Roopu whakawhitiwhiti whatu, resonator whatu kikokore

Roopu whakawhitiwhiti whatu, resonator whatu kikokore
Ka taea e nga resonators whatu te tautuhi i nga roangaru motuhake o nga ngaru marama i roto i te waahi iti, me nga tono nui i roto i te taunekeneke-marama,whakawhitiwhiti whatu, te rongo whatu, me te whakauru whatu. Ko te rahi o te resonator e whakawhirinaki ana ki nga ahuatanga o nga rawa me te roangaru whakahaere, hei tauira, ko nga resonators silicon e mahi ana i roto i te roopu infrared tata e hiahia ana ki nga hanganga whatu o nga rau nanometers me runga ake. I roto i nga tau tata nei, kua aro nui nga resonator mata o te mahere angiangi na runga i o raatau tono i roto i te tae hanganga, te whakaahua holographic, te ture mara marama me nga taputapu optoelectronic. Me pehea te whakaheke i te matotoru o nga resonator mahere ko tetahi o nga raru uaua e pa ana ki nga kairangahau.
He rereke mai i nga rauemi hikohiko tuku iho, ko nga insulators topological 3D (pēnei i te bismuth telluride, antimony telluride, bismuth selenide, me etahi atu) he rauemi korero hou me nga ahua o te mata whakarewa topologically me nga ahuatanga insulator. Ko te ahua o te mata e tiakina ana e te hangarite o te hurihanga o te wa, a, kaore ona irahiko i marara e nga poke kore-aukume, he mea nui ki te tono i roto i te rorohiko iti-mana me nga taputapu spintronic. I te wa ano, ka whakaatu ano hoki nga rauemi insulator topological i nga ahuatanga whatu tino pai, penei i te taupū whakaata teitei, te rahi kore-raina.whatuwhakarea, whanui awhe awhe mahi, tunability, whakaurunga ngawari, me etahi atu, e whakarato ana i te kaupapa hou mo te whakatinanatanga o te ture marama me tenga taputapu optoelectronic.
Kua whakatakotohia e tetahi roopu rangahau i Haina he tikanga mo te hanga i nga resonator whatu kikokore ma te whakamahi i nga waahanga nui e tipu ana i te bismuth telluride topological insulator nanofilms. Ko te kohao whatu e whakaatu ana i nga ahuatanga o te resonance absorption i roto i te roopu infrared tata. Ko te Bismuth telluride he tino nui te taupae whakaata o te neke atu i te 6 i roto i te roopu whakawhitiwhiti whatu (he teitei ake i te tohu whakaata o nga mea tuku iho o nga taonga tohu whakaata teitei penei i te silicon me te germanium), kia taea ai te matotoru o te kohao whatu ki te kotahi-rua tekau o te resonance. roangaru. I te wa ano, ka tukuna te resonator whatu ki runga i te karaihe whakaahua kotahi-ahu, a ka kitea he huanga maramara hiko i roto i te roopu korero whatu, na te hono o te resonator me te Tamm plasmon me tona wawaotanga kino. . Ko te whakautu matakite o tenei paanga ka whakawhirinaki ki te matotoru o te resonator whatu me te pakari ki te whakarereketanga o te taupae whakaata ambient. Ka whakatuwherahia e tenei mahi he huarahi hou mo te whakatinanatanga o te kohao whatu ultrathin, te ture hiranga rauemi insulator topological me nga taputapu optoelectronic.
Ka rite ki te whakaatu i te FIG. 1a me 1b, ko te resonator whatu te nuinga tito o te bismuth telluride topological insulator me nanofilms hiriwa. Ko nga nanofilms bismuth telluride i mahia e te magnetron sputtering he nui te horahanga me te papatahi pai. A, no te te matotoru o te bismuth telluride me kiriata hiriwa ko 42 nm me 30 nm, aua, te kōhao whatu whakaatu kaha resonance absorption i roto i te ropu o 1100 ~ 1800 nm (Figure 1c). I te wa i whakaurua ai e nga kairangahau tenei kohao whatu ki runga i te karaihe whakaahua i hangaia mai i nga papa tauutuutu o Ta2O5 (182 nm) me te SiO2 (260 nm) papa (Whakaahua 1e), ka puta mai he awaawa whakauru motuhake (Whakaahua 1f) tata ki te tihi o te resonant absorption taketake (~ 1550 nm), he rite tonu ki te awenga maramatanga hiko i mahia e nga punaha ngota.

Ko te taonga bismuth telluride i tohuhia e te tuku irahiko microscopy me te ellipsometry. FIG. Ko te 2a-2c e whakaatu ana i nga moroiti irahiko tuku (whakaahua teitei-taumira) me nga tauira whakarara irahiko kua tohua o te bismuth telluride nanofilms. Ka kitea mai i te ahua ko nga nanofilms bismuth telluride kua oti te hanga he rauemi polycrystalline, a ko te kaupapa tipu matua ko (015) rererangi karaihe. Ko te Whakaahua 2d-2f e whakaatu ana i te taupū mataotao matatini o te bismuth telluride i inehia e te ellipsometer me te ahua o te mata kua whakauruhia me te taupae paanui matatini. Ko nga hua e whakaatu ana ko te whakarea mate o te ahua o te mata he nui ake i te tohu tohu i roto i te awhe o te 230 ~ 1930 nm, e whakaatu ana i nga ahuatanga o te whakarewa. Ko te tohu tohu o te tinana he nui ake i te 6 ka nui ake te roangaru i te 1385 nm, he nui ake i tera o te silicon, germanium me etahi atu taonga tohu tohu-nui tuku iho i roto i tenei roopu, e whakatakoto ana i te turanga mo te whakarite i te ultra. -resonators whatu kikokore. E ai ki nga kairangahau koinei te kitenga tuatahi o te kohao mata o te insulator topological me te matotoru o te tekau nanometers anake i roto i te roopu korero whatu. I muri mai, i whangangahia te awhiowhiotanga me te roangaru orooro o te kohao whatu kikokore ki te matotoru o te bismuth telluride. Ka mutu, ka tirotirohia te paanga o te matotoru kiriata hiriwa ki runga i te hiihanga maramatanga hiko i roto i te bismuth telluride nanocavity/hanganga karaihe whakaahua.

Ma te whakareri i nga kiriata angiangi papatahi nui o te insulators topological bismuth telluride, me te tango painga o te taupū tino teitei o nga rauemi Bismuth telluride i roto i te roopu infrared tata, ka riro mai he kohao whatu planar me te matotoru o te tekau nanometer anake. Ka taea e te kohanga whatu ultra-aniangi te mohio he pai te whakaurunga o te marama resonant i roto i te roopu infrared tata, a he uara tono nui i roto i te whanaketanga o nga taputapu optoelectronic i roto i te roopu whakawhitiwhiti korero. Ko te matotoru o te kohanga whatu bismuth telluride he raina ki te roangaru orooro, a he iti ake i tera o te kohao mata o te silicon me te germanium. I te wa ano, ka whakauruhia te kohanga whatu bismuth telluride ki te karaihe photonic ki te whakatutuki i te huanga whatu anomalous e rite ana ki te maamaatanga hiko o te punaha ngota, e whakarato ana i tetahi tikanga hou mo te whakaritenga hihinga o te microstructure. Ka whai waahi tenei rangahau ki te whakatairanga i te rangahau o nga rawa insulator topological i roto i nga ture marama me nga taputapu mahi whatu.