Reiti auau teitei rawa o te taiaho pupuhi

Reiti auau teitei rawa o te taiaho pupuhi

I roto i te ao moroiti o te taunekeneke i waenga i te mārama me te matū, ka mahi ngā pāorooro tere auau tino teitei (UHRP) hei rangatira tika mō te wā - ka neke atu i te piriona ngā wā i ia hekona (1GHz), ka hopu i ngā tapumati ngota o ngā pūtau matepukupuku i roto i te whakaahua āwhata, ka kawe i ngā raraunga nui i roto i te whakawhitiwhiti muka whatu, me te whakatikatika i ngā taunga roangaru o ngā whetū i roto i ngā karu tiro. Ina koa i roto i te peke o te taha kite o te lidar, ko ngā taiaho pāorooro tere auau tino teitei terahertz (100-300 GHz) kei te noho hei taputapu kaha ki te uru atu ki te paparanga pokanoa, me te hanga anō i ngā rohe o te tirohanga toru-ahu me te mana whakahaere ā-wāhi-wā i te taumata photon. I tēnei wā, ko te whakamahi i ngā hanganga moroiti horihori, pērā i ngā kōhao mowhiti moroiti e hiahia ana ki te tika tukatuka nanoscale hei whakaputa i te whakaranu ngaru-whā (FWM), ko tētahi o ngā tikanga matua hei whiwhi pāorooro whatu tere auau tino teitei. Kei te arotahi ngā kaipūtaiao ki te whakaoti rapanga hangarau i roto i te tukatuka o ngā hanganga tino-pai, te raruraru whakatikatika auau i te wā tīmatanga pāorooro, me te raruraru whai huatanga tahuritanga i muri i te whakaputa pāorooro. Ko tētahi atu huarahi ko te whakamahi i ngā muka tino kore-raina, me te whakamahi i te pānga kore-pūmautanga whakarerekētanga, te pānga FWM rānei i roto i te kōhao taiaho hei whakaoho i ngā UHRP. Tae noa ki tēnei wā, me whai tonu tātou i tētahi "kaiwhakaahua wā" matatau ake.

Ko te tukanga whakaputa UHRP mā te werohanga i ngā pātere tino tere hei whakaoho i te pānga FWM marara e whakaahuatia ana ko te "whakakā tino tere". He rerekē i te kaupapa kōhao mowhiti moroiti horihori kua whakahuatia ake nei e hiahia ana kia pupuhi tonu, kia whakatikatika tika te tango i te whakahāngai hei whakahaere i te whakaputa pātere, me te whakamahi i ngā pāpāho tino kore-raina hei whakaheke i te paepae FWM, ko tēnei "whakakā" e whakawhirinaki ana ki ngā āhuatanga mana tihi o ngā pātere tino tere hei whakaoho tika i te FWM, ā, i muri i te "whakakā whakaweto", ka tutuki te UHRP whaiaro-tonu.

E whakaatu ana te Pikitia 1 i te tikanga matua o te whakatutuki i te whakaritenga-ake o te pāorooro i runga i te whakaoho tere o te pāorooro purapura o ngā kōhao mowhiti muka marara. Ko te pāorooro purapura poto rawa i werohia ki waho (wā T0, auau tāruarua F) hei "pūtake mura" hei whakaoho i te mara pāorooro mana-teitei i roto i te kōhao marara. Ka mahi tahi te waeine whakanui ā-roto me te kaiwhakaahua hihi hei huri i te kaha pāorooro purapura hei urupare hihi āhua-heru mā te whakahaere hononga i roto i te rohe auau-wā. Ka pakaru tēnei tukanga i ngā herenga o te papu tonu tuku iho: ka mutu te pāorooro purapura ina tae ki te paepae FWM marara, ā, ka mau tonu te kōhao marara i te āhua whakaritenga-ake o te pāorooro mā te taurite hihiri o te whakanui me te ngaronga, me te auau tāruarua pāorooro ko Fs (e rite ana ki te auau ā-roto FF me te wā T o te kōhao).

I whakahaerehia hoki e tēnei rangahau te manatoko ariā. I runga i ngā tawhā i whakamahia i roto i te whakatakotoranga whakamātautau me te 1pstaiaho pāorooro tino terehei te mara tuatahi, i whakahaerehia he whakatauira tau i runga i te tukanga whanaketanga o te rohe wā me te auau o te pāoro i roto i te kōhao taiaho. I kitea e toru ngā wāhanga o te pāoro: te wehenga pāoro, te oscillation auau pāoro, me te tohatoha ōrite o te pāoro puta noa i te kōhao taiaho katoa. Ka whakamanahia hoki e tēnei hua tau ngā āhuatanga whakarite-ake o tereera pāorooro.

Mā te whakaoho i te pānga whakaranu ngaru-whā i roto i te kōhao mowhiti muka marara mā te mura o te pao purapura tere rawa, i tutuki pai te whakaputa me te pupuri i a ia anō o ngā pao auau auau tino-teitei sub-THZ (putanga pumau o te mana 0.5W i muri i te whakaweto o te purapura), e whakarato ana i tētahi momo pūtake mārama hou mō te mara lidar: Ka taea e tōna auau taumata sub-THZ te whakarei ake i te taumira kapua pūwāhi ki te taumata mirimita. Ka whakaitihia e te āhuatanga pupuri-whaiaro pao te whakapaunga pūngao pūnaha. Ka whakarite te hanganga muka-katoa i te mahi pumau teitei i roto i te whitiki haumaru kanohi 1.5 μm. I te titiro whakamua, e tumanakohia ana ka akiakihia e tēnei hangarau te whanaketanga o te lidar e mau ana i te waka ki te whakaitiiti (i runga i ngā tātari-iti MZI) me te kimi tawhiti (te whakawhānui mana ki > 1W), me te urutau atu ki ngā whakaritenga tirohanga o ngā taiao uaua mā te mura kua whakaritea maha-roa-ngaru me te whakahaere atamai.