Zvichangobva kudzidzwa kubva kuYunivhesiti yeSainzi neTekinoroji yeChina, timu yeyunivhesiti yeGuo Guangcan, Purofesa Dong Chunhua, pamwe chete naZou Changling, vakapa zano rekuti nzira yekudzora kupararira kwema "micro-cavity dispersion" ishande sei, kuti vagone kudzora frequency ye optical frequency comb center frequency uye frequency yekudzokorora, uye vakashandisa pakuyera kwakarurama kwe "optical wavelength", kururamisa kwekuyera kwe "wavelength" kwakawedzera kusvika ku kilohertz (kHz). Zvakawanikwa zvakaburitswa muNature Communications.
Ma microcombs eSoliton akavakirwa pama microcavities e optical akwezva kufarira kukuru kwekutsvaga muminda ye precision spectroscopy uye optical clocks. Zvisinei, nekuda kwepesvedzero yeruzha rwezvakatipoteredza uye laser uye zvimwe zvisingaenderane nemhedzisiro mu microcavity, kugadzikana kwe soliton microcomb kwakaganhurirwa zvikuru, izvo zvinova chipingamupinyi chikuru mukushandiswa kwe low light level comb. Mubasa rekare, masayendisiti akagadzirisa uye akadzora optical frequency comb nekudzora refractive index yezvinhu kana geometry ye microcavity kuti vawane real-time feedback, izvo zvakakonzera shanduko dzakafanana mune ese resonance modes mu microcavity panguva imwe chete, kushaya kugona kudzora frequency uye kudzokorora kwe comb yakazvimirira. Izvi zvinoderedza zvakanyanya kushandiswa kwe low-light comb munzvimbo dzinoshanda dze precision spectroscopy, microwave photons, optical ranging, nezvimwewo.
Kuti vagadzirise dambudziko iri, timu yekutsvagisa yakaronga nzira itsva yekuona kuti frequency yepakati inodzorwa sei uye frequency yekudzokorora kwe optical frequency comb inodzorwa sei. Nekuunza nzira mbiri dzakasiyana dzekudzora kupararira kwe micro-cavity, timu inogona kudzora yega kupararira kwe micro-cavity, kuitira kuti iwane kutonga kwakazara kwe frequency yemazino akasiyana e optical frequency comb. Iyi nzira yekutonga kupararira inoshandiswa kune akasiyana mapuratifomu e photonic akabatanidzwa akadai se silicon nitride ne lithium niobate, ayo akadzidzwa zvakanyanya.
Chikwata chekutsvagisa chakashandisa pombi yelaser neassistant laser kudzora yakazvimirira nzira dzenzvimbo dzakasiyana dze microcavity kuti ione kugadzikana kwe adaptive kwe pumping mode frequency uye kudzorwa kwakazvimirira kwe frequency repetition frequency ye frequency comb. Zvichibva pa optical comb, chikwata chekutsvagisa chakaratidza kukurumidza, kurongeka kwe comb frequency uye chakaishandisa pakuyera kwakarurama kwe wave length, zvichiratidza wavemeter ine kuyera kwakarurama kwe kilohertz uye kugona kuyera ma wavelengths akawanda panguva imwe chete. Zvichienzaniswa nemhedzisiro yekutsvagisa yapfuura, kuyera kwakarurama kwakawanikwa nechikwata chekutsvagisa kwasvika matatu ma orders ekuvandudza hukuru.
Ma microcombs e soliton anogona kugadziriswazve akaratidzwa mumhedzisiro yekutsvagisa uku akagadzira hwaro hwekuzadzikiswa kwemazinga e optical frequency akasanganiswa nemachip asingadhuri, ayo achashandiswa mukuyera kwakaringana, wachi ye optical, spectroscopy uye kutaurirana.
Nguva yekutumira: Gunyana-26-2023