Laser ntxuav yog ib qho khoom plig rau lub zej zog physics los pab khaws cov tsev keeb kwm. Cov pa phem, tshwj xeeb yog sulfuric acid aerosols, cuam tshuam nrog calcium carbonate pej thuam, tsim ib txheej ntawm plaster uas muaj calcium sulfate thiab dej. Laser tu yuav siv tau los tshem tawm cov zaj duab xis deposits thiab cov kab mob xws li sulfates thiab nitrates los ntawm marble lug. Daim duab 1 hauv qab no qhia tau hais tias ib tug pej thuam nrog dub deposits rau nws.
Thaum sib piv laser tu rau lwm txoj kev tu pob zeb, tus qub sawv tawm rau nws qhov tseeb, kov tsis siv, thiab ntau yam. Kev siv dav dav ntawm kev ntxuav laser yog thawj zaug inhibited vim qhov kev xav tias nws yog ib txoj hauv kev nyuaj thiab muaj kev txwv rau kev nkag mus rau thawj monuments rau kev sim. cov
Txawm li cas los xij, kev txhim kho hauv cov qauv ntawm laser pulse kev sib cuam tshuam nrog pob zeb thiab thev naus laus zis hauv cov tshuab laser tau kov yeej cov kev xav tsis thoob no, thiab kev ntxuav laser tau dhau los ua tus thawj coj hauv kev tu cov keeb kwm keeb kwm. cov
Yog li ntawd, txhawm rau hais txog thawj ob lo lus nug uas tau tshwm sim thaum pib ntawm tsab xov xwm no, peb tuaj yeem teb tau tias cov tshuab laser pulsed, xws li 1064 nm Nd: YAG laser, thiab lawv cov kev sib haum xeeb wavelengths yog npaj rau kev ntxuav pob zeb. cov
Lwm hom pulse lasers nrog adjustable mem tes dav kuj siv tau. cov
Raws li qhov zoo ntawm laser tu tshaj sandblasting, txhuam, tshuaj txoj kev thiab ultrasonics, nws tuaj yeem hais tias nws yog txoj kev tsis sib cuag thiab qhov tseeb ntawm kev tshem cov yeeb yaj kiab tso tawm.
Txhawm rau teb tag nrho cov lus nug thib peb, plaub, thiab thib tsib, ib qho yuav tsum xav txog qhov xwm txheej ntawm laser pulse kev cuam tshuam nrog lub pob zeb. Kev sib cuam tshuam ntawm laser pulses nrog pob zeb tuaj yeem muab faib ua tus kheej txwv thiab tsis-tus kheej-limiting laser ablation txheej txheem. Nyob rau hauv cov ntaub ntawv ntawm nws tus kheej-txheej laser ablation txheej txheem, qhov kev puas tsuaj ntawm cov deposited contamination zaj duab xis yog tsawg dua li ntawm lub hauv paus substrate. cov
Ntawm qhov tod tes, rau cov txheej txheem tsis-tus kheej-txheej laser ablation, qhov kev puas tsuaj ntawm cov substrate thiab zaj duab xis yog ze rau ib leeg. cov
Yog li ntawd, nyob rau hauv cov ntaub ntawv qub, cov txheej txheem ntxuav yuav yooj yim dua, vim hais tias yog siv lub zog laser pulse thiab ntev (lub sij hawm laser fluence yog dav siv, uas txhais tau hais tias lub zog ib cheeb tsam, hauv Joules / cm2), ces cov pa phem. zaj duab xis yuav raug tshem tawm. Evaporates ua ntej ua kev puas tsuaj rau lub hauv paus substrate. Rau cov teeb meem uas tsis yog tus kheej, qhov kev pheej hmoo ntawm kev puas tsuaj yog ntau dua.
Ntau tus neeg ua haujlwm hauv kev ua haujlwm ntawm laser tu rau kev kos duab kho dua tshiab siv fiber ntau lasers vim tias lawv qhov yooj yim thiab muaj peev xwm los ci lub nqaj mus rau qhov chaw nyuaj-rau-mus txog ntawm cov duab. Kev ua haujlwm ntawm laser tu yog ib qho kev ua haujlwm ntawm nws tus kheej, xav tau tus kws tshaj lij thiab fiber ntau laser kom ua tiav qhov yooj yim. Lasers feem ntau yog hom kev lag luam, thiab cov tshuab laser tsis muaj qhov txav mus los. Yog tias koj siv MOPA (Master Oscillator Power Amplifier) laser, koj tau txais laser pulses tunable thiab tsis muaj crystal aging zoo li Nd:YAG lasers. Daim duab 3 qhia tus neeg teb xov tooj siv fiber ntau laser los ntxuav cov duab kos.
Ib qho tseem tuaj yeem taw qhia tias kev siv lasers rau kev ntxuav pob zeb yog kev noj qab haus huv rau ib puag ncig vim tias cov txheej txheem tsis tsim cov teeb meem ntau npaum li sandblasting. Tus neeg teb xov tooj yuav tsum tau hnav tsom iav tiv thaiv laser.
