Imashini ipima filime nto ya lithium niobate (LN)

Imashini ipima filime nto ya lithium niobate (LN)

Lithium niobate (LN) ifite imiterere yihariye ya kristu n'ingaruka nziza ku mubiri, nk'ingaruka zitari umurongo, ingaruka za electro-optic, ingaruka za pyroelectric, n'ingaruka za piezoelectric. Muri icyo gihe, ifite ibyiza byo kugaragara neza kw'idirishya rya optique ryagutse ndetse no kudahungabana igihe kirekire. Ibi biranga LN bituma iba urubuga rw'ingenzi ku gisekuru gishya cya fotoniki zihujwe. Mu bikoresho by'amatara na sisitemu za optoelectronic, imiterere ya LN ishobora gutanga imikorere myiza n'imikorere myiza, igateza imbere iterambere ry'itumanaho ry'amatara, ikoreshwa ry'amatara, n'ibice byo kumenya amatara. Ariko, bitewe n'ubushobozi buke bwo kwinjiza no gukingira bwa lithium niobate, ikoreshwa ry'amatara ya lithium niobate riracyahura n'ikibazo cyo kugorwa no kuyibona. Mu myaka ya vuba aha, raporo muri uru rwego zirimo cyane cyane ibyuma bipima amatara bya waveguide hamwe n'ibyuma bipima amatara bya heterojunction.
Imashini ikoresha ikoranabuhanga rya waveguide ishingiye kuri lithium niobate akenshi yibanda ku itumanaho rya C-band (1525-1565nm). Ku bijyanye n'imikorere, LN ikora cyane cyane nk'imiraba iyobowe, mu gihe imikorere yo kubona optoelectronic ishingiye cyane cyane kuri semiconductors nka silicon, semiconductors za III-V group narrow bandgap, n'ibikoresho bifite imiterere ibiri. Muri ubwo buryo, urumuri rwoherezwa binyuze muri litium niobate optical waveguides hamwe n'igihombo gito, hanyuma rukinjizwa n'ibindi bikoresho bya semiconductor bishingiye ku ngaruka za photoelectric (nk'ingaruka za photoconductivity cyangwa photovoltaic) kugira ngo rwongere ubushobozi bwo gutwara no kubihindura ibimenyetso by'amashanyarazi kugira ngo bisohoke. Ibyiza ni bandwidth yo gukora cyane (~GHz), voltage nke yo gukora, ingano nto, no guhuza na chip ya photonic. Ariko, bitewe no gutandukanya ahantu hagati ya lithium niobate na semiconductor, nubwo buri kimwe gikora imirimo yacyo, LN igira uruhare gusa mu miraba iyobora kandi indi miterere myiza y'amahanga ntiyakoreshejwe neza. Ibikoresho bya semiconductor bigira uruhare gusa mu guhindura photoelectric kandi ntibigirana isano, bigatuma habaho umugozi muto wo gukora. Mu bijyanye no gushyira mu bikorwa byihariye, guhuza urumuri kuva ku isoko y'urumuri kugera kuri litiyumu niobate optique waveguide bitera igihombo gikomeye n'ibisabwa bikomeye mu buryo bwo gukora. Byongeye kandi, imbaraga nyazo z'urumuri zinyura ku muyoboro w'ibikoresho bya semiconductor mu gace k'aho ruhurira biragoye kubigenzura, ibyo bikaba bigabanya imikorere yarwo yo kubitahura.
Umuco gakondogufotoraIkoreshwa mu gukoresha amashusho akenshi rishingira ku bikoresho bya semiconductor. Kubwibyo, kuri lithium niobate, umuvuduko wayo muke wo kwinjiza urumuri n'ubushobozi bwo kwirinda ubushyuhe bituma idakundwa n'abashakashatsi ba photodetector, ndetse ikaba ingorabahizi muri urwo rwego. Ariko, iterambere ry'ikoranabuhanga rya heterojunction mu myaka ya vuba aha ryazanye icyizere ku bushakashatsi bwa litium niobate. Ibindi bikoresho bifite ubushobozi bwo kwinjiza urumuri rwinshi cyangwa ubushobozi bwo gutwara neza bishobora guhuzwa na lithium niobate mu buryo butandukanye kugira ngo byishyure inenge zayo. Muri icyo gihe, imiterere ya litium niobate iterwa na polarizing yihuta bitewe n'imiterere yayo ishobora kugenzurwa ihinduka ubushyuhe munsi y'imirasire y'urumuri, bityo igahindura imiterere ya pyroelectric kugira ngo imenyekane neza. Iyi ngaruka y'ubushyuhe ifite ibyiza byo gukoresha umuyoboro munini no kwitwara, kandi ishobora kuzuzanywa neza no guhuzwa n'ibindi bikoresho. Gukoresha neza ingaruka z'ubushyuhe n'izuba byafunguye igihe gishya kuri litium niobate, bituma ibikoresho bihuza ibyiza by'ingaruka zombi. Kandi kugira ngo hakorwe amakosa kandi hagere ku guhuza inyungu, ni ahantu hakunze gukorwa ubushakashatsi mu myaka ya vuba aha. Byongeye kandi, gukoresha uburyo bwo gushyiramo ion, gushushanya band, no gushushanya defect engineering nabyo ni amahitamo meza yo gukemura ikibazo cyo kubona lithium niobate. Ariko, kubera ko lithium niobate igoye cyane kuyitunganya, ubu buryo buracyafite imbogamizi zikomeye nko kuba nta bushobozi bwo kuyishyiramo, ibikoresho na sisitemu zo gufata amashusho, ndetse n'imikorere idahagije, ifite agaciro gakomeye k'ubushakashatsi n'umwanya.

Ishusho ya 1, hakoreshejwe imiterere y'ingufu z'ubusembwa muri LN bandgap nk'ibigo by'abatanga electron, ibikoresho byo gutwara amashanyarazi byishyurwa bikorerwa mu gice cyo kuyobora urumuri munsi y'urumuri rugaragara. Ugereranyije n'ibikoresho bya LN bya pyroelectric byabanje, ubusanzwe byari bifite umuvuduko wo gusubiza wa hafi 100Hz, ibiImashini ipima foto ya LNifite umuvuduko wihuse wo gusubiza kugeza kuri 10kHz. Hagati aho, muri iki gikorwa, byagaragaye ko LN ifite magnesium ion doped ishobora gutuma urumuri rwo hanze ruhinduka kugeza kuri 10kHz. Iki gikorwa giteza imbere ubushakashatsi ku mikorere myiza noimashini zipima LN zihuta cyanemu kubaka utumashini duto twa LN photonic twifashishijwe mu buryo bwuzuye.
Muri make, urwego rw'ubushakashatsi rwaimashini zipima filime ntoya za lithium niobateifite akamaro kanini mu bya siyansi n'ubushobozi bukomeye bwo kuyikoresha mu buryo bufatika. Mu gihe kizaza, hamwe n'iterambere ry'ikoranabuhanga no kwiyongera k'ubushakashatsi, ibyuma bipima filime ya lithium niobate (LN) bizatera imbere mu guhuza neza. Guhuza uburyo butandukanye bwo guhuza kugira ngo hagerwe ku mikorere myiza, gusubiza vuba, hamwe n'ibyuma bipima filime ya lithium niobate binini mu buryo bwose bizaba impamo, bizateza imbere cyane iterambere ry'ikoranabuhanga ryo guhuza ibyuma n'ikoranabuhanga mu buryo bw'ubwenge, kandi bitange amahirwe menshi ku ikoreshwa rishya rya fotoniki.