Abaphandi baphuhlise i-chip ebhityileyo kakhulu enesekethe edibeneyo yefoto enokuthi isetyenziswe ukuxhaphaza into ebizwa ngokuba yi-terahertz gap - ilele phakathi kwe-0.3-30THz kwispectrum ye-electromagnetic - ye-spectroscopy kunye nokucinga.
Lo msantsa okwangoku uyinto yetekhnoloji efileyo, echaza ii-frequencies ezikhawuleza kakhulu kwii-electronics zanamhlanje kunye nezixhobo zonxibelelwano, kodwa zicotha kakhulu kwi-optics kunye ne-imaging applications.
Nangona kunjalo, i-chip entsha yenzululwazi ngoku ibenza bakwazi ukuvelisa amaza e-terahertz anefrikhwensi elungiselelweyo, ubude be-waveleng, i-amplitude kunye nesigaba.Olo lawulo luchanekileyo lunokwenza ukuba kusetyenziswe ukusasazeka kwemitha ye-terahertz kwisizukulwana esilandelayo kwizinto zombane kunye nezamehlo.
Umsebenzi, oqhutywe phakathi kwe-EPFL, i-ETH Zurich kunye neDyunivesithi yaseHarvard, ipapashwe kwiUnxibelelwano lweNdalo.
UCristina Benea-Chelmus, owayekhokela uphando kwiLabhoratri yeHybrid Photonics (HYLAB) kwiSikolo sobuNjineli be-EPFL, wachaza ukuba ngelixa amaza e-terahertz eveliswe kwindawo yelebhu ngaphambili, iindlela zangaphambili zixhomekeke ngokuyintloko kwiikristale ezininzi ukuvelisa ilungelo. iifrikhwensi.Endaweni yoko, ukusetyenziswa kwelebhu yakhe yesekethe yefotonic, eyenziwe nge-lithium niobate yaze yaculwa kakuhle kwisikali se-nanometer ngabadibanisi beDyunivesithi yaseHarvard, yenza indlela elungelelanisiweyo ngakumbi.Ukusetyenziswa kwe-silicon substrate kwenza ukuba isixhobo silungele ukudityaniswa kwiinkqubo zombane kunye nezamehlo.
“Ukuvelisa amaza ngamaza aphezulu kakhulu kulucelomngeni kakhulu, kwaye zimbalwa iindlela ezinokuthi zivelise iipateni ezizodwa,” utshilo.“Ngoku siyakwazi ukwenza ubunjineli obuchanekileyo bexeshana lamaza e-terahertz – ukutsho ukuba, 'Ndifuna imo yamaza ejongeka ngolu hlobo.'
Ukufezekisa oku, ilebhu kaBenea-Chelmus yayila ulungelelwaniso lwetshiphu yeetshaneli, ezibizwa ngokuba zii-waveguides, ngendlela yokuba ii-eriyali ezincinci zisetyenziselwe ukusasaza amaza e-terahertz aveliswa kukukhanya okuvela kwiifibers ezibonakalayo.
“Inyani yokuba isixhobo sethu sele sisebenzisa isiginali ye-optical eqhelekileyo iyinzuzo ngokwenene, kuba oko kuthetha ukuba ezi chips zitsha zinokusetyenziswa ngeelaser zesintu, ezisebenza kakuhle kakhulu kwaye ziqondwa kakuhle kakhulu.Kuthetha ukuba isixhobo sethu siyahambelana nonxibelelwano,” utshilo uBenea-Chelmus.Wongeze ukuba izixhobo ezincinci ezithumela kwaye zamkele imiqondiso kuluhlu lwe-terahertz zinokudlala indima ephambili kwiinkqubo zeselula zesizukulwana sesithandathu (6G).
Kwihlabathi le-optics, i-Benea-Chelmus ibona amandla athile e-lithium niobate chips kwi-spectroscopy kunye nokucinga.Ukongeza kokungeyo-ionising, amaza e-terahertz ane-eneji esezantsi kakhulu kunezinye iindidi ezininzi zamaza (ezifana nee-x-reyi) asetyenziswayo ngoku ukubonelela ngolwazi malunga nokwakheka kwemathiriyeli - nokuba lithambo okanye ipeyinti ye-oyile.Isixhobo esibambeneyo, esingonakalisi njengetshiphu ye-lithium niobate ngoko ke sinokubonelela ngenye indlela engangeneleliyo kubuchule bangoku be-spectrographic.
“Ungacinga ngokuthumela imitha ye-terahertz ngesixhobo onomdla kuso kwaye uyihlalutye ukulinganisa impendulo yesixhobo, ngokuxhomekeke kubume bayo bemolekyuli.Konke oku kwisixhobo esincinci kunentloko yematshisi,” utshilo.
Okulandelayo, i-Benea-Chelmus iceba ukugxila ekutshintsheni iipropathi ze-chip ze-waveguides kunye nee-eriyali ukuya kubunjineli be-waveforms kunye ne-amplitudes enkulu, kunye ne-frequencies ephuculwe ngakumbi kunye namazinga okubola.Ukwabona itekhnoloji ye-terahertz ephuhliswe kwilebhu yakhe ukuba ibe luncedo kwizicelo zequantum.
“Kukho imibuzo emininzi ekufuneka iphendulwe;umzekelo, sinomdla wokuba singasebenzisa iitshiphusi ezinjalo ukuvelisa iintlobo ezintsha zemitha yemitha enokuthi iguqulwe ngamaxesha amafutshane kakhulu.Amaza anjalo kwisayensi yobungakanani anokusetyenziswa ukulawula izinto zequantum,” uqukumbele watsho.
Ixesha lokuposa: Feb-14-2023