Muva nje, ithimba lezemfundo lase-University of Science and Technology of China lithole ulwazi oluvela eNyuvesi Yesayensi Nobuchwepheshe, uSolwazi Dong Chunhua kanye nomlingani wakhe uZou Changling, baphakamise indlela yokulawula ukusabalala kwe-micro-cavity universal, ukuze kufezwe ukulawula okuzimele kwesikhathi sangempela kwemvamisa yesikhungo se-optical frequency comb kanye nemvamisa yokuphindaphinda, futhi kwasetshenziswa ekulinganisweni okunembile kwe-optical wavelength, ukunemba kokulinganisa ubude be-wavelength kwanda kwaba yi-kilohertz (kHz). Okutholakele kushicilelwe ku-Nature Communications.
Ama-microcomb e-Soliton asekelwe kuma-microcavity e-optical adonsele isithakazelo esikhulu socwaningo emikhakheni ye-precision spectroscopy kanye namawashi e-optical. Kodwa-ke, ngenxa yethonya lomsindo wemvelo kanye ne-laser kanye nemiphumela eyengeziwe engeyona eye-linear ku-microcavity, ukuzinza kwe-microcomb ye-soliton kunqunyelwe kakhulu, okuba yisithiyo esikhulu ekusetshenzisweni okusebenzayo kwe-comb yezinga eliphansi lokukhanya. Emsebenzini wangaphambilini, ososayensi bazinzisa futhi balawula i-optical frequency comb ngokulawula i-refractive index yezinto noma i-geometry ye-microcavity ukuze bafeze impendulo yesikhathi sangempela, okwabangela izinguquko ezicishe zifane kuzo zonke izindlela ze-resonance ku-microcavity ngesikhathi esifanayo, bengenalo ikhono lokulawula ngokuzimela imvamisa kanye nokuphindaphinda kwe-comb. Lokhu kunciphisa kakhulu ukusetshenziswa kwe-low-light comb ezigcawini ezingokoqobo ze-precision spectroscopy, ama-microwave photon, i-optical ranging, njll.
Ukuze kuxazululwe le nkinga, ithimba locwaningo liphakamise indlela entsha ebonakalayo yokufeza ukulawulwa okuzimele kwesikhathi sangempela kwemvamisa ephakathi kanye nemvamisa yokuphindaphinda kwekamu lemvamisa ye-optical. Ngokwethula izindlela ezimbili ezahlukene zokulawula ukusabalala kwe-micro-cavity, ithimba lingalawula ngokuzimela ukusabalala kwemiyalelo ehlukene ye-micro-cavity, ukuze kufezwe ukulawula okugcwele kwemvamisa ehlukene yamazinyo yekamu lemvamisa ye-optical. Le ndlela yokulawula ukusabalala ijwayelekile kumapulatifomu ahlukahlukene e-photonic ahlanganisiwe njenge-silicon nitride kanye ne-lithium niobate, afundwe kabanzi.
Ithimba locwaningo lisebenzise i-laser yokupompa kanye ne-laser eyisizayo ukulawula ngokuzimela izindlela zendawo zama-oda ahlukene e-microcavity ukuze kuqashelwe ukuzinza okuguquguqukayo kwemvamisa yemodi yokupompa kanye nokulawulwa okuzimele kwemvamisa yokuphindaphinda kwe-frequency comb. Ngokusekelwe ku-optical comb, ithimba locwaningo libonise ukulawulwa okusheshayo nokuhlelekile kwama-comb frequency okungahleliwe futhi lakusebenzisa ekulinganisweni okunembile kobude bamagagasi, libonisa i-wavemeter enokunemba kokulinganisa kwe-kilohertz kanye nekhono lokulinganisa ama-wavelength amaningi ngesikhathi esisodwa. Uma kuqhathaniswa nemiphumela yocwaningo lwangaphambilini, ukunemba kokulinganisa okufinyelelwe yithimba locwaningo kufinyelele ama-oda amathathu okuthuthukiswa okukhulu.
Ama-microcomb e-soliton aphinde alungiseke aboniswe kulo mphumela wocwaningo abeka isisekelo sokuqashelwa kwezindinganiso zemvamisa ye-optical ezihlanganisiwe ezingabizi kakhulu, ezizosetshenziswa ekulinganisweni okunembile, iwashi le-optical, i-spectroscopy kanye nokuxhumana.
Isikhathi sokuthunyelwe: Septhemba-26-2023