abashakashatsi bakoze chip yoroheje cyane hamwe numuzunguruko wa fotonike ushobora gukoreshwa mugukoresha icyitwa terahertz icyuho - kiri hagati ya 0.3-30THz mumashanyarazi ya electronique - kuri spekitroscopi no gufata amashusho.
Iki cyuho kuri ubu ni ikintu cyahantu hapfuye hifashishijwe ikoranabuhanga, risobanura inshuro zihuta cyane kubikoresho bya elegitoroniki nu bikoresho byitumanaho, ariko bitinda cyane kuri optique no gukoresha amashusho.
Nyamara, chip nshya yabahanga ubu ibafasha kubyara umuraba wa terahertz ufite inshuro zingana, uburebure bwumuraba, amplitude hamwe nicyiciro. Igenzura risobanutse neza rishobora gutuma imirasire ya terahertz ikoreshwa mubisekuruza bizaza murwego rwa elegitoroniki na optique.
Ibikorwa byakozwe hagati ya EPFL, ETH Zurich na kaminuza ya Harvard, byasohotse muriItumanaho rya Kamere.
Cristina Benea-Chelmus wayoboye ubushakashatsi muri Laboratoire ya Hybrid Photonics (HYLAB) mu Ishuri ry’Ubwubatsi rya EPFL, yasobanuye ko mu gihe imiraba ya terahertz yakorewe muri laboratoire mbere, inzira zabanje zashingiraga cyane cyane kuri kristu nyinshi kugira ngo zitange umurongo ukwiye. Ahubwo, laboratoire yakoresheje imiyoboro ya fotonike, ikozwe muri lithium niobate kandi ikozwe neza ku gipimo cya nanometero hamwe nabafatanyabikorwa muri kaminuza ya Harvard, bituma habaho uburyo bunoze. Gukoresha insimburangingo ya silicon nayo ituma igikoresho gikwiranye na sisitemu ya elegitoroniki na optique.
Yabisobanuye agira ati: "Kubyara imiraba kuri radiyo nini cyane biragoye cyane, kandi hari tekinike nkeya zishobora kubyara imiterere yihariye." Ati: "Ubu turashoboye gukora imiterere nyayo y'agateganyo y'umuraba wa terahertz - kuvuga cyane cyane, 'ndashaka imiterere isa n'iyi.'”
Kugira ngo ibyo bigerweho, laboratoire ya Benea-Chelmus yateguye chip itunganya imiyoboro, yitwa waveguides, ku buryo antene ya microscopique yashoboraga gukoreshwa mu gukwirakwiza imiraba ya terahertz ituruka ku mucyo uturuka kuri fibre optique.
Benea-Chelmus yashimangiye ati: "Kuba igikoresho cyacu kimaze gukoresha ibimenyetso bisanzwe bya optique ni akarusho, kuko bivuze ko izo chip nshya zishobora gukoreshwa na lazeri gakondo, zikora neza kandi zikaba zumvikana neza. Bisobanura ko igikoresho cyacu gihuza itumanaho." Yongeyeho ko ibikoresho bito byohereza no kwakira ibimenyetso mu ntera ya terahertz bishobora kugira uruhare runini muri sisitemu igendanwa ya gatandatu (6G).
Mwisi yisi ya optique, Benea-Chelmus ibona ubushobozi bwihariye bwa chipi ya lithium niobate mini muri spekitroscopi no kwerekana. Usibye kuba atari ionizing, umuraba wa terahertz ni imbaraga nke cyane ugereranije nubundi bwoko bwinshi bwumuraba (nka x-imirasire) kuri ubu bikoreshwa mugutanga amakuru kubyerekeranye nibintu - byaba igufwa cyangwa irangi ryamavuta. Igikoresho cyoroshye, kidasenya nka chip ya lithium niobate rero irashobora gutanga ubundi buryo butagaragara bwibikoresho bya tekinoroji ya none.
Ati: "Urashobora kwiyumvisha kohereza imirasire ya terahertz ukoresheje ibikoresho ushishikajwe no kuyisesengura kugirango umenye uko ibintu byakiriwe, ukurikije imiterere ya molekile. Ibi byose biva ku gikoresho gitoya kuruta umutwe uhuye".
Ibikurikira, Benea-Chelmus irateganya kwibanda ku guhindura imitunganyirize ya chip ya flake na antene kuri injeniyeri ya injeniyeri hamwe na amplitude nini, hamwe ninshuro nyinshi zahujwe neza nigipimo cyo kubora. Abona kandi ubushobozi bwa tekinoroji ya terahertz yatejwe imbere muri laboratoire kugirango ibe ingirakamaro kuri kwant.
Yashoje agira ati: "Hariho ibibazo byinshi by'ibanze tugomba gukemura; nk'urugero, dushishikajwe no kumenya niba dushobora gukoresha izo chip kugira ngo tubyare ubwoko bushya bw'imirasire ya kwant ishobora gukoreshwa mu gihe gito cyane. Imiraba nk'iyi mu bumenyi bwa kwant irashobora gukoreshwa mu kugenzura ibintu bya kwant."
Igihe cyo kohereza: Gashyantare-14-2023
