Tsarin hanyar gani na zare mai jurewaLaser mai faɗi mai faɗi
1. Bayani
Laser mai faɗin layi mai faɗi 1018 nm. Tsawon tsawon aiki shine 1018 nm, ƙarfin fitarwa na laser shine 104 W, faɗin spectral na 3 dB da 20 dB sune ~21 GHz da ~72 GHz bi da bi, rabon ƙarewar polarization shine >17.5 dB, kuma ingancin hasken yana da girma (2 x M – 1.62 da 2 y M) Atsarin lasertare da ingantaccen gangara na kashi 79% (∼1.63).
2. Bayanin hanyar gani
A cikinZaren da aka haɗa da kunkuntar-layi laser, na'urar laser mai layi mai rabawa ta fiber mai rabawa ta ƙunshi nau'i biyu na zare masu riƙe polarization da kuma zare mai riƙe polarization mai tsawon mita 1.5 mai tsawon mita 10/125 μm ytterbium mai ɗaukar nauyin polarization mai ɗaukar nauyin mita biyu a matsayin matsakaicin riba. Matsakaicin sha na wannan zaren gani a 976 nm shine 5 dB/m. Ana tura mai haɗa laser ɗin ta hanyar toshewar tsawon rai na 976 nm.Laser na semiconductortare da matsakaicin ƙarfin 27 W ta hanyar haɗakar haske mai riƙe da polarity (1+1)×1. Babban grid ɗin haske yana da haske sama da 99%, kuma bandwidth na haske na 3 dB shine kimanin 0.22 nm. Ƙananan haske na grid ɗin shine 40%, kuma bandwidth na haske na 3 dB shine kimanin 0.216 nm. Tsawon haske na tsakiya na grid ɗin biyu suna a 1018 nm. Don daidaita ƙarfin fitarwa na resonator na laser da rabon rage ASE, an inganta ƙarancin haske na grid ɗin zuwa 40%. An haɗa zaren wutsiya na grating mai haske zuwa ga fiber ɗin gain, yayin da zaren wutsiya na grating mai haske ana juya shi a 90° kuma an haɗa shi da zaren wutsiya na matattarar rufi. Don haka, matsayin kololuwar tsawon haske mai sauri na grating mai haske ya yi daidai da na tsawon haske mai jinkiri na grating mai ƙarancin haske. Ta wannan hanyar, laser ɗaya kawai mai polarized zai iya yin juyawa a cikin ramin resonant. Sauran hasken famfo a cikin rufin fiber na gani ana tace shi ta hanyar matatar rufi da aka yi da kansa wanda aka haɗa cikin ramin resonant, kuma ana rage wutsiyar pigtail ɗin fitarwa da digiri 8 don hana amsawar fuska ta ƙarshe da juyawar ƙwayoyin cuta.
3. Ilimin Baya
Tsarin samar da lasers na zare mai layi-layi: Saboda damuwa, zaren da ke riƙe da polarization mai siffar pear yana da gatari biyu na polarization orthogonal, waɗanda aka sani da axis mai sauri da axis mai jinkirin. Gabaɗaya, tunda ma'aunin refractive na axis mai jinkirin ya fi na axis mai sauri girma, grating da aka rubuta akan zaren mai riƙe polarization yana da tsayin tsakiya daban-daban guda biyu. Ramin resonant na laser fiber mai layi-layi yawanci yana ƙunshe da gratings guda biyu masu riƙe polarization. Tsawon tsayi na grating mai ƙarancin haske da babban grating mai haske akan axis mai sauri da axis mai jinkirin sun dace bi da bi. Lokacin da girman haske na grating mai riƙe polarization ya yi kunkuntar isa, za a iya raba siginar watsawa a cikin axis mai sauri da kuma hanyoyin axis mai jinkirin, kuma duka tsayin tsayi na iya yin rawar jiki a cikin ramin resonant. Dangane da ƙa'idar oscillation mai tsayi-layi na grating mai riƙe polarization, a cikin gwajin, ana iya amfani da hanyar walda mai layi-layi don cimma hakan. A lokacin walda, ana daidaita gatari masu kula da polarization na gratings guda biyu. Ta wannan hanyar, kololuwar watsawa guda biyu na grating mai girman gaske sun yi daidai da na grating mai ƙarancin haske, don haka ana iya samun fitowar laser mai tsawon zango biyu.
A cikin tsarin kula da polarization na laser, skew na layi muhimmin ma'auni ne don kimanta halayen fitarwa na lasers masu polarized a layi. Gabaɗaya, lokacin grating mai high-reflectance ya fi na grating mai high-reflectance girma. Don cimma laser mai high-reflectance girma tare da babban ƙimar PER, ƙololuwar polarization guda ɗaya kawai yana buƙatar girgiza. Lokacin da axis mai sauri na grating mai high-reflectance girma yana kan axis mai jinkirin na grating mai high-reflectance girma, Raƙuman tsakiya a cikin saurin axis alkibla na ƙaramin-reflecting girma yayi daidai da wanda ke cikin jinkirin axis alkibla na babban-reflecting girma, yayin da kololuwar watsawa a cikin jinkirin axis alkibla na ƙaramin-reflecting girma bai yi daidai da kololuwar watsawa a cikin saurin axis alkibla na babban-reflecting girma ba. Ta wannan hanyar, ana iya girgiza kololuwar watsawa ɗaya. Hakazalika, idan axis mai jinkirin grating mai ƙarancin haske yana kan axis mai sauri na grating mai ƙarfin haske, tsayin tsakiyar axis mai jinkirin grating mai ƙarancin haske ya yi daidai da na axis mai sauri na grating mai ƙarfin haske, yayin da kololuwar watsawa na axis mai sauri na grating mai ƙarancin haske bai yi daidai da na axis mai jinkirin grating mai ƙarfin haske ba. Ta wannan hanyar, ana iya girgiza kololuwar watsawa ɗaya. Duk hanyoyin biyu da ke sama za su iya cimma fitowar laser mai ƙarfin haske. Dangane da ƙa'idar oscillation na laser mai ƙarfin haske guda ɗaya na grating mai riƙe polarization, a cikin gwajin, ana iya amfani da hanyar haɗa orthogonal don cimma hakan. Lokacin da kusurwar haɗin gatari mai riƙe da polarization na babban grating mai nuna haske da ƙaramin grating mai nuna haske ya kai digiri 90, kololuwar watsawa a cikin jagorancin axis mai jinkirin na babban grating mai nuna haske ya yi daidai da kololuwar watsawa a cikin jagorancin axis mai sauri na ƙaramin grating mai nuna haske, don haka ana iya samun fitowar laser ɗin zare mai launin shuɗi mai layi ɗaya.
Lokacin Saƙo: Satumba-12-2025