Reera tere rawamō te pūtaiao attosecond
I tēnei wā, ko ngā pāoro attosecond ka whiwhihia mā te whakaputanga harmonic ota-teitei (HHG) e peia ana e ngā mara kaha. Ko te uho o tō rātou whakaputanga ka taea te mārama ko ngā irahiko e whaka-ionihia ana, e whakatereterehia ana, e whakakotahitia ana e te mara hiko laser kaha hei tuku i te pūngao, ā, ka tukuna ngā pāoro attosecond XUV.
Nō reira, he tino tairongo te putanga attosecond ki te whānui o te pāorooro, te pūngao, te roanga ngaru, me te tere o te tukurua o tete taraiwa i te reera(Reera tere rawa): he pai te whānui o te pāoro poto mō te wehe i ngā pāoro attosecond, ka whakapai ake te kaha teitei i te ionization me te pai o te mahi, ka whakanui ake te roangaru roa i te kaha tapahi engari ka whakaiti nui i te pai o te tahuritanga, ā, ka whakapai ake te tere whakahokinga teitei i te ōwehenga tohu-ki-haruru engari ka whakawhāitihia e te kaha pāoro kotahi. He rerekē te aro o ngā tono rerekē (pēnei i te karu hikohiko, te tirotiro mimiti hihi-X, te tatau tūponotanga, me ētahi atu) ki te taupū pāoro attosecond, e whakaatu ana i ngā whakaritenga rerekē me te whānui mō ngā reera taraiwa. He mea nui te whakapai ake i te mahi a ngā reera taraiwa mō te whakamahi i roto i te pūtaiao attosecond.
Ngā ara hangarau matua e whā hei whakarei ake i te mahi a ngā taiaho taraiwa (taiaho tino tere)
1. Pūngao teitei ake: I hangaia hei wikitoria i te iti o te whai huatanga o te tahuritanga o te HHG me te whiwhi i ngā pāoro attosecond teitei-whakaputa. Kua neke te whanaketanga hangarau mai i te whakanui pāoro chirped tuku iho (CPA) ki te whānau whakanui tawhā whatu, tae atu ki te whakanui pāoro chirped tawhā whatu (OPCPA), te OPA chirped takirua (DC-OPA), te OPA rohe auau (FOPA), me te OPCPA ōrite ā-wāhanga (QPCPA). Me te whakakotahi anō i ngā tikanga whakahiato hihi honohono (CBC) me te whakanui wehewehe pāoro (DPA) hei wikitoria i ngā herenga ā-tinana o ngā whakanui hongere kotahi, pērā i ngā pānga wera me te kino kore-raina, me te whakatutuki i te putanga pūngao taumata Joule.
2. Whānui poto o te pāorooro: I hangaia hei whakaputa i ngā pāorooro attosecond motuhake ka taea te whakamahi hei tātari i ngā hihiri hiko, me te hiahia kia torutoru, kia iti rānei ngā pāorooro taraiwa ā-wā, me te wāhanga takai kawe pumau (CEP). Ko ngā hangarau matua ko te whakamahi i ngā tikanga kōpeketanga muri kore-raina pērā i te muka matua tuwhera (HCF), te kiriata angiangi maha (MPSC), me te kōhao maha-hongere (MPC) hei kōpeke i te whānui o te pāorooro ki ngā roa tino poto. Ka inehia te pumau CEP mā te whakamahi i te ine whakawhiti f-2f, ā, ka tutuki mā te urupare hohe/whāngai whakamua (pēnei i te AOFS, AOPDF) me ngā tikanga whakaū whaiaro whatu-katoa kore-whakahaere i runga i ngā tukanga rerekētanga auau.
3. Ngaru roa ake: I hangaia hei pana i te kaha photon attosecond ki te roopu "matapihi wai" mō te whakaahua ira koiora. Ko ngā ara hangarau matua e toru ko:
Te whakanui tawhā whatu (OPA) me tōna rerenga: Koinei te otinga matua i roto i te awhe roangaru 1-5 μm, e whakamahi ana i ngā tioata pēnei i te BiBO me te MgO:LN; >E hiahiatia ana ngā tioata pēnei i te ZGP me te LiGaS₂ mō te roopu roangaru 5 μm.
Te Whakaputa Auautanga Rerekē (DFG) me te Auautanga Rerekētanga Intra Pulse (IPDFG): ka taea te whakarato i ngā pūtake purapura me te pumau CEP kore mahi.
Ko ngā hangarau taiaho tika, pērā i ngā taiaho chalcogenide kua tāpirihia ki te konganuku whakawhiti Cr: ZnS/Se, e mōhiotia ana ko te "mid infrared titanium sapphire" ā, he pai tōna hanganga kiato me te tino whai hua.
4. Te tere o te whakahokinga: e aro ana ki te whakapai ake i te ōwehenga tohu-ki-haruru me te whai huatanga o te kohikohi raraunga, me te aro ki ngā herenga o ngā pānga utu ātea. E rua ngā ara matua:
Hangarau kōhao whakarei ake i te haruru: te whakamahi i ngā kōhao haruru tino tika hei whakarei ake i te mana tihi o ngā pāoro auau auau taumata megahertz hei akiaki i te HHG, kua whakamahia i roto i ngā mara pēnei i ngā heru auau XUV, engari he wero tonu te whakaputa i ngā pāoro attosecond motuhake.
Te tere o te whakahokinga me tetaiaho mana-teiteiKo te taraiwa tika, tae atu ki te OPCPA, te muka CPA i honoa ki te kōpeketanga pou kore-raina, me te oscillator kiriata angiangi, kua tutuki i a ia te whakaputanga pātere attosecond motuhake i te tere tukurua o te 100 kHz.
Wā tuku: Maehe-16-2026