Tsoffin mitar gani bakan bakan ne da ke tattare da jerin abubuwan mitar mitoci a ko'ina a kan bakan, wanda za'a iya samar da shi ta hanyar leza masu kulle-kulle, resonators, koelectro-optical modulators. Tambayoyin mitar gani da aka samar taelectrooptic modulatorssuna da halayen mitar maimaituwa, haɗawar ciki da ƙarfi mai ƙarfi, da sauransu, waɗanda ake amfani da su sosai wajen daidaita kayan aiki, spectroscopy, ko ilimin lissafi na asali, kuma sun ja hankalin masu bincike da yawa a cikin 'yan shekarun nan.
Kwanan nan, Alexandre Parriaux da wasu daga Jami'ar Burgendi ta Faransa sun buga takardar bita a cikin mujallar Ci gaba a cikin Optics da Photonics, a tsare-tsaren gabatar da sabon ci gaban bincike da aikace-aikacen tambarin mitar gani da aka samar ta hanyar.electro-Optical modulation: Ya haɗa da gabatarwar combin mita na gani, hanya da halaye na combi mitar gani da aka samar ta hanyarelectrooptic modulator, kuma a ƙarshe yana ƙididdige yanayin aikace-aikacenelectrooptic modulatordaki-daki daki-daki, gami da aikace-aikacen daidaitaccen bakan, tsoma baki biyu na gani na gani, daidaita kayan aiki da tsarar igiyar igiyar ruwa na sabani, da kuma tattauna ƙa'idar bayan aikace-aikace daban-daban. A ƙarshe, marubucin ya ba da bege na fasahar mitar mitar gani na lantarki.
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Shekaru 60 da suka gabata a wannan watan Dr. Shekaru hudu bayan haka, Hargrove, Fock da Pollack na Bell Laboratories a Amurka sun kasance na farko da suka bayar da rahoto game da kulle yanayin aiki da aka samu a cikin laser helium-neon, yanayin bakan Laser na kulle-kulle a cikin lokacin yanki yana wakilta azaman fitar da bugun jini, A cikin mitar yanki akwai jerin gajerun layuka masu hankali da daidaitawa, kamanceceniya da yadda muke amfani da combs na yau da kullun, don haka muke kiran wannan bakan "tsarin mitar gani". Ana magana da shi a matsayin "tsarin mitar gani".
Saboda kyakkyawar aikace-aikacen da ake sa ran na tsefe na gani, an ba da lambar yabo ta Nobel a Physics a 2005 ga Hansch da Hall, waɗanda suka yi aikin majagaba a kan fasahar tsefe na gani, tun daga nan, haɓakar tsefe na gani ya kai wani sabon mataki. Saboda aikace-aikacen daban-daban suna da buƙatu daban-daban don combs na gani, kamar wutar lantarki, tazarar layi da tsayin tsaka-tsaki, wannan ya haifar da buƙatar amfani da hanyoyin gwaji daban-daban don samar da combs na gani, kamar na'urorin kulle-kulle, micro-resonators da electro-optical. mai daidaitawa.
FIG. 1 Bakan yanki na lokaci da mitar yankin bakan guntun mitar gani
Tushen hoto: Gambar mitar lantarki
Tun lokacin da aka gano combs na mitar gani, an samar da mafi yawan combs na gani ta hanyar amfani da na'urorin kulle-kulle. A cikin na'urori masu kulle-kulle, ana amfani da rami tare da lokacin tafiya na τ don gyara dangantakar lokaci tsakanin hanyoyin madaidaiciya, don ƙayyade yawan maimaitawar laser, wanda gabaɗaya zai iya kasancewa daga megahertz (MHz) zuwa gigahertz ( GHz).
Tsunin mitar gani da micro-resonator ke samarwa ya dogara ne akan tasirin da ba a iya gani ba, kuma lokacin zagaye-tafiye yana ƙaddara ta tsawon ƙaramin rami, saboda tsayin ƙaramin rami gabaɗaya ƙasa da 1mm, mitar gani. tsefe da ƙananan rami ke samarwa gabaɗaya gigahertz 10 zuwa 1 terahertz. Akwai nau'ikan microcavities na kowa guda uku, microtubules, microspheres da microrings. Yin amfani da tasirin da ba na kan layi ba a cikin filaye na gani, irin su watsawar Brillouin ko haɗaɗɗen raƙuman ruwa huɗu, haɗe da microcavities, ana iya samar da combs na mitar gani a cikin kewayon nanometers. Bugu da kari, ana iya samar da combs na mitar gani ta amfani da wasu na'urori masu sarrafa sauti na acousto-optic.
Lokacin aikawa: Dec-18-2023