Daidaiton ma'aunin tsayin raƙuman yana cikin tsari na kilohertz

Kwanan nan da aka koya daga jami'ar kimiyya da fasaha ta kasar Sin, jami'ar Guo Guangcan ta tawagar malaman jami'ar Farfesa Dong Chunhua da mai ba da shawara Zou Changling sun ba da shawarar tsarin kula da ƙananan ramuka na duniya, don cimma nasarar sarrafa kai tsaye na cibiyar sadarwa ta mitar gani. mitar mita da maimaitawa, kuma ana amfani da madaidaicin ma'aunin ma'aunin gani, daidaiton ma'aunin tsayin tsayin ya karu zuwa kilohertz (kHz).An buga sakamakon binciken a Nature Communications.
Soliton microcombs dangane da ƙananan ƙananan ƙwayoyin cuta sun jawo sha'awar bincike mai girma a cikin fagagen madaidaicin spectroscopy da agogon gani.Duk da haka, saboda tasirin muhalli da hayaniyar Laser da ƙarin abubuwan da ba su dace ba a cikin microcavity, kwanciyar hankali na soliton microcomb yana da iyaka sosai, wanda ya zama babban cikas a cikin aikace-aikacen aikace-aikacen ƙananan matakan haske.A cikin aikin da ya gabata, masanan kimiyya sun tabbatar da daidaitawa da sarrafa tsefewar mitar gani ta hanyar sarrafa ma'anar refractive na kayan ko geometry na microcavity don cimma ra'ayi na ainihi, wanda ya haifar da canje-canje kusa-kusa a cikin duk yanayin resonance a cikin microcavity a lokaci guda. lokaci, rashin ikon sarrafa mita da maimaita tsefe.Wannan yana iyakance aikace-aikacen tsefe mai ƙarancin haske a cikin fa'idodi masu amfani na madaidaicin spectroscopy, photon microwave, jeri na gani, da sauransu.

Don magance wannan matsala, ƙungiyar bincike ta ba da shawarar sabon tsarin jiki don gane ƙa'idar lokaci mai zaman kanta na mitar cibiyar da maimaita mitar tsefe na gani.Ta hanyar gabatar da biyu daban-daban micro-ragon watsawa kula da hanyoyin, da tawagar iya da kansa sarrafa watsawa na daban-daban umarni na micro-rago, don cimma cikakken iko daban-daban hakori mitoci na Tantancewar mita tsefe.Wannan tsarin tsarin tarwatsawa na duniya ne ga haɗe-haɗen dandamali na photonic daban-daban kamar silicon nitride da lithium niobate, waɗanda aka yi nazari sosai.

Ƙungiyar binciken ta yi amfani da Laser mai yin famfo da Laser mai taimako don sarrafa yanayin sararin samaniya na umarni daban-daban na microcavity don gane daidaiton kwanciyar hankali na mitar yanayin yin famfo da ƙa'ida mai zaman kanta na mitar tsefe mita.Dangane da tsefe na gani, ƙungiyar binciken sun nuna sauri, ƙa'idodi na tsari na mitoci na tsefe na sabani kuma sun yi amfani da shi zuwa ma'aunin daidaitaccen tsayin igiyar ruwa, yana nuna ma'aunin igiyar ruwa tare da daidaiton ma'auni na tsari na kilohertz da ikon auna tsayin raƙuman ruwa da yawa a lokaci guda.Idan aka kwatanta da sakamakon binciken da ya gabata, daidaiton ma'aunin da ƙungiyar bincike ta samu ya kai umarni uku na haɓaka girma.

Soliton microcombs da za a sake daidaitawa da aka nuna a cikin wannan sakamakon binciken sun kafa tushe don tabbatar da ƙarancin farashi, guntu hadedde ma'aunin mitar gani, waɗanda za a yi amfani da su cikin ma'auni daidai, agogon gani, spectroscopy da sadarwa.