Kutshanje kufundwe kwiYunivesithi yeSayensi neTekhnoloji yaseTshayina, iqela lezemfundo leyunivesithi yaseGuo Guangcan uNjingalwazi uDong Chunhua kunye nomlingani uZou Changling bacebise indlela yolawulo lokusasazwa kwe-micro-cavity jikelele, ukuze kufezekiswe ulawulo oluzimeleyo lwexesha langempela lwe-optical frequency comb center frequency kunye ne-repetition frequency, kwaye isetyenziswe ekulinganisweni ngokuchanekileyo kwe-optical wavelength, ukuchaneka kokulinganisa i-wavelength kwanda ukuya kwi-kilohertz (kHz). Iziphumo zipapashwe kwi-Nature Communications.
Ii-microcombs zeSoliton ezisekelwe kwii-microcavities ze-optical zitsale umdla omkhulu wophando kwicandelo le-precision spectroscopy kunye ne-optical clock. Nangona kunjalo, ngenxa yempembelelo yengxolo yokusingqongileyo kunye ne-laser kunye nemiphumo eyongezelelweyo engeyiyo emgceni kwi-microcavity, ukuzinza kwe-soliton microcomb kunqongophele kakhulu, nto leyo eba ngumqobo omkhulu ekusetyenzisweni kwe-low light level comb. Kumsebenzi wangaphambili, izazinzulu zazinzisa kwaye zalawula i-optical frequency comb ngokulawula i-refractive index yezinto okanye i-geometry ye-microcavity ukuze kufezekiswe impendulo yexesha langempela, nto leyo ebangele utshintsho olufana kuzo zonke iindlela ze-resonance kwi-microcavity ngaxeshanye, zingenawo amandla okulawula ngokuzimeleyo i-frequency kunye nokuphindaphinda kwe-comb. Oku kunciphisa kakhulu ukusetyenziswa kwe-low-light comb kwiindawo ezisebenzayo ze-precision spectroscopy, ii-microwave photons, i-optical ranging, njl.
Ukusombulula le ngxaki, iqela lophando licebise indlela entsha ebonakalayo yokufezekisa ulawulo oluzimeleyo lwexesha langempela lwe-center frequency kunye nokuphindaphinda kwe-optical frequency comb. Ngokuzisa iindlela ezimbini ezahlukeneyo zokulawula i-micro-cavity dispersion, iqela linokulawula ngokuzimeleyo i-dispersion ye-odolo ezahlukeneyo ze-micro-cavity, ukuze kufezekiswe ulawulo olupheleleyo lwe-frequency ezahlukeneyo zamazinyo ze-optical frequency comb. Le ndlela yokulawula i-dispersion isetyenziswa ngokubanzi kumaqonga ahlukeneyo e-photonic adibeneyo afana ne-silicon nitride kunye ne-lithium niobate, afundwe ngokubanzi.
Iqela lophando lisebenzise i-laser yokupompa kunye ne-laser encedisayo ukulawula ngokuzimeleyo iindlela zendawo zemiyalelo eyahlukeneyo ye-microcavity ukuze kufezekiswe uzinzo oluhambelanayo lwe-frequency yemo yokupompa kunye nolawulo oluzimeleyo lwe-frequency ye-frequency comb repetition frequency. Ngokusekelwe kwi-optical comb, iqela lophando libonise ulawulo olukhawulezayo nolucwangcisiweyo lwee-frequency ze-comb ezingacwangciswanga kwaye layisebenzisa ekulinganisweni ngokuchanekileyo kobude bamaza, libonisa i-wavemeter enokuchaneka kokulinganisa komyalelo we-kilohertz kunye nokukwazi ukulinganisa ubude bamaza amaninzi ngaxeshanye. Xa kuthelekiswa neziphumo zophando zangaphambili, ukuchaneka kokulinganisa okufunyenwe liqela lophando kufikelele kwii-oda ezintathu zokuphucula ubukhulu.
Ii-microcombs ze-soliton ezinokuhlengahlengiswa kwakhona eziboniswe kolu phando zibeka isiseko sokuphunyezwa kwemigangatho ye-optical frequency edibeneyo nexabiso eliphantsi, eza kusetyenziswa ekulinganiseni ngokuchanekileyo, iwotshi ye-optical, i-spectroscopy kunye nonxibelelwano.
Ixesha lokuthumela: Septemba-26-2023