Femtohekona mana teiteirēseriHe nui te uara o tēnei mea i roto i ngā rangahau pūtaiao me ngā mara ahumahi pērā i te whakaputa terahertz, te whakaputa pātītī attosecond me te heru auau whatu.Ngā taiaho kua raka-whakarerekētiaKo ngā mea e hangai ana ki ngā pāpāho poraka-whakanui tuku iho e whakawhāitihia ana e te pānga arotahi wera i te mana teitei, ā, ko te mana putanga mōrahi i tēnei wā ko te 20 W pea.
Ka whakamahia e te taiaho pepa angiangi te hanganga papu maha-haerenga hei whakaata i terama papuki te reo whakanui rau me te matotoru o te 100 maikoroni mō te mimiti papu tino pai. Ko te reo whakanui tino angiangi me te hangarau whakamatao whakamuri ka tino whakaiti i te awe o te pānga arotahi wera me te pānga kore-raina, ā, ka taea te whakatutuki i te putanga pāoro femtosecond teitei ake.
Ko ngā oscillator angiangi e honoa ana ki te hangarau maukati aratau arotahi Kerr te huarahi matua ki te whiwhi i te putanga taiaho mana toharite teitei me te whānui o te pāoro i te raupapa o te femtosecond.
PIK. 1 (a) 72 hoahoa hanganga whatu me (b) hoahoa ā-tinana o te kōwae papu
I hangaia, i hangaia hoki e tētahi rōpū kairangahau mai i te Chinese Academy of Sciences tētahi taiaho rau raka-arotahi Kerr i runga i te waeine papu 72-ara i whakawhanakehia e ia anō, ā, i whakawhanakehia hoki tētahi taiaho rau raka-arotahi Kerr me te mana toharite teitei rawa atu me te pūngao pāoro kotahi i Haina.
I runga i te mātāpono o te raka aratau arotahi Kerr me te tātaitanga auau o te matihiko ABCD, i tātarihia tuatahitia e te tīma rangahau te ariā raka aratau o te reera raka aratau arotahi Kerr pereti angiangi, i whakatauira i ngā huringa aratau i roto i te resonator i te wā e mahi ana te raka aratau me te mahi tonu, ā, i whakaūtia ka whakaitihia te radius aratau kōhao i te diaphragm mārō neke atu i te 7% i muri i te raka aratau.
I muri mai, i raro i te mātāpono hoahoa, i hoahoa, i hanga hoki e te tīma rangahau tētahi resonator raka-aratau arotahi Kerr (Pikitia 2) i runga i te kōwae papu 72-ara (Pikitia 1) i whakawhanakehia motuhaketia e te tīma, ā, i whiwhi i tētahi putanga taiaho pāorooro me te mana toharite o te 11.78W, te whānui pāorooro o te 245 fs me te kaha pāorooro kotahi o te 0.14μJ i te wā pāorooro 72 W. He pai te whānui o te pāorooro putanga me te rerekētanga o te aratau poka-roto ki ngā hua whakatauira.
PIK. 2 Te hoahoa kauwhata o te kōhao whakakorikori o te taiaho wafer Yb:YAG maukati-aratau arotahi Kerr i whakamahia i roto i te whakamātautau
Hei whakapai ake i te mana whakaputa o te taiaho, i whakanuia e te tīma rangahau te pūtoro piko o te whakaata arotahi, ā, i whakatikatikahia te matotoru o te reo Kerr me te horapa tuarua. I te wā i whakatakotoria ai te mana papu ki te 94 W, i whakanuia te mana whakaputa toharite ki te 22.33 W, ā, ko te whānui o te pā he 394 fs, ā, ko te kaha pā kotahi he 0.28 μJ.
Hei whakanui ake i te mana whakaputa, ka whakanui ake te tīma rangahau i te radius piko o te takirua whakaata kōpiko arotahi, me te whakanoho i te resonator ki roto i te taiao kati korehau iti hei whakaiti i te awe o te raruraru hau me te marara o te hau.
Wā tuku: 15 o Ākuhata-2023