Ngā rangahau hou mō ngā taiaho haurua-tae rua
Kua nui te aro ki ngā taiaho kōpae hiko-haurua (ngā taiaho SDL), e mōhiotia ana ko ngā taiaho whakaputa mata kōhao-waho poutū (VECSEL), i ngā tau tata nei. Ka whakakotahi i ngā painga o te whakanui hiko-haurua me ngā kaiwhakaoho āhua-totoka. Ehara i te mea ka whakaiti noa i te herenga rohe tukunga o te tautoko aratau-kotahi mō ngā taiaho hiko-haurua tikanga, engari he hoahoa āputa roopu hiko-haurua ngāwari me ngā āhuatanga whakanui rauemi teitei. Ka kitea i roto i te whānuitanga o ngā horopaki tono, pēnei i te haruru iti.rēseri whānui-rārangi whaitiputanga, whakaputanga pāorooro tere-poto-poto, whakaputanga hāmoni teitei-ōrite, me te hangarau whetu arataki konutai, me ētahi atu. I te whanaketanga o te hangarau, kua nui ake ngā whakaritenga kua whakatakotoria mō tōna ngāwari o te roangaru. Hei tauira, kua whakaatuhia e ngā puna mārama honohono rua-roa te uara tono tino teitei i roto i ngā mara hou pēnei i te lidar ārai-whakararuraru, te interferometry holographic, te whakawhitiwhitinga maha-wehenga roangaru, te whakaputanga waenga-infrared, terahertz rānei, me ngā heru auau whatu maha-tae. Ko te pehea ki te whakatutuki i te tukunga tae-rua kanapa teitei i roto i ngā taiaho kōpae semiconductor me te pehi pai i te whakataetae whiwhinga i waenga i ngā roangaru maha he uauatanga rangahau tonu i roto i tēnei mara.
Nō nā tata nei, he rua-taerēhia haurua-iraKua whakaarohia e te tīma i Haina tētahi hoahoa maramara auaha hei aro atu ki tēnei wero. Mā te rangahau tau hōhonu, i kitea e rātou ko te whakahaere tika i te tātari pikinga puna irahiko e pā ana ki te pāmahana me ngā pānga tātari moroiti haurua-irahiko e tumanakohia ana ka tutuki te whakahaere ngāwari o te pikinga tae-rua. I runga i tēnei, i angitu te tīma ki te hoahoa i tētahi maramara pikinga kanapa teitei 960/1000 nm. Ka mahi tēnei taiaho i roto i te aratau taketake tata ki te rohe diffraction, me te kanapa putanga tae atu ki te 310 MW/cm²sr.
He torutoru noa iho ngā maikiromita te matotoru o te paparanga tāpiri o te kōpae haurua-waenga, ā, ka hangaia he kōhao iti Fabry-Perot i waenganui i te atanga haurua-waenga me te whakaata Bragg tohatoha raro. Mā te whakamahi i te kōhao iti haurua-waenga hei tātari hihi o roto o te maramara ka whakarerekē i te tāpiri o te puna irahiko. I taua wā, he rerekē ngā tere nekehanga pāmahana o te pānga tātari kōhao iti me te tāpiri haurua-waenga. I te whakakotahitanga me te whakahaere pāmahana, ka taea te whakatutuki i te whakawhiti me te whakahaere i ngā roangaru putanga. I runga i ēnei āhuatanga, i tatauhia e te tīma, ā, i whakatakotoria te tihi tāpiri o te puna irahiko ki te 950 nm i te pāmahana 300 K, me te tere nekehanga pāmahana o te roangaru tāpiri tata ki te 0.37 nm/K. I muri mai, i hangaia e te tīma te tauwehe here roa o te maramara mā te whakamahi i te tikanga matihiko tuku, me ngā roangaru tihi tata ki te 960 nm me te 1000 nm. I whakaatuhia e ngā whakatauira ko te tere nekehanga pāmahana he 0.08 nm/K anake. Mā te whakamahi i te hangarau whakatakoto kohu matū whakarewa-oraora mō te tipu epitaxial me te arotau tonu i te tukanga tipu, i angitu te hanga i ngā maramara whakanui kounga teitei. He tino rite ngā hua ine o te photoluminescence ki ngā hua whakatauira. Hei whakaiti i te kawenga wera me te whakatutuki i te tuku mana-teitei, kua whakawhanakehia ake te tukanga takai maramara semiconductor-taimana.
I muri i te otinga o te takai maramara, i whakahaerehia e te tīma he aromatawai whānui mō tana mahi taiaho. I roto i te aratau mahi tonu, mā te whakahaere i te mana papu, i te pāmahana totohu wera rānei, ka taea te whakarite ngāwari i te roangaru tuku i waenga i te 960 nm me te 1000 nm. Ina kei roto te mana papu i tētahi awhe motuhake, ka taea hoki e te taiaho te whakatutuki i te mahi roangaru-rua, me te wā roangaru tae atu ki te 39.4 nm. I tēnei wā, ka eke te mana ngaru tonu mōrahi ki te 3.8 W. I taua wā, ka mahi te taiaho i roto i te aratau taketake tata ki te rohe diffraction, me te tauwehenga kounga hihi M² o te 1.1 anake me te kanapa tae atu ki te 310 MW/cm²sr. I whakahaerehia hoki e te tīma he rangahau mō te mahi ngaru āhua tonu o terēseriI kitea angitu te tohu auau tapeke mā te whakauru i te karaihe whatu kore-raina LiB₃O₅ ki roto i te kōhao whakakoi, hei whakaū i te tukutahitanga o ngā roangaru takirua.
Nā tēnei hoahoa maramara auaha, kua tutuki te whakakotahitanga rauropi o te tātari whiwhinga puna irahiko me te tātari moroiti, e whakatakoto ana i te turanga hoahoa mō te whakatinanatanga o ngā pūtake taiaho tae-rua. Mō ngā tohu mahi, ka tutuki i tēnei taiaho tae-rua maramara-kotahi te kanapa teitei, te ngāwari teitei me te putanga hihi coaxial tika. Kei te taumata ārahi o te ao tōna kanapa i roto i te mara o nāianei o ngā taiaho haurua-tae-rua maramara-kotahi. Mō te tono mahi, e tumanakohia ana ka whakarei ake tēnei whakatutukitanga i te tika o te kitenga me te kaha ārai-whakararuraru o te lidar maha-tae i roto i ngā taiao uaua mā te whakamahi i tōna kanapa teitei me ngā āhuatanga tae-rua. I roto i te mara o ngā heru auau whatu, ka taea e tōna putanga roa-ngaru rua pumau te whakarato tautoko nui mō ngā tono pēnei i te ine tika o te hihi me te pūoko whatu taumira teitei.
Wā tuku: Hepetema-23-2025