Ma'anar da aka saba amfani da ita na ingancin katako ya haɗa da radius tabo mai nisa, bambancin filin nesa angle, diffraction iyaka mahara U, Strehl rabo, factor M2 , iko akan manufa surface ko madauki makamashi rabo, da dai sauransu.
Beam ingancin shine muhimmin ma'auni na Laser. Kalmomin gama gari guda biyu na ingancin katako suneBPP kuma M2 wanda an samo su bisa ra'ayi na zahiri guda ɗaya kuma ana iya canzawa daga juna. Ingancin katako na Laser yana da mahimmanci saboda yana da mahimmancin adadin jiki don yin hukunci ko laser yana da kyau ko a'a kuma ko da Ana iya aiwatar da daidaitaccen aiki. Domin da yawa iri iri guda-yanayin fitarwa lasers, high quality-lasers yawanci suna sosai high quality katako, m zuwa sosai kanananM2, kamar 1.05 ko 1.1. Bugu da ƙari, Laser na iya kula da ingancin katako mai kyau a duk tsawon rayuwar sabis, kumaM2 darajar ba ta canzawa. Domin Laser machining machining, high qualitykatako ya fi dacewa don siffata, don aiwatar da aikin injin Laser mai lebur ba tare da ɓata substrate ba kuma ba tare da tasirin thermal ba. A aikace,M2 yawanci ana amfani dashi don m da gas Laser, yayin da BPP galibi ana amfani dashi don Laser fiber lokacin yin lakabi ƙayyadaddun lasers.
Ingancin katako na Laser yawanci ana bayyana shi ta sigogi biyu: BPP kuma M². M²ana yawan rubutawa kamar M2. Hoto mai zuwa yana nuna tsayayyen rarraba katako na Gaussian, indaW shine radius din kugu kuma θ shine rabin bambancin filin nesa akwana.
Canje-canje a cikin BPP M2
BPP (Samfurin Parameter) an bayyana shi azaman radius kugu W ninka ta Rabin bambancin filin nesa akwana θ:
BPP = W × θ
The Rabin bambancin filin nesa akwana θ Gaussian beam shine:
θ0 = λ / πW0
M2 shine rabon samfurin sigar katako zuwa samfurin siga na katako na ainihin yanayin Gaussian katako:
M2 =(W×θ)/(W0×θ0)= BPP /(λ / π)
Ba shi da wahala a samu daga dabarar da ke sama cewa BPP mai zaman kansa ne daga tsawon zango, yayin da M² Hakanan ba shi da alaƙa da tsayin igiyoyin laser. Suna da alaƙa da alaƙa da ƙirar rami da daidaiton haɗuwa na Laser.
Darajar M² yana kusa da 1 mara iyaka, yana nuna rabo tsakanin ainihin bayanai da ingantaccen bayanai. Lokacin da ainihin bayanan ya fi kusa da ingantaccen bayanai, ingancin katako ya fi kyau, wato, lokacinM² ya fi kusa da 1, madaidaicin kusurwar bambance-bambancen ya fi karami, kuma ingancin katako ya fi kyau.
Aunawa da BPP M2
Ana iya amfani da na'urar tantance ingancin katako don auna ingancin katako. Hakanan ana iya auna ingancin katako ta amfani da na'urar tantance haske tare da hadadden aiki. Ana tattara bayanai daga wurare daban-daban na sashin giciye na Laser sannan kuma ana haɗa su ta hanyar ginawa don samarwaM2. M2 ba za a iya aunawa idan akwai kuskure ko kuskuren aunawa a cikin aikin samfur. Don ma'aunin wutar lantarki mai girma, ana buƙatar tsarin ƙima na sophisticated don kiyaye ikon Laser a cikin kewayon da za a iya aunawa kuma a guje wa duk wani lahani na saman gano kayan aiki.
Za'a iya ƙididdige ainihin tushen fiber na gani da buɗaɗɗen lamba bisa ga adadi na sama. Don Laser fiber, radius na kugu ω0= fiber core diamita /2 = R, θ = zunubiα =α= NA (naumeral aperture na fiber).
Rahoton da aka ƙayyade na BPP, M2, kuma Beam Qhali
Ƙananan BPP, mafi kyau Laser katako ingancin.
Za 1.08µm fiber Laser, M2 = 1, BPP = λ / π = 0.344 mm Mrad
Na 10.6µm CO2 Laser, yanayin asali guda ɗaya M2 = 1, BPP = 3.38 mm Mrad
Tsammanin cewa kusurwoyin bambance-bambancen guda biyu ne na asali yanayin Laser (ko Multi-mode Laser da iri daya M2) iri ɗaya ne bayan mayar da hankali, diamita mai mahimmanci na CO2 Laser ya ninka na fiber Laser sau 10.
Mafi kusa M2 shine zuwa 1, mafi kyawun ingancin katako na laser shine.
Lokacin da katako na Laser ke ciki Gaussian rarraba ko kusa da Gaussian rarraba, da kusa da M2 shine zuwa 1, mafi kusancin ainihin laser shine mafi kyawun Laser Gaussian, mafi kyawun ingancin katako shine.
Lokacin aikawa: Satumba-02-2021