Menene akunkuntar layin layi?
Laser mai kunkuntar layin layi, Kalmar “layin nisa” yana nufin faɗin layi na bakanLasera cikin mitar yanki, wanda yawanci ana ƙididdige shi dangane da cikakken rabin-ƙoƙarta cikakken faɗin bakan (FWHM). An fi shafan layin layi ta hanyar raɗaɗin kai tsaye na atoms ko ions masu zumudi, hayaniyar lokaci, girgizar injin na'urar resonator, jitter zafin jiki da sauran abubuwan waje. Ƙananan darajar layin layi, mafi girma da tsabta na bakan, wato, mafi kyawun monochromaticity na laser. Laser masu irin waɗannan halayen yawanci suna da ɗan ƙaran lokaci ko amo mai ƙarfi da ƙarar ƙarar ƙaranci. A lokaci guda, ƙarami ƙimar faɗin layi na Laser, yana da ƙarfi daidai da daidaituwa, wanda ke bayyana azaman tsayin haɗin kai mai tsayi.
Ganewa da aikace-aikacen Laser kunkuntar layin layi
Iyakance ta ainihin ribar layi na kayan aiki na Laser, yana da kusan ba zai yiwu ba kai tsaye a gane fitar da kunkuntar layin layi ta hanyar dogaro da oscillator na gargajiya da kansa. Don gane da aiki na kunkuntar layin Laser, yawanci ya zama dole a yi amfani da filtata, grating da sauran na'urorin don iyakance ko zabar a tsaye modules a cikin riba bakan, ƙara da net riba bambanci tsakanin a tsaye halaye, ta yadda akwai 'yan ko ma daya kawai a tsaye yanayin oscillation a cikin Laser resonator. A cikin wannan tsari, sau da yawa ya zama dole don sarrafa tasirin amo akan fitarwar laser, da kuma rage girman faɗaɗa layin da ke haifar da girgizawa da canjin yanayin yanayin waje; A lokaci guda kuma, ana iya haɗa shi tare da bincike na lokaci ko mitar amo na yanayi mai yawa don fahimtar tushen amo da haɓaka ƙirar Laser, don cimma daidaiton fitarwa na kunkuntar layin Laser.
Bari mu dubi fahimtar kunkuntar layi na aiki na nau'ikan laser daban-daban.
Semiconductor Laser suna da fa'ida daga m size, high dace, tsawon rai da kuma tattalin arziki fa'idodin.
Fabry-Perot (FP) resonator na gani da aka yi amfani da shi a cikin gargajiyasemiconductor lasersgabaɗaya yana oscillates a cikin yanayin tsayi-tsayi da yawa, kuma faɗin layin fitarwa yana da faɗi kaɗan, don haka yana da mahimmanci don haɓaka bayanan gani don samun fitowar kunkuntar layin layi.
Rarraba ra'ayi (DFB Laser) da Rarraba Bragg tunani (DBR) su ne nau'ikan na'urori biyu na na'urori na gani na gani na ciki. Saboda ƙaramar farar grating da kyakkyawan zaɓi na tsawon tsayi, yana da sauƙi don cimma daidaiton madaidaicin kunkuntar fitowar layi. Babban bambanci tsakanin tsarin biyu shine matsayi na grating: tsarin DFB Laser yawanci yana rarraba tsarin lokaci-lokaci na Bragg grating a ko'ina cikin resonator, kuma resonator na DBR yawanci ya ƙunshi tsarin grating na tunani da yankin riba da aka haɗa cikin ƙarshen saman. Bugu da ƙari, lasers na DFB suna amfani da gratings da aka haɗa tare da ƙananan bambanci mai mahimmanci da ƙananan haske. Laser na DBR suna amfani da gratings na saman tare da babban bambancin ma'anar refractive da babban nuna haske. Dukansu tsarin suna da babban kewayon sifofi na kyauta kuma suna iya yin gyaran tsayin tsayi ba tare da tsallen yanayi ba a cikin kewayon nanometer kaɗan, inda Laser DBR yana da kewayon daidaitawa fiye daFarashin DFB. Bugu da kari, fasahar ra'ayi na gani na rami na waje, wanda ke amfani da abubuwan gani na waje don amsa hasken wutar lantarki mai fita na guntu Laser na semiconductor kuma zaɓi mitar, kuma na iya gane kunkuntar aikin laser semiconductor.
(2) Fiber Laser
Fiber Laser da high famfo hira yadda ya dace, mai kyau katako ingancin da high hada guda biyu yadda ya dace, waxanda suke da zafi bincike batutuwa a cikin Laser filin. A cikin mahallin shekarun bayanan, Laser fiber yana da kyakkyawar dacewa tare da tsarin sadarwar fiber na gani na yanzu a kasuwa. Laser firikwensin firikwensin firikwensin guda ɗaya tare da fa'idodin kunkuntar layin nisa, ƙaramar amo da kyakkyawar haɗin kai ya zama ɗayan mahimman kwatance na ci gabanta.
Single a tsaye yanayin aiki ne ainihin fiber Laser cimma kunkuntar line-nisa fitarwa, yawanci bisa ga tsarin da resonator na guda mitar fiber Laser za a iya raba zuwa DFB irin, DBR irin da zobe irin. Daga cikin su, ka'idar aiki na DFB Laser da DBR guda-mita fiber Laser yayi kama da na DFB da DBR semiconductor lasers.
A cikin 1960, Laser na farko na ruby na duniya shine laser mai ƙarfi mai ƙarfi, wanda ke da ƙarfin fitarwa mai girma da ɗaukar nauyi mai faɗi. Tsarin sararin samaniya na musamman na Laser mai ƙarfi-jihar ya sa ya fi sauƙi a cikin ƙira na kunkuntar fitarwa na layi. A halin yanzu, manyan hanyoyin da aka aiwatar sun haɗa da gajeriyar hanyar rami, Hanyar rami na zobe guda ɗaya, daidaitaccen daidaitaccen hanyar intracavity, Hanyar kogon yanayin torsion pendulum, Hanyar Bragg grating da hanyar allurar iri.
Lokacin aikawa: Juni-03-2025