aku ai i ka uhi ʻana i ka lōʻihi hawewe pōkole o ka laser electron manuahi hua waho, ua hoʻomohala ikaika ʻia nā ʻano hana hana laser electron hou e like me ka echo harmonic generation i ka honua i nā makahiki i hala.
ʻO ka laser electron manuahi hua waho kekahi o nā ala ʻenehana nui e hoʻomohala i ka laser electron manuahi kiʻekiʻe ma Kina. I kēia manawa, ua hoʻohana nā ʻenehana laser electron manuahi ʻehā ma Kina i ke ʻano hana hua o waho. Ma muli o ka Shanghai Deep Ultraviolet Free electron Laser Facility a me ka Shanghai Soft X-ray Free Electron Laser Facility, ua hoʻokō nā kānaka ʻepekema i ka hoʻonui ʻana i ka kukui uila uila uila mua loa a me ka hoʻonui ʻana i ka uila uila uila ultraviolet. I mea e hoʻonui hou aku ai i ka laser electron free hua o waho i ka lōʻihi hawewe pōkole, ua hoʻoholo kūʻokoʻa ka hui noiʻi i kahi hana hou o ka laser electron free coherent me ka echo harmonic cascade, i hāpai ʻia e ka Shanghai Soft X-ray Free electron Laser. ka hoʻolālā kumu, a hoʻopau i ke kaʻina holoʻokoʻa mai ka hōʻoia kumu a hiki i ka hoʻonui ʻana i ka māmā ma ka pahu X-ray palupalu. Hōʻike nā hopena noiʻi i ka hoʻohālikelike ʻia me nā ʻano hua kuʻuna o waho e holo ana, ua loaʻa i kēia mīkini nā hiʻohiʻona spectral maikaʻi loa, ma o ka hoʻohana ʻana o nā mea noiʻi o ka hoʻomohala kūʻokoʻa o ka ʻenehana hōʻoia pulse X-ray ultrafast (https://doi.org/10.1016). /j.fmre.2022.01.027), Ua hōʻoia hou ʻia ka hana maikaʻi o kēia mīkini hou i ka mana pulse lōʻihi a me ka ultrafast pulse generation. Hāʻawi nā hualoaʻa noiʻi kūpono i kahi ala ʻenehana kūpono no ka hoʻokumu ʻana i nā lasers electron manuahi piha piha i ka band subnanometer, a e hāʻawi i kahi mea noiʻi kūpono no nā kahua o ka X-ray nonlinear optics a me ka ultrafast physical chemistry.
ʻO ka echo harmonic cascade free electron laser he hana spectral maikaʻi loa: ʻo ke kiʻi hema ke ʻano cascade maʻamau, a ʻo ke kiʻi ʻākau ke ʻano echo harmonic cascade mode.
Hiki ke hoʻololi ʻia ka lōʻihi o ka pulse X-ray a me ka hanauna pulse ultrafast e ka echo harmonic cascade
Ka manawa hoʻouna: Oct-08-2023