Sabuwar duniyar na'urorin optoelectronic

Sabuwar duniya taoptoelectronic na'urorin

Masu bincike a Cibiyar Fasaha ta Technion-Israel sun haɓaka juzu'in sarrafawa tareLaser na ganibisa tushen atomic Layer guda ɗaya.Wannan binciken ya yiwu ne ta hanyar ma'amala mai dogaro da kambi mai ma'ana tsakanin nau'in atomic Layer guda ɗaya da madaidaicin lattice na hoton hoto, wanda ke goyan bayan babban kwarin juyi mai tsayi ta hanyar Rashaba-nau'in juzu'i na rabe-raben photons na jihohin da aka daure a cikin ci gaba.
Sakamakon, wanda aka buga a cikin Materials Nature kuma wanda aka ba da haske a cikin taƙaitaccen bincikensa, ya ba da hanya don nazarin abubuwan da ke da alaƙa da juna a cikin na gargajiya da na gargajiya.tsarin ƙididdiga, kuma yana buɗe sabbin hanyoyin bincike na asali da aikace-aikacen electron da photon spin a cikin na'urorin optoelectronic.Madogararsa na gani yana haɗa yanayin photon tare da canjin lantarki, wanda ke ba da hanya don nazarin musayar bayanai tsakanin electrons da photons da haɓaka na'urorin optoelectronic na ci gaba.

Spin Valley Optical microcavities an gina su ta hanyar haɗakar da lattices na photonic spin lattices tare da inversion asymmetry (yankin core rawaya) da inversion symmetry (yankin cladding cyan).
Domin gina waɗannan hanyoyin, abin da ake buƙata shine a kawar da lalatawar kashin baya tsakanin jihohi biyu masu gaba da juna a cikin ɓangaren photon ko na lantarki.Yawancin lokaci ana samun wannan ta hanyar amfani da filin maganadisu a ƙarƙashin tasirin Faraday ko Zeeman, kodayake waɗannan hanyoyin galibi suna buƙatar filin maganadisu mai ƙarfi kuma ba za su iya samar da microsource ba.Wata hanya mai ban sha'awa ta dogara ne akan tsarin kamara na geometric wanda ke amfani da filin maganadisu na wucin gadi don samar da rabe-raben yanayi na photon a cikin sararin samaniya.
Abin takaici, abubuwan lura da aka yi a baya na jihohin rarrabuwar kawuna sun dogara kacokam kan yanayin yaɗa ƙananan abubuwa, waɗanda ke haifar da mummuna madaidaicin sararin samaniya da na ɗan lokaci na tushe.Hakanan wannan tsarin yana da cikas ta yanayin sarrafa juzu'i na toshewar kayan samun Laser, wanda ba za a iya amfani da shi cikin sauƙi ko sarrafa shi ba.hanyoyin haske, musamman idan babu filayen maganadisu a yanayin zafi.
Don cimma manyan juzu'i masu rarraba-Q, masu binciken sun gina lattices na hoton hoto tare da alamomi daban-daban, gami da cibiya tare da asymmetry inversion da ambulaf mai jujjuyawar da aka haɗa tare da Layer guda ɗaya na WS2, don samar da ƙwarin ƙwanƙwasa a gefe.Asalin sigar asymmetric lattice ɗin da masu binciken ke amfani da shi yana da mahimman kaddarorin guda biyu.
Mai iya sarrafa juzu'i mai dogaro da jujjuyawar juzu'i wanda ya haifar da bambance-bambancen lokaci na geometric na nanoporous anisotropic iri-iri wanda ya ƙunshi su.Wannan vector yana raba bandungiyar lalatawar juzu'i zuwa rassa biyu masu jujjuyawa a cikin sararin samaniya, wanda aka sani da tasirin photonic Rushberg.
Jihohi masu tsayi masu tsayi (quasi) masu ɗaure a cikin ci gaba, wato ±K (Brillouin band Angle) ƙwarin ƙwanƙwasa na ƙwanƙwasa a gefen rassan ɓangarorin juzu'i, suna samar da madaidaicin matsayi na daidaitattun amplitudes.
Farfesa Koren ya lura: "Mun yi amfani da WS2 monolides a matsayin kayan samun riba saboda wannan madaidaiciyar band-gizo na karfe disulfide yana da kwarin kwarin kwarin kwarin da aka yi nazari sosai a matsayin madadin mai ɗaukar bayanai a cikin kwarin lantarki.Musamman, ± K 'kwarin excitons (wanda ke haskakawa a cikin nau'i na ƙirar juzu'i-polarized dipole emitters) za a iya zaɓin farin ciki ta hanyar haske-polarized haske bisa ga ka'idodin zaɓin kwarin, don haka yana sarrafa sarrafa sigina kyauta.tushen gani.
A cikin microcavity mai haɗe-haɗe-haɗe-haɗe-layi-layi, ±K 'kwarin excitons ana haɗe su zuwa ± K juzu'in kwarin kwarin ta hanyar daidaitawar polarization, kuma ana samun laser exciton Laser a dakin zafin jiki ta hanyar haske mai ƙarfi.A lokaci guda, daLaserTsarin yana fitar da farkon lokaci mai zaman kansa ± K 'kwarin excitons don nemo mafi ƙarancin yanayin asarar tsarin da sake kafa ma'amalar kulle-kulle dangane da yanayin lissafi da ke gaban kwarin ±K.
Haɗin gwiwar kwarin da wannan injin Laser ke tafiyar da shi yana kawar da buƙatar ƙarancin zafin zafi na warwatse lokaci-lokaci.Bugu da kari, mafi ƙarancin yanayin asarar Laser na Rashba monolayer za a iya canza shi ta hanyar madaidaiciyar famfo mai madauwari, wanda ke ba da hanya don sarrafa ƙarfin laser da daidaituwar sararin samaniya. ”
Farfesa Hasman ya yi bayani: “An bayyanaphotonicSpin Valley Tasirin Rashba yana ba da wata hanya ta gaba ɗaya don gina hanyoyin gani na gani mai fitar da ƙasa.Haɗin gwiwar kwarin da aka nuna a cikin haɗaɗɗun juzu'in juzu'i guda ɗaya yana kawo mana mataki ɗaya kusa da cimma daidaituwar bayanan ƙididdigewa tsakanin ± K 'valley excitons ta qubits.
Tun da dadewa, ƙungiyarmu tana haɓaka na'urorin motsa jiki, ta yin amfani da ƙirar photon a matsayin ingantaccen kayan aiki don sarrafa halayen igiyoyin lantarki.A cikin 2018, cike da sha'awar kwarin pseudo-spin a cikin kayan sassa biyu, mun fara aikin dogon lokaci don bincika ikon sarrafa ma'aunin ma'aunin atomatik a cikin rashin filayen maganadisu.Muna amfani da tsarin lahani na Berry wanda ba na gida ba don magance matsalar samun daidaitaccen lokaci na geometric daga exciton kwarin kwarin.
Koyaya, saboda rashin ingantacciyar hanyar daidaitawa tsakanin abubuwan haɓakawa, ainihin madaidaicin daidaitaccen matsayi na ƙwanƙolin kwari da yawa a cikin tushen hasken Rashuba guda ɗaya wanda aka cimma ya kasance ba a warware ba.Wannan matsala ta sa mu yi tunani game da samfurin Rashuba na high Q photon.Bayan sabunta sabbin hanyoyin jiki, mun aiwatar da Laser mai Layer Layer Rashuba wanda aka bayyana a cikin wannan takarda.
Wannan nasarar ta buɗe hanya don nazarin abubuwan da suka dace na daidaita juzu'i a cikin filaye na gargajiya da ƙididdiga, kuma suna buɗe sabuwar hanya don ainihin bincike da amfani da na'urorin spintronic da photonic optoelectronic.