Okusanda kufundwa eNyuvesi Yesayensi Nobuchwepheshe YaseChina, ithimba lezemfundo leNyuvesi yaseGuo Guangcan uSolwazi Dong Chunhua kanye nomhlanganyeli uZou Changling bahlongoze indlela yokulawula ukuhlakazwa kwe-micro-cavity, ukuze kuzuzwe ukulawula okuzimele kwesikhathi sangempela kwesikhungo se-optical frequency comb. imvamisa nemvamisa yokuphindaphinda, futhi isetshenziswe esilinganisweni esinembayo se-wavelength yokubona, ukunemba kokulinganisa kwe-wavelength kukhuphukele ku-kilohertz (kHz).Okutholakele kushicilelwe ku-Nature Communications.
Ama-microcombs e-Soliton asekelwe kuma-optical microcavities ahehe isithakazelo esikhulu socwaningo emikhakheni ye-spectroscopy enembile namawashi okubona.Kodwa-ke, ngenxa yethonya lomsindo wemvelo kanye ne-laser kanye nemiphumela eyengeziwe engaqondile ku-microcavity, ukuzinza kwe-soliton microcomb kunqunyelwe kakhulu, okuba isithiyo esikhulu ekusetshenzisweni okusebenzayo kwekamu lezinga eliphansi lokukhanya.Emsebenzini owedlule, ososayensi bazinzile futhi balawula ikamu lemvamisa yokubona ngokulawula inkomba ye-refractive yezinto ezibonakalayo noma i-geometry ye-microcavity ukuze kuzuzwe impendulo yesikhathi sangempela, okubangele izinguquko ezicishe zifane kuzo zonke izindlela ze-resonance ku-microcavity ngesikhathi esifanayo. isikhathi, entula ikhono lokuzimela ngokuzimela imvamisa nokuphindaphinda kwekama.Lokhu kukhawulela kakhulu ukusetshenziswa kwekama elinokukhanya okuphansi kuzigcawu ezingokoqobo ze-spectroscopy enembile, ama-microwave photon, i-optical range, njll.
Ukuze kuxazululwe le nkinga, ithimba locwaningo lihlongoze indlela entsha yomzimba yokuqaphela ukulawulwa kwesikhathi sangempela okuzimele kwemvamisa yesikhungo kanye nemvamisa yokuphindaphinda yekama lefrikhwensi yokubona.Ngokwethula izindlela ezimbili ezihlukene zokulawula ukuhlakazeka kwe-micro-cavity, ithimba lingakwazi ukulawula ngokuzimela ukuhlakazwa kwama-oda ahlukene we-micro-cavity, ukuze kuzuzwe ukulawula okugcwele kwamafrikhwensi ahlukene wamazinyo we-optical frequency comb.Le nqubo yokulawula ukuhlakazeka itholakala emhlabeni wonke kumapulatifomu e-photonic ahlanganisiwe anjenge-silicon nitride ne-lithium niobate, ezifundwe kabanzi.
Ithimba locwaningo lasebenzisa i-laser yokupompa kanye ne-laser eyisizayo ukuze lilawule ngokuzimela izindlela zendawo zama-oda ahlukene we-microcavity ukuze libone ukuzinza okuguquguqukayo kwemvamisa yemodi yokumpompa kanye nokulawulwa okuzimele kwe-frequency comb repetition frequency.Ngokusekelwe kukama lokubonwayo, ithimba locwaningo libonise ukulawulwa okusheshayo, okuhlelekayo kwamafrikhwensi ekama okungahleliwe futhi lalisebenzisa esilinganisweni esinembayo sobude begagasi, libonisa i-wavemeter enesilinganiso sokunemba se-oda le-kilohertz kanye nekhono lokulinganisa ubude bamaza amaza amaningi ngesikhathi esisodwa.Uma kuqhathaniswa nemiphumela yocwaningo yangaphambilini, ukunemba kokulinganisa okutholwe ithimba locwaningo kufinyelele imiyalo emithathu yokuthuthukiswa kobukhulu.
Ama-microcombs e-soliton angalungiseka kabusha aboniswe kulo mphumela wocwaningo abeka isisekelo sokufezeka kwamazinga abiza kancane, ama-chip adidiyelwe we-optical frequency, azosetshenziswa ekulinganisweni okunembayo, iwashi elibonakalayo, i-spectroscopy kanye nokuxhumana.
Isikhathi sokuthumela: Sep-26-2023