Laser txiav tshuab yog siv lub zog siab ceev laser beam kom irradiate cov khoom yuav tsum tau txiav, kom cov khoom yog sai rhuab mus rau lub vaporization kub thiab evaporated los tsim ib lub qhov. Nrog lub nqaj txav ntawm cov khoom siv, lub qhov txuas txuas ntxiv ua ib txoj kab nqaim (xws li li 0.1mm) kom tiav cov khoom txiav. Laser txiav yog ib qho ntawm cov txheej txheem thermal txiav.
Cov cuab yeej laser tau hloov kho thiab kho dua tshiab thiab nrawm dua. Kev lag luam laser hauv tsev thiab txawv teb chaws tau nce mus rau lub sijhawm ntawm kev loj hlob sai, thiab nanosecond, picosecond thiab femtosecond tau maj mam dhau los ua qhov tseem ceeb ntawm kev ua lag luam. Nws yog dav siv nyob rau hauv ntau yam kev tsim thiab kev lag luam xws li cov ntawv hlau ua, aviation, aerospace, electronics, electronics, subway accessories, tsheb, grain machinery, textile machinery, engineering machinery, precision accessories, ships, metallurgical khoom, elevators, tsev neeg khoom siv, khoom plig khoom plig, cuab yeej ua, kho kom zoo nkauj, tshaj tawm, hlau sab nraud ua, khoom siv hauv chav ua noj, thiab lwm yam.
Qhov sib txawv ntawm nanosecond, picosecond thiab femtosecond hauv laser txiav
Lub nanosecond, picosecond thiab femtosecond nyob rau hauv cov khoom siv laser xa mus rau lub sijhawm tswj chav nyob hauv cov txheej txheem laser. Feem ntau, kev ua laser yog ib lub zog pulse uas ua rau ntawm cov khoom siv hauv lub sijhawm luv luv, thiab cov ntaub ntawv drilling, txiav, cim, vuam thiab lwm yam kev siv los ntawm kev ua haujlwm ntau zaus.
Nyob rau tib lub sijhawm, nws yuav tsum nkag siab tias 1s =109 nanoseconds =1012 picoseconds=1015 femtoseconds, yog li nanosecond, picosecond thiab femtosecond laser ua khoom siv feem ntau pom hauv khw muaj npe raws li lub sij hawm ntsuas, thiab tseem muaj ntau yam lwm yam xws li ib leeg mem tes zog, mem tes dav, mem tes zaus, mem tes ncov hwj chim, thiab lwm yam . Lub sijhawm luv dua, lub sijhawm luv dua uas lub laser ua rau ntawm cov khoom nto, qhov cuam tshuam me dua ntawm cov khoom nto, thiab qhov ua tau zoo dua.
Cov khoom siv sib txawv ntawm nanosecond, picosecond thiab femtosecond hauv laser txiav
Raws li kev ua haujlwm sib txawv, cov sijhawm sib txawv tau xaiv, yog li muaj cov cai naming rau nanosecond, picosecond thiab femtosecond laser khoom. Piv txwv li, nanosecond ultraviolet laser txiav tshuab feem ntau yog siv rau nyias zaj duab xis cov ntaub ntawv ua, picosecond ultraviolet laser txiav tshuab feem ntau yog siv rau brittle cov ntaub ntawv ua, femtosecond ultraviolet laser txiav tshuab yog siv rau conductive nyias zaj duab xis oxide thiab lwm yam ntaub ntawv ua (ultraviolet muaj npe. Raws li txoj cai wavelength, 355nm laser).
Kev ua daim ntawv thov sib txawv ntawm nanosecond, picosecond thiab femtosecond hauv laser txiav
Laser drilling yog ib qho ntawm cov kev siv ntau ntawm picosecond laser. Picosecond laser tuaj yeem ua tiav lub qhov ua tiav los ntawm kev cuam tshuam rau qhov drilling thiab xyuas kom meej qhov sib xws ntawm lub qhov. Ntxiv rau lub rooj tsav xwm hauv Circuit Court, picosecond lasers tseem tuaj yeem xyaum qhov zoo hauv cov yeeb yaj kiab yas, cov khoom siv hluav taws xob, cov yeeb yaj kiab hlau, sapphires thiab lwm yam ntaub ntawv.
Linear ablation (tshem tawm txheej) yog ib qho ntawm cov ntawv thov ntawm picosecond laser micromachining, uas tuaj yeem tshem tawm cov txheej txheem kom raug yam tsis muaj kev puas tsuaj lossis me ntsis ua rau cov khoom siv substrate. Ablation tuaj yeem yog ob peb microns dav kab lossis ob peb square centimeters ntawm thaj chaw loj tshem tawm. Vim tias qhov tuab ntawm cov txheej txheej feem ntau yog tsawg dua qhov dav ntawm qhov ablation, qhov kub tsis tuaj yeem ua rau sab. Yog li ntawd, nanosecond mem tes dav laser siv tau.
Precision laser txiav yog ib qho ntawm cov kev siv ntau ntawm femtosecond laser. Femtosecond laser siv tau los txiav ntau yam substrates.
