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  • Li-chips tse sebelisang li-circuits tse kopaneng tsa photonic li ka thusa ho koala lekhalo la 'terahertz'.

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Li-chips tse sebelisang li-circuits tse kopaneng tsa photonic li ka thusa ho koala lekhalo la 'terahertz'.

1

 

bafuputsi ba thehile chip e tšesaane haholo e nang le potoloho e kopaneng ea photonic e ka sebelisetsoang ho sebelisa se bitsoang lekhalo la terahertz - le pakeng tsa 0.3-30THz le mabone a motlakase - bakeng sa spectroscopy le litšoantšo.

Lekhalo lena hajoale ke ntho ea sebaka se shoeleng sa tekhenoloji, se hlalosang maqhubu a lebelo haholo bakeng sa lisebelisoa tsa kajeno tsa elektroniki le likhokahano, empa a lieha haholo bakeng sa lits'ebetso tsa optics le tsa litšoantšo.

Leha ho le joalo, chip e ncha ea bo-ramahlale hona joale e ba nolofalletsa ho hlahisa maqhubu a terahertz a nang le maqhubu a lokiselitsoeng, bolelele ba maqhubu, amplitude le phase. Taolo e nepahetseng joalo e ka etsa hore mahlaseli a terahertz a sebelisoe bakeng sa lits'ebetso tsa moloko o latelang libakeng tsa elektroniki le tsa optical.

Mosebetsi, o entsoeng lipakeng tsa EPFL, ETH Zurich le Univesithi ea Harvard, o phatlalalitsoe hoTlhaho Puisano.

Cristina Benea-Chelmus, ea etelletseng lipatlisiso ho Laboratori ea Hybrid Photonics (HYLAB) Sekolong sa Boenjiniere sa EPFL, o hlalositse hore le ha maqhubu a terahertz a hlahisitsoe sebakeng sa laborateng pele, mekhoa e fetileng e ne e itšetlehile haholo ka likristale tse ngata ho hlahisa maqhubu a nepahetseng. Ho e-na le hoo, tšebeliso ea lab ea hae ea potoloho ea photonic, e entsoeng ka lithium niobate 'me e behiloe hantle sekaleng sa nanometer ke basebetsi-'moho Univesithing ea Harvard, e etsa hore ho be le mokhoa o bonolo haholoanyane. Tšebeliso ea silicon substrate e boetse e etsa hore sesebelisoa se loketse ho kopanngoa le mekhoa ea elektronike le ea optical.

"Ho hlahisa maqhubu ka maqhubu a phahameng haholo ho thata haholo, 'me ho na le mekhoa e fokolang e ka e hlahisang ka mekhoa e ikhethang," o hlalositse. "Hona joale re khona ho etsa sebopeho se nepahetseng sa maqhubu a terahertz - ho re, 'Ke batla sebopeho sa maqhubu se shebahalang tjena.'

Ho fihlela sena, lab ea Benea-Chelmus e ile ea theha tlhophiso ea likanale tsa chip, tse bitsoang waveguides, ka tsela eo li-antenna tse nyane li ka sebelisoang ho hasanya maqhubu a terahertz a hlahisoang ke khanya e tsoang ho optical fibres.

"Taba ea hore sesebelisoa sa rona se se se ntse se sebelisa letšoao le tloaelehileng la optical e hlile e le molemo, hobane ho bolela hore li-chips tsena tse ncha li ka sebelisoa ka li-lasers tsa setso, tse sebetsang hantle haholo 'me li utloisisoa hantle haholo. "Ho bolela hore sesebelisoa sa rona se lumellana le mehala ea puisano," Benea-Chelmus a hatisa. O boetse a re lisebelisoa tse nyane tse romellang le ho amohela lipontšo ka har'a terahertz li ka bapala karolo ea bohlokoa lits'ebetsong tsa mehala tsa moloko oa botšelela (6G).

Lefats'eng la optics, Benea-Chelmus e bona monyetla o ikhethang oa li-chips tsa lithium niobate tse nyane ho spectroscopy le litšoantšo. Ntle le ho se bonese, maqhubu a terahertz a na le matla a tlase haholo ho feta mefuta e meng e mengata ea maqhubu (joalo ka x-ray) e sebelisoang hajoale ho fana ka leseli mabapi le sebopeho sa thepa - ebang ke lesapo kapa pente ea oli. Sesebelisoa se kopaneng, se sa senyeheng joalo ka chip ea lithium niobate se ka fana ka mokhoa o mong o sa senyeheng ho feta mekhoa ea hajoale ea spectrographic.

O ile a re: "U ka inahanela hore u romela mahlaseli a terahertz ka thepa eo u e thahasellang 'me u e hlahlobisisa ho lekanya karabelo ea thepa, ho itšetlehile ka sebōpeho sa eona sa molek'hule.

Ka mor'a moo, Benea-Chelmus e rera ho tsepamisa maikutlo ho fetoleng thepa ea li-waveguides le li-antenna tsa boenjiniere ho li-waveforms tse nang le amplitudes tse kholo, le maqhubu a hlophisitsoeng hantle le litekanyetso tsa ho bola. O boetse o bona monyetla oa hore theknoloji ea terahertz e ntlafalitsoeng lab ea hae e ka ba molemo bakeng sa lits'ebetso tsa quantum.

"Ho na le lipotso tse ngata tsa bohlokoa tseo re lokelang ho li araba; mohlala, re thahasella ho tseba hore na re ka sebelisa li-chips tse joalo ho hlahisa mefuta e mecha ea mahlaseli a mangata a ka sebelisoang ka linako tse khutšoanyane haholo.


Nako ea poso: Feb-14-2023

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