Kulondola kwa kuyeza kwa mafunde kumatengera kilohertz

Posachedwapa anaphunzira ku yunivesite ya Sayansi ndi Technology ya China, yunivesite ya Guo Guangcan academician gulu Pulofesa Dong Chunhua ndi wothandizira Zou Changling anapempha chilengedwe yaying'ono cavity kupezeka kulamulira limagwirira, kukwaniritsa zenizeni nthawi kudzilamulira ulamuliro wa kuwala pafupipafupi zisa pakati. mafupipafupi ndi kubwerezabwereza pafupipafupi, ndikugwiritsidwa ntchito ku kuyeza kolondola kwa mawonekedwe a kuwala kwa mawonekedwe, kulondola kwa kuyeza kwa mafunde kumawonjezeka kufika pa kilohertz (kHz). Zomwe anapezazo zidasindikizidwa mu Nature Communications.
Ma microcombs a Soliton otengera ma optical microcavities akopa chidwi chofufuza pamagulu owoneka bwino komanso mawotchi owoneka bwino. Komabe, chifukwa cha chikoka cha chilengedwe ndi laser phokoso ndi zina zotsatira nonlinear mu microcavity, kukhazikika kwa soliton microcomb ndi zochepa kwambiri, zomwe zimakhala chopinga chachikulu pa ntchito zothandiza otsika mlingo chisa. M'ntchito yapitayi, asayansi adakhazikika ndikuwongolera chisa chafupipafupi cha kuwala poyang'anira refractive index ya zinthu kapena geometry ya microcavity kuti akwaniritse mayankho a nthawi yeniyeni, zomwe zinayambitsa kusintha kwafupipafupi mumayendedwe onse a resonance mu microcavity nthawi yomweyo. nthawi, alibe mphamvu paokha kulamulira pafupipafupi ndi kubwereza zisa. Izi zimachepetsa kwambiri kugwiritsa ntchito chisa chowala pang'ono pazithunzi zowoneka bwino, ma microwave photon, kuwala kowala, ndi zina zambiri.

Kuti athetse vutoli, gulu lofufuza lidakonza njira yatsopano yodziwira nthawi yeniyeni yodziyimira payokha yapakati pafupipafupi komanso kubwereza pafupipafupi kwa chisa chamagetsi. Poyambitsa njira ziwiri zosiyana za micro-cavity zobalalitsidwa, gululo likhoza kulamulira palokha kufalikira kwa machitidwe osiyanasiyana a micro-cavity, kuti akwaniritse kulamulira kosiyanasiyana kwa mafupipafupi a mano optical frequency chisa. Njira yoyendetsera kubalalikayi ndi yapadziko lonse lapansi ku nsanja zosiyanasiyana zophatikizika za Photonic monga silicon nitride ndi lithiamu niobate, zomwe zaphunziridwa kwambiri.

Gulu lofufuzira linagwiritsa ntchito laser yopopa ndi laser wothandizira kuti azilamulira modziyimira pawokha mitundu yamitundu yosiyanasiyana ya ma microcavity kuti azindikire kukhazikika kokhazikika kwa kupopera kwamachitidwe pafupipafupi komanso kuwongolera kodziyimira pawokha kwa ma frequency chisa kubwereza pafupipafupi. Kutengera chisa cha kuwala, gulu lofufuzira lidawonetsa kuwongolera mwachangu, kosinthika kwa ma frequency a chisa mopanda tsankho ndikuyiyika pakuyezetsa kolondola kwa kutalika kwa mafunde, kuwonetsa ma wavemeter ndi kuyeza kolondola kwa dongosolo la kilohertz ndikutha kuyeza mafunde angapo nthawi imodzi. Poyerekeza ndi zotsatira za kafukufuku wam'mbuyomo, kulondola kwa muyeso komwe gulu la kafukufuku linapeza kwafika pazigawo zitatu za kusintha kwakukulu.

Ma microcombs osinthika a soliton omwe awonetsedwa muzotsatira za kafukufukuyu amayala maziko a kukwaniritsidwa kwa miyezo yotsika mtengo, yophatikizika ya ma frequency optical frequency standards, yomwe idzagwiritsidwe ntchito muyeso yolondola, wotchi yamaso, mawonekedwe owonera komanso kulumikizana.