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, okhokele uphando kwiLebhu yeHybrid Photonics (HYLAB) kwiSikolo sobuNjineli be-EPFL, wachaza ukuba ngelixa amaza e-terahertz eveliswe kwindawo yelebhu ngaphambili, iindlela zangaphambili zixhomekeke ngokuyintloko kwiikristale ezininzi ukuvelisa amaza afanelekileyo. 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 zisenokusetyenziswa ukusasaza amaza e-terahertz aveliswa kukukhanya okuvela kwiifibers ezibonakalayo.
"Inyaniso yokuba isixhobo sethu sele sisebenzisa isignali eqhelekileyo ye-optical ngenene inzuzo, kuba ithetha ukuba ezi zitshiphu ezintsha zinokusetyenziswa kunye ne-laser yendabuko, esebenza kakuhle kakhulu kwaye iqondwa kakuhle. Kuthetha ukuba isixhobo sethu sinxibelelana ngocingo, "u-Benea-Chelmus wagxininisa. 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 ukuba uthumela imitha ye-terahertz ngesixhobo onomdla kuso kwaye uyihlalutye ukulinganisa impendulo yesixhobo, ngokuxhomekeke kulwakhiwo lwemolekyuli.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 ukubakho kwetekhnoloji ye-terahertz ephuhliswe kwilebhu yakhe ukuba ibe luncedo kwizicelo zequantum.
"Kukho imibuzo emininzi ebalulekileyo yokujongana nayo; umzekelo, sinomdla wokuba singasebenzisa iitshiphusi ezinjalo ukuvelisa iintlobo ezintsha zemitha ye-quantum enokuthi isetyenziswe ngamaxesha amafutshane kakhulu.
Ixesha lokuposa: Feb-14-2023
