Te whakaohooho i ngā harmonika tuarua i roto i te whānuitanga whānui
Mai i te kitenga o ngā pānga whatu kore-raina tuarua i ngā tau 1960, kua whakaohokia te hiahia whānui o ngā kairangahau, tae noa mai ki tēnei wā, i runga i te haurore tuarua, me ngā pānga auau, kua puta mai i te whānuitanga ultraviolet tino nui ki te whānuitanga infrared tawhiti ongā taiaho, i tino whakatairanga i te whanaketanga o te laser,whatute tukatuka mōhiohio, te whakaahua moroiti teitei me ētahi atu mara. E ai ki te kore-rainangā tirohangame te ariā whakapūtātanga, he hononga tata te pānga whatu kore-raina taurite ki te ōritetanga tioata, ā, ehara te tauwehenga kore-raina i te kore anake i roto i ngā pāpāho ōrite hurihanga kore-pokapū. Hei te pānga kore-raina tuarua tino taketake, ka tino āraihia e ngā haunga tuarua tō rātou whakaputanga me te whakamahinga whai hua i roto i te muka quartz nā te āhua kore-āhua me te ōritetanga o te hurihanga pokapū. I tēnei wā, ka taea e ngā tikanga whakapūtātanga (whakapūtātanga whatu, whakapūtātanga wera, whakapūtātanga mara hiko) te whakangaro hangai i te ōritetanga o te hurihanga pokapū rauemi o te muka whatu, ā, ka whakapai ake i te kore-raina tuarua o te muka whatu. Heoi, me whakamahi tēnei tikanga i te hangarau whakarite uaua me te tono nui, ā, ka taea anake te whakatutuki i ngā tikanga taurite āhua-wāhanga i ngā roangaru motuhake. Ko te mowhiti oro muka whatu i runga i te aratau pakitara echo ka whakawhāiti i te whakahihiri whānui o ngā haunga tuarua. Mā te pakaru i te ōritetanga o te hanganga mata o te muka, ka whakarei ake ngā haunga tuarua mata i roto i te muka hanganga motuhake ki tētahi taumata, engari ka whakawhirinaki tonu ki te pā o te papu femtosecond me te mana tihi tino teitei. Nō reira, ko te whakaputanga o ngā pānga whatu kore-raina tuarua i roto i ngā hanganga muka-katoa me te whakapai ake i te whai huatanga o te tahuritanga, inā koa te whakaputanga o ngā harmonics tuarua whānui-whānui i roto i te papu whatu iti-mana, tonu, koia ngā raruraru matua me whakatau i roto i te mara o ngā muka whatu kore-raina me ngā taputapu, ā, he hiranga pūtaiao nui me te uara tono whānui.
Kua whakaarohia e tētahi rōpū rangahau i Haina tētahi kaupapa whakauru ā-paparanga tioata gallium selenide me te muka micro-nano. Mā te whakamahi i te kore-raina tuarua teitei me te raupapatanga tawhiti o ngā tioata gallium selenide, ka tutukihia he tukanga whakaoho tuarua-haurua whānui me te huringa maha-auau, e whakarato ana i tētahi otinga hou mō te whakarei ake i ngā tukanga maha-taurite i roto i te muka me te whakarite i te haurua-haurua whānui.ngā pūtake māramaKo te whakaohooho whai hua o te pānga haurore tuarua me te pānga auau tapeke i roto i te kaupapa e whakawhirinaki ana ki ngā āhuatanga matua e toru e whai ake nei: te tawhiti taunekeneke roa o te māramatanga-matū i waenga i te gallium selenide memuka moroiti-nano, kua tutuki te kore-raina tuarua teitei me te raupapa awhe-roa o te karaihe gallium selenide paparanga, me ngā tikanga taurite ā-wāhanga o te auau taketake me te aratau takirua auau.
I roto i te whakamātautau, ko te muka micro-nano i whakaritea e te pūnaha whakawhāiti mura he rohe kōne ōrite i roto i te ota o te mirimita, e whakarato ana i te roa mahi kore-raina roa mō te rama papu me te ngaru haurore tuarua. Ko te kaha kore-raina tuarua o te karaihe gallium selenide whakauru neke atu i te 170 pm/V, he nui ake i te kaha kore-raina ā-roto o te muka whatu. Heoi anō, ko te hanganga roa-raupapa o te karaihe gallium selenide e whakarite ana i te pokanoa ā-wāhanga tonu o ngā haurore tuarua, e tuku ana i te mahi katoa ki te painga o te roa mahi kore-raina nui i roto i te muka micro-nano. He mea nui ake, ko te taurite ā-wāhanga i waenga i te aratau turanga whatu papu (HE11) me te aratau teitei haurore tuarua (EH11, HE31) ka tutuki mā te whakahaere i te diameter kōne, kātahi ka whakahaere i te marara o te arataki ngaru i te wā e whakarite ana i te muka micro-nano.
Ko ngā āhuatanga o runga ake nei te pūtake mō te whakaoho pai me te whānui o ngā haunga tuarua i roto i te muka micro-nano. E whakaatu ana te whakamātautau ka taea te whakatutuki i te putanga o ngā haunga tuarua i te taumata nanowatt i raro i te papu laser pulse picosecond 1550 nm, ā, ka taea hoki te whakaoho pai i ngā haunga tuarua i raro i te papu laser tonu o te roanga ngaru kotahi, ā, he iti te mana paepae ki te maha rau microwatts (Pikitia 1). I tua atu, ina whakaroahia te mārama papu ki ngā roanga ngaru rerekē e toru o te laser tonu (1270/1550/1590 nm), ka kitea e toru ngā haunga tuarua (2w1, 2w2, 2w3) me ngā tohu auau tapeke e toru (w1+w2, w1+w3, w2+w3) i ia roanga ngaru huringa auau e ono. Mā te whakakapi i te mārama papu ki tētahi pūtake mārama ultra-radiant light-emitting diode (SLED) me te whānui o te 79.3 nm, ka puta he haunga tuarua whānui-whānui me te whānui o te 28.3 nm (Pikitia 2). Hei tāpiritanga, ki te taea te whakamahi i te hangarau whakatakoto kohu matū hei whakakapi i te hangarau whakawhiti maroke i roto i tēnei rangahau, ā, ki te iti ake ngā paparanga o ngā tioata gallium selenide ka taea te whakatipu ki runga i te mata o te muka micro-nano i ngā tawhiti roa, e matapaetia ana ka pai ake te whai huatanga o te huringa harmonic tuarua.
PIK. 1 Pūnaha whakaputa haurore tuarua, ā, ko ngā hua he hanganga muka-katoa
Ahua 2 Te whakaranu i te maha-roa-ngaru me ngā harmonika tuarua whānui-whānui i raro i te papu whatu tonu
Wā tuku: Mei-20-2024