Itsinda ryitumanaho ryiza, ultra-thin optique resonator

Itsinda ryitumanaho ryiza, ultra-thin optique resonator
Optical resonator irashobora gutandukanya uburebure bwumurongo wumucyo mumwanya muto, kandi bifite akamaro gakomeye mumikoranire yumucyo,itumanaho ryiza, kumva neza, no guhuza optique. Ingano ya resonator ahanini iterwa nibiranga ibintu hamwe nuburebure bwumurongo, urugero, resonator ya silicon ikorera mumurongo wegereye infrarafarike ikenera ibikoresho bya optique ya nanometero amagana no hejuru. Mu myaka yashize, ultra-thin planar optique resonator yakuruye cyane kuberako ishobora gukoreshwa muburyo bwimiterere, amashusho ya holographe, amashusho yumucyo hamwe nibikoresho bya optoelectronic. Nigute wagabanya umubyimba wa resonator ya planar nikimwe mubibazo bitoroshye abashakashatsi bahura nabyo.
Bitandukanye nibikoresho gakondo bya semiconductor, insulator ya 3D topologiya (nka bismuth telluride, antimony telluride, bismuth selenide, nibindi) nibikoresho bishya byamakuru hamwe nubutaka bwikingira bwa topologiya hamwe na leta ya insulator. Imiterere yubuso irinzwe nuburinganire bwigihe cyo guhinduranya, kandi electron zayo ntizatatanye numwanda utari magnetique, ufite ibyifuzo byingenzi byo gukoresha mumashanyarazi make ya comptabilite nibikoresho bya spintronic. Muri icyo gihe, ibikoresho bya insulirasi ya topologiya nabyo byerekana ibintu byiza bya optique, nkibipimo byangirika cyane, binini bidafite umurongooptiquecoefficient, yagutse ikora ibintu byinshi, guhuza, guhuza byoroshye, nibindi, bitanga urubuga rushya rwo kumenyekanisha urumuri kandiibikoresho bya optoelectronic.
Itsinda ry’ubushakashatsi mu Bushinwa ryatanze uburyo bwo guhimba ultra-thin optique resonator ukoresheje ahantu hanini hakura bismuth telluride topologiya insulator nanofilms. Umuyoboro wa optique werekana ibimenyetso biranga resonance yakira hafi ya bande ya infragre. Bismuth telluride ifite igipimo cyinshi cyo kwangirika kirenze 6 mugice cyitumanaho rya optique (kirenze icyerekezo cyo kwanga ibikoresho gakondo byerekana ibintu byoroshye nka silicon na germanium), kugirango uburebure bwa cavit optique bugere kuri kimwe cya makumyabiri cya resonance. uburebure. Muri icyo gihe, resonator ya optique ishyirwa kuri kristu imwe ya fotonike, kandi ingaruka ya electromagnetique iterwa no gukorera mu mucyo igaragara mu itsinda ry’itumanaho rya optique, ibyo bikaba biterwa no guhuza resonator na plasmon ya Tamm no kwivanga kwangiza. . Igisubizo cyibisubizo byingaruka ziterwa nubunini bwa optique ya resonator kandi irakomeye muguhindura icyerekezo cyo kwangiza ibidukikije. Uyu murimo ufungura inzira nshya yo kumenya ultrathin optique cavity, topologiya insulator yibikoresho bya tekinike hamwe nibikoresho bya optoelectronic.
Nkuko bigaragara muri FIG. 1a na 1b, resonator ya optique igizwe ahanini na bismuth telluride topologiya insulator hamwe na nanofilm ya silver. Bismuth telluride nanofilm yateguwe na magnetron sputtering ifite ahantu hanini kandi neza. Iyo umubyimba wa bismuth telluride na firime ya silver ari 42 nm na 30 nm, kimwe, cavit optique yerekana kwinjirira gukomeye mumurongo wa 1100 ~ 1800 nm (Ishusho 1c). Igihe abashakashatsi bahurizaga uyu mwobo wa optique kuri kristu ya fotonike ikozwe mu buryo butandukanye bwa Ta2O5 (182 nm) na SiO2 (260 nm) ibice (Ishusho 1e), ikibaya cyihariye cyo kwinjiza (Ishusho 1f) cyagaragaye hafi y’imisozi yambere ya rezonone (~ 1550 nm), bisa ningaruka ya electromagnetique iterwa no gukorera mu mucyo ikorwa na sisitemu ya atome.

Ibikoresho bya bismuth telluride byaranzwe no kohereza electron microscopi na ellipsometrie. FIG. 2a-2c yerekana kwanduza micrografi ya elegitoronike (amashusho y’ibisubizo bihanitse) hamwe nuburyo bwatoranijwe bwa electron butandukanye bwa bismuth telluride nanofilms. Birashobora kugaragara ku gishushanyo ko bismuth telluride nanofilm yateguwe ari ibikoresho bya polycristaline, kandi icyerekezo nyamukuru cyo gukura ni (015) indege ya kirisiti. Igicapo 2d-2f cerekana urutonde rugoye rwo kwangirika kwa bismuth telluride yapimwe na ellipsometero hamwe nubuso bwashyizweho hamwe na reta ya reta igoye. Ibisubizo byerekana ko coefficente yo kuzimangana yubuso bwa leta iruta igipimo cyangirika kiri hagati ya 230 ~ 1930 nm, cyerekana ibimenyetso bisa nibyuma. Ibipimo byerekana umubiri birenze 6 mugihe uburebure bwumuraba burenze 1385 nm, bukaba buri hejuru cyane ugereranije nubwa silikoni, germanium nibindi bikoresho gakondo byangirika cyane muri iri tsinda, bitanga umusingi wo gutegura ultra -kuri optiki ya resonator. Abashakashatsi berekanye ko aribwo bwa mbere hamenyekanye ko hashyizwe ahagaragara insimburangingo ya topologiya insimburangingo ya planari optique ifite umubyimba wa nanometero icumi gusa mu itsinda ryitumanaho rya optique. Icyakurikiyeho, uburyo bwo kwinjiza ibintu hamwe nuburebure bwa resonance yumurambararo wa ultra-thin optique cavity yapimwe nubunini bwa bismuth telluride. Hanyuma, ingaruka zuburebure bwa firime ya feza kuri electromagnetique iterwa na transparency spectra muri bismuth telluride nanocavity / fotonike ya kristu yubatswe

Mugutegura ahantu hanini hakeye ya firime ya bismuth telluride ya insulirasi ya topologiya, hanyuma ukifashisha indangagaciro ya ultra-high reaction ya Bismuth telluride ibikoresho hafi yumurongo wa infragre, haboneka umwobo wa optique ufite umubyimba wa nanometero icumi gusa. Ultra-thin optique cavity irashobora gutahura neza urumuri rwumucyo rwinjira mumurongo uri hafi ya infragre, kandi ifite agaciro gakomeye mugutezimbere ibikoresho bya optoelectronic mumashanyarazi. Umubyimba wa bismuth telluride optique cavit ni umurongo ugereranije nuburebure bwa resonant, kandi ni muto ugereranije nubwa silikoni isa na germanium optique. Muri icyo gihe, bismuth telluride optique cavity ihujwe na kristu ya fotonike kugirango igere ku ngaruka zidasanzwe za optique zisa na electromagnetique iterwa no gukorera mu mucyo wa sisitemu ya atome, itanga uburyo bushya bwo kugenzura imiterere ya microstructure. Ubu bushakashatsi bugira uruhare runini mugutezimbere ubushakashatsi bwibikoresho bya insulire ya topologiya mugucunga urumuri nibikoresho bikora neza.