Tus principle ntawm laser
Lub laser muaj qhov tso tawm cov twj tso kua mis, qhov nce nruab nrab nrog cov theem ntawm cov hluav taws xob me me, thiab lub twj tso tawm. Kev noj cov semiconductor pumped fiber laser ua piv txwv, cov txheej txheem tshwj xeeb ntawm cov cim laser tuaj yeem muab faib rau tsib yam hauv qab no hauv kev nthuav dav:
Hauv thawj kauj ruam, lub twj tso kua mis lub teeb tawm, thiab lub tshuab hluav taws xob (semiconductor laser), raws li lub twj tso kua mis ntawm lub laser, tawm cov twj tso kua mis lub teeb nrog qee qhov kab thiab nkag mus rau hauv fiber tom qab dhau ntawm cov nqaj sib txuas;
Hauv theem ob, qhov nce qhov nruab nrab yog energized, thiab qhov nce fiber nqus lub twj tso kua mis lub teeb ntawm lub yoj yoj ib qho, uas ua rau lub zog hloov ntawm lub particle mus txog rau lub xeev metastable;
Hauv theem thib peb, photons yog tsim los ntawm kev tsim kho, thiab cov pa hluav taws xob hauv lub xeev tau hloov mus rau sab hauv los tso lub zog, ua cov duab photons nrog cov lus qhia sib txawv thiab theem;
Kauj ruam plaub yog los paub qhov ua kom pom tseeb kev tsim kho los ntawm hluav taws xob. Photons txav raws lub axis tuaj yeem txav rov qab thiab tawm ntawm cov iav (kev txaus siab) (photons tsis khiav raws lub axis khiav tawm ceev ceev), thiab photons tuaj yeem tsim homogeneous photons thaum lawv ntsib cov khoom muaj zog (metastable) hauv qhov nruab nrab nce, thiaj li ua tiav qhov ua kom muaj zog;
Thib tsib kauj ruam, laser tso zis, tom qab ncav qee qhov kev xav tau los ua kom txuas ntxiv lossis daim qauv mem tes ntawm cov zis laser.
Kev faib tawm laser
Muaj plaub hom kev faib tawm ntawm lasers: nce nruab nrab, tso zis tawm zog, hom kev ua haujlwm, thiab mem tes dav.
Raws li qhov nce nruab nrab: qhov nce nruab nrab ntawm cov laser suav nrog roj, kua thiab khoom. Qhov tshwj xeeb nce qhov nruab nrab txiav txim siab lub laser wavelength, tso zis tawm hluav taws xob, thiab daim teb thov. CO 2 roj laser yog tus sawv cev hauv cov roj, ruby laser, semiconductor laser, fiber ntau laser, thiab YAG laser yog tus sawv cev hauv cov khoom.
Raws li lub zog tsim tawm: nws tuaj yeem faib ua lub zog me (0-100w), nruab nrab lub zog (100-1kw), thiab lub zog siab (saum toj no 1 kW); tab sis qee zaus nws tau txhais tias yog nruab nrab nruab nrab hauv thaj tsam ntawm 1 00-1. 5 kw. Sib txawv lub zog laser yoog rau nyias daim ntawv thov scenarios.
Raws li kev ua haujlwm hom: nws tuaj yeem muab faib ua cov nruam laser thiab mem tes laser. Lub tshuab CW laser tuaj yeem tsim tawm txuas ntxiv rau lub sijhawm ntev, nrog kev ua haujlwm ruaj khov thiab muaj cov nyhuv ua haujlwm siab. Mem tes laser yog tso zis tawm hauv cov qauv ntawm cov mem tes, uas yog tus cwj pwm los ntawm lub siab ntawm lub zog thiab cov ua haujlwm thermal me me. Raws li qhov ntev ntawm lub sijhawm pulse, pulse laser tuaj yeem muab faib ntxiv rau hauv milliseconds, microseconds, nanoseconds, picoseconds thiab femtoseconds. Feem ntau hais lus, luv luv lub sij hawm mem tes, lub siab dua tus nqi hluav taws xob ib zaug xwb, qhov nqaim ntawm cov mem tes dav, thiab qhov ua tau zoo dua.
Raws li cov zis wavelength: nws tuaj yeem muab faib ua cov duab hluav taws xob infrared, pom laser, UV laser, thiab lwm yam. Cov qauv sib txawv tuaj yeem nqus cov dej sib txawv ntawm qhov sib txawv, piv txwv li, cov hlau tau siab dua nyob ze-infrared haum.
Fiber laser muaj qhov zoo tshwj xeeb hauv kev tsim khoom
Fiber laser txhawb txoj kev loj hlob ntawm cov kev ua cov laser hauv qhov dav thiab qhov tob. Hauv kev coj ua teb, lub zog siab laser txhawb nqa qhov nkag mus rau ntawm cov cuab yeej laser mus rau hauv qhov txiav, vuam, kos, thiab lwm yam txuas ntawm cov cuab yeej siv siab xws li aerospace, kev thauj mus los, thiab lwm yam. laser ua thiab tsim cov kev ua lag luam ntxiv, feem ntau suav nrog kev ua tiav hauv cov khoom siv hluav taws xob, photovoltaic, lithium roj teeb, semiconductor, thiab lwm cov teb.
Los ntawm cov txheej txheem kev pom, fiber ntau laser yog lwm qhov siab dua. Cov cuab yeej zoo ntawm cov khoom siv fiber ntau rau kev ua: 1) cov nqaj zoo zoo, yooj yim kom ua tiav lub zog siab. Kev kho qhov muag raug kaw tag nrho, nrog kev ruaj khov zoo, kev pab lub neej ntev, thiab kev tu me dua. 4) Qhov loj me me, hloov tau yooj yim. -2000nm, uas yog ntau tshaj nyob rau hauv kev tsim cov khoom lag luam.
Los ntawm qhov pom ntawm tus nqi, fiber laser muaj qhov ua tau zoo heev ntawm kev coj ua. Siv CO 2 laser ua kev sib piv:
1) Vim tias qhov nqaj zoo thiab cov khoom nqus siab siab, ua kom ua tiav ntawm cov xim fiber ntau sai dua. Coj qhov txiav ntawm nyias phaj ua piv txwv, qhov txiav ceev ntawm fiber ntau laser ncav cuag 2-3 zaug ntawm qhov ntawd ntawm CO 2 laser nrog lub zog zoo ib yam;
2) Lub tshuab hluav taws xob-fiber hloov pauv ntawm fiber ntau laser hla dhau 30% thiab lub hwj huam noj tau tsawg. The CO 2 laser' s kev kho qhov muag yog nyob ntawm qhov cuam tshuam kom meej. Txoj kev kho qhov muag lwj sai thiab lub zog poob ntau. Tus nqi hluav taws xob hloov pauv hluav taws xob yog hauv qab 10%;
3)Tus qauv ntawm fiber ntau laser yog qhov yooj yim thiab ruaj khov, txoj kev kho qhov muag sab nraud yog txij nkawm-dawb, lub sijhawm nruab nrab ntawm kev ua tsis tiav yog ntau dua li 100000 teev, thiab yeej tsis muaj consumables. Cov qauv ntawm cov pa roj carbon monoxide CO 2 laser system yog qhov nyuaj, qhov hloov kho thiab rov xav tau kev saib xyuas tas li, turbine bearing hloov tus nqi yog kim thiab txij nkawm tus nqi yog siab.
Sib piv cov kev ua haujlwm tseem ceeb ntawm kilowatt industrial laser rau ntawm kev ua lag luam, piv nrog lwm cov lasers, fiber ntau laser muaj qhov zoo ntawm cov txiaj ntsig zoo laser beam tau zoo, lub zog siab, kev siv hluav taws xob zoo, yooj yim siv, ntau cov khoom siv uas Machinable , kev ua haujlwm tsis tshua muaj nqi, thiab lwm yam, yog li nws yog dav siv hauv carving / npav, txiav / drilling, thiab lwm yam, cladding / vuam, kho saum npoo, sai tiv thaiv, thiab lwm yam ntaub ntawv ua thiab kho qhov muag sib txuas lus teb, paub hu ua" thib peb-tiam laser", muaj kev thov dav dav zeem muag.
Lub laser nyob hauv qhov chaw nruab nrab ntawm lub laser kev lag luam saw, thiab Tuam Tshoj tau dhau los ua kev lag luam laser loj tshaj plaws thiab loj tshaj plaws hauv ntiaj teb. Lub laser yog qhov tseem ceeb kho qhov muag ntawm cov khoom siv davhlau ya nyob twg, uas yog nyob rau hauv qhov chaw nruab nrab ntawm cov saw muaj kev lag luam. Nyob rau tib lub sijhawm, los ntawm tus nqi taw qhia, laser tus nqi tso tawm txog li 30% - 50% ntawm tag nrho cov nqi ntawm cov khoom siv, uas yog qhov tseem ceeb tshaj ntawm cov khoom siv laser.