Xyoo 2021, Tuam Tshoj yuav yog tib txoj kev lag luam loj hauv ntiaj teb kom rov zoo sai los ntawm 2020 kev sib kis.Tus nqi ntxiv ntawm kev lag luam saum toj no qhov loj me nyob rau hauv tag nrho lub xyoo yuav nce los ntawm 9.6% nyob rau hauv lub xyoo dhau los, uas ntxiv tus nqi ntawm high-tech manufacturing thiab cov cuab yeej tsim khoom yuav nce ntxiv.18.2%, 12.9%.Hauv particular, Tuam Tshoj txoj kev lag luam laser tau tsim sai heev nyob rau hauv xyoo tas los no, thiab cov nplai ntawm cov saw hlau kev lag luam tau nce sai heev.Xyoo 2020, tag nrho cov nyiaj tau los ntawm kev muag khoom ntawm cov khoom siv laser (nrog rau kev xa khoom) hauv kev lag luam, cov ntaub ntawv, kev lag luam, tshuaj thiab kev tshawb fawb txog kev tshawb fawb yuav yog 69.2 billion yuan, ib xyoos ib zaug nce ntau dua 2019. nce 5.2 feem pua cov ntsiab lus.Nrog rau kev vam meej txuas ntxiv ntawm photovoltaic, fais fab roj teeb, tsheb thiab lwm yam kev lag luam, tag nrho cov nyiaj tau los ntawm Tuam Tshoj cov khoom siv laser lag luam yuav nce 15.6% xyoo-rau-xyoo hauv 2021, mus txog 80 billionyuan.
▲2010-2021 Tuam Tshoj cov khoom siv laser
Nyob rau tib lub sijhawm, thev naus laus zis ntawm laser kuj tseem nrawm nrawm.Ua ntej, lub twj tso kua mis thev naus laus zis tau hloov pauv los ntawm 915nm kev daws teeb meem nrog qhov dav dav ntawm qhov ntsuas kub mus rau 976nm kev daws teeb meem nrog kev nqus ntau dua.Tam sim no, nyob rau hauv lub twj tso kua mis technology txoj kev ntawm high-power nruam fiber ntau lasers, lub 976nm twj Pu tshuab tau dhau los ua lub ntsiab kev daws teeb meem.Tsis tas li ntawd, hauv kev siv tshuab ntawm 10,000-watt lasers, yeej ib txwm muaj kev sib ntaus sib tua ntawm "ib leeg-channel fiber ntau amplification" thiab "multi-channel beam synthesis".Kev ua lag luam txuas ntxiv txhim kho, thiab cov ntsiab lus dav xws li thev naus laus zis, nqi thiab kev ua haujlwm Nws tau dhau los ua qhov tseem ceeb rau kev xaiv cov lag luam fiber ntau laser.Cia peb tawg ob txoj hauv kev.
10,000-watt laser technology txoj kev taw qhia
1. Multi-channel beam ua ke tswvyim
Raws li cov txheej txheem sib txawv, fiber ntau lasers tuaj yeem muab faib ua: ncaj qha oscillator qauv fiber ntau lasers thiab tus tswv oscillator fais fab amplifier (MOPA) qauv fiber ntau lasers.Lub laser fiber ntau nrog cov qauv oscillator ncaj qha yog qhov yooj yim hauv cov qauv thiab tsuas yog muaj lub laser oscillator, thiab cov grating xaiv thiab tso tawm cov kev xaiv tshwj xeeb wavelength.
Rau lub fiber ntau laser nrog ib tug ncaj oscillator configuration, nws tsuas yog muaj ib tug khub ntawm gratings (tsawg reflection + siab xav), ib tug nce fiber ntau, thiab ob peb lub twj tso kua mis.Ntau kab teeb ntawm lub teeb twj tso kua mis yog txuas mus rau hauv ib qho kev nce fiber ntau los ntawm kev sib txuas ntawm cov kab hluav taws xob, kom qhov nce fiber ntau yog nyob rau hauv lub xeev ntawm inversion faib ntawm cov xov tooj ntawm cov khoom, thiaj li ua kom paub lub zog hluav taws xob amplification ntawm lub teeb, thiab thaum kawg xaiv ib tug tshwj xeeb wavelength ntawm lub teeb laser los ntawm qhov tsis tshua muaj kev cuam tshuam grating kom dhau los ntawm cov zis fiber ntau.kis mus rau qhov tso zis header.
▲ Fiber laser raws li tus qauv oscillator ncaj qha
Raws li cov kev sib txawv ntawm cov twj tso kua mis, nws tuaj yeem muab faib ua: pem hauv ntej twj tso kua mis, rov qab twj tso kua mis thiab ob txoj kev twj tso kua mis.Lub twj tso kua mis lub teeb txhaj cov kev taw qhia yog tib yam li cov kev taw qhia tso zis laser yog hu ua pem hauv ntej twj;lub twj tso kua mis lub teeb txhaj tshuaj yog tib yam li lub laser tso zis kev taw qhia rov qab mus rau pem hauv ntej thiab rov qab twj tso kua mis;lub teeb lub twj tso kua mis yog txhaj los ntawm cov lus qhia rau pem hauv ntej thiab rov qab rau tib lub sijhawm.hu ua bidirectional pumping.Tam sim no, ob qho tib si GW thiab IPG siv ob txoj kev siv cov twj tso kua mis pom hauv daim duab saum toj no.
Tam sim no, fiber ntau laser los yog module nrog ib tug mainstream ncaj oscillator qauv muaj lub zog ntawm 3KW, thiab ib tug siab zog laser yog ua ke los ntawm ib tug module mus rau lwm tus, uas yog, lub teeb tso zis los ntawm ntau modules yog ua ke los ntawm ib tug beam combiner. .mus rau hauv ib lub fiber thiab ces tso zis.Piv txwv li, 12KW tau txais los ntawm kev sib txuas ntawm plaub 3KW modules.
▲ High-power fiber laser nrog ntau-channel beam synthesis tswvyim
2. Ib leeg-channel fiber ntau amplification tswvyim
Cov fiber ntau laser nrog MOPA qauv suav nrog lub laser oscillator thiab ib lossis ntau theem ntawm fiber ntau amplifiers.Lub wavelength xaiv los ntawm cov grating nyob rau hauv lub oscillator yog siv raws li lub noob lub teeb, thiab lub noob lub teeb yog amplified nyob rau hauv qhov kev txiav txim ntawm multistage amplifier, thiaj li hais tias cov zis hwj chim yuav tau mus rau ib tug tej yam degree.kev txhim kho.
Rau xws li high-power lasers, lub zog nce yog tsis tiav los ntawm kev nce tus naj npawb ntawm modules, tab sis feem ntau yog los ntawm multi-theem amplifiers.Piv txwv li, 12KW tau txais los ntawm 3-theem amplification.
▲ Ib-channel fiber ntau amplification tswvyim raws li MOPA configuration High-power fiber ntau laser
Qhov zoo ntawm multiplexing 10,000-watt lasers
1.Cov qauv ntawm tag nrho lub tshuab yog yooj yim thiab yooj yim los tswj
Txij li thaum ib leeg-channel amplified high-power laser muaj tsuas yog ib qho module, qhov kev teeb tsa sab hauv ntawm lub teeb, hluav taws xob thiab dej yog qhov nyuaj dua.Nws txoj kev tswj hwm yog qhov nyuaj dua, thiab oscillator thiab amplifier yuav tsum tau ua raws li qee lub sijhawm kev sib raug zoo thaum qhib thiab tawm: thaum tig lub laser, lub oscillator yuav tsum tau qhib ua ntej, thiab tom qab ntawd lub amplifier yuav tsum tau tig los ntawm lub tshuab hluav taws xob. thawj theem amplifier;Lub amplifier theem pib, thiab lub amplifier raug tua ib kauj ruam mus rau pem hauv ntej.Thaum lub sij hawm ua tsis tiav, nws yuav ua rau muaj kev puas tsuaj loj rau lub laser.
Cov txheej txheem kev sib txuas ntawm cov kab hluav taws xob ntau tau txais los ntawm GW laser, kev tswj lub laser yog qhov yooj yim, tsis muaj teeb meem sijhawm, teeb meem kev tswj hwm, thiab yuav tsis ua rau lub tshuab puas.Nyob rau hauv qhov kev tshwm sim ntawm ib tug laser tsis ua hauj lwm, kev kho yuav ua tau tsuas yog los ntawm tshem tawm lub puas module thiab hloov nws nrog ib tug tshiab.Rau cov neeg siv khoom, nws txuag lub sijhawm kho ntau dua.
2. Muaj zog tiv thaiv rov qab lub teeb muaj peev xwm
Sib txawv ntawm oscillators, tsis muaj grating ntawm ob qhov kawg ntawm qhov nce fiber ntau ntawm lub amplifier.Lub teeb xa rov qab thaum ua cov ntaub ntawv muaj kev cuam tshuam siab lossis rov qab lub teeb ntawm lub suab nrov tom qab tau yooj yim rov qab mus rau lub suab nrov ua ntej, uas cuam tshuam nrog kev ua haujlwm ntawm lub tshuab ua ntej thiab txawm tias ua rau muaj kev puas tsuaj.Yog li ntawd, nws yog ib qho tsim nyog yuav tau ntxiv cov kev ntsuas kho qhov muag cais tawm ntxiv.
GW laser's multi-beam synthesis tswvyim, txhua lub module tsuas muaj ib qho oscillator, thiab tsis muaj lub teeb rov qab;Nyob rau tib lub sijhawm, qhov tshwj xeeb zais cia ntawm GW laser - ABR los tiv thaiv-siab-reflection thev naus laus zis: ib qho module yog nruab nrog tsib-theem rov qab teeb pom kev thiab stripping ntaus ntawv; Raws li tsib-theem anti-reflection ntawm ib ib qho module, txhua lub module yog nruab nrog thawj-theem tiv thaiv rov qab lub teeb khoom, uas tuaj yeem tiv thaiv cov khoom sab hauv los ntawm kev puas tsuaj, ua kom ruaj khov ntawm laser, thiab yooj yim txiav kub, nyiaj, cov ntaub ntawv zoo heev xws li tooj liab thiab aluminium yog tsim rau ntau yam kev siv vuam.
3. Bidirectional twj tso kua mis txhim kho qhov system stability
➢ Tshem tawm lub suab nrov laser
Rau pem hauv ntej thiab rov qab twj tso kua mis, lub twj tso kua mis lub teeb yog txhaj rau hauv ytterbium-doped fiber ntau los ntawm ib kawg, thiab lub twj tso kua mis lub teeb muaj zog dua nyob rau hauv qhov kawg ntawm ytterbium-doped fiber, yog li cov particle inversion excitation kuj muaj zog, tab sis vim yog qhov nqus tau zoo, lub twj tso kua mis muaj zog.Lub teeb yuav raug attenuated raws qhov ntev ntawm cov fiber ntau kom nce saturation mus txog ntawm qhov ntev fiber ntau thiab lub suab nrov.Bidirectional twj tso kua mis tuaj yeem ua rau lub teeb pom kev sib npaug sib npaug hauv cov fiber ntau, kom qhov nce kuj tseem faib tau tusyees hauv fiber ntau, kom lub suab nrov txo.
➢ Tshem tawm qhov siab ib leeg
Lub twj tso kua mis ntau dhau lub zog yog ua ke rau hauv qhov nce fiber ntau, thiab qhov pib ntawm qhov nce fiber ntau absorbs lub teeb lub teeb ntau, yog li qhov kub ntawm fiber ntau yog qhov siab tshaj plaws nyob rau hauv thawj seem, thiab fiber ntau melting point bears lub siab tshaj plaws.Ob-kawg twj tso kua mis tuaj yeem ua rau ob lub ntsiab lus melting ntawm ob sab ntawm qhov nce fiber ntau sib koom lub siab, ua rau lub cev khiav ntau ruaj khov.
➢ Txhim kho qhov pib ntawm hom tsis ruaj khov
Hom instability muaj feem xyuam rau thermal loading ntawm qhov nce fiber ntau.Tom qab ob-kawg siv txoj kev tau txais, qhov kub thiab txias ntawm qhov nce fiber ntau tuaj yeem ua kom zoo dua qub, cov nyhuv thermal tsis muaj zog, thiab tus nqi pib ntawm hom tsis ruaj khov yog nce.4
.976nm twj tso kua mis muaj qhov zoo tshaj plaws
▶ Kev hloov pauv siab dua
Ytterbium-doped fiber ntau muaj ob lub zog nqus peaks ntawm 915nm thiab 976nm, yog li lub twj tso kua mis lub teeb feem ntau xaiv rau ytterbium-doped fiber ntau laser yog 915nm lossis 975nm.Ntawm lawv, qhov nqus siab tshaj plaws ntawm 975nm yog siab dua, uas yog li 3 npaug ntawm 915nm, yog li 1070nm laser nrog tib lub zog siv tsuas yog ib feem peb ntawm 915nm twj tso kua mis.Lub twj tso kua mis hloov pauv los ntawm lub zog hluav taws xob, uas txhais tau hais tias siv lub twj tso kua mis 976nm siv hluav taws xob tsawg dua thiab muaj txiaj ntsig zoo thiab txuag hluav taws xob.
▶ Cov teebmeem uas tsis yog-linear qis dua
Nyob rau hauv tas li ib-zaug fiber ntau laser, muaj ib co nonlinear teebmeem, xws li stimulated Brillouin scattering, stimulated Raman scattering, thiab optical Kerr effect, uas yuav degrade lub beam zoo.Tau txais txiaj ntsig los ntawm qhov siab dua qhov siab tshaj plaws ntawm 976nm, qhov nce fiber ntau tuaj yeem ua luv luv raws li qhov ua tau zoo ntawm qhov nqus tau zoo tib yam, thiab txo qhov ntev ntawm fiber ntau pab kom tsis txhob muaj cov teebmeem nonlinear.
Epilogue
GW Laser (GW) yog raws li 976nm twj tso kua mis technology thiab multi-channel beam synthesis tswvyim raws li cov kab tseem ceeb, thiab tau cog lus rau kev txhim kho lub hwj chim theem thiab beam zoo ntawm 10,000-watt lasers;Nyob rau tib lub sijhawm, nws kuj tseem them nyiaj rau kev txhim kho qhov zoo thiab ruaj khov ntawm cov khoom, txo cov khoom lag luam tsis ua haujlwm thiab qhov nyuaj ntawm kev tuav tsis tau.Nyob rau hauv lub neej yav tom ntej, peb yuav txuas ntxiv muab cov neeg siv khoom zoo fiber ntau lasers thiab muaj zog kev txhawb nqa.
Post lub sij hawm: Mar-21-2022