Laser yog dab tsi?
Nyob rau hauv luv luv, lub laser yog lub teeb tsim los ntawm excitation ntawm teeb meem. Thiab peb tuaj yeem ua haujlwm ntau nrog lub teeb ci laser.
Hauv Wikipedia, A laseryog ib yam khoom uas emits lub teeb los ntawm ib tug txheej txheem ntawm optical amplification raws li lub stimulated emission ntawm electromagnetic hluav taws xob. Lo lus "laser" yog lub ntsiab lus rau "lub teeb amplification los ntawm kev txhawb nqa emission ntawm hluav taws xob". Thawj lub laser tau tsim nyob rau xyoo 1960 los ntawm Theodore H. Maiman ntawm Hughes Research Laboratories, raws li kev ua haujlwm theoretical los ntawm Charles Hard Townes thiab Arthur Leonard Schawlow.
Lub laser txawv ntawm lwm qhov chaw ntawm lub teeb nyob rau hauv uas nws emits lub teeb uas yog coherent. Spatial coherence tso cai rau lub laser tsom mus rau qhov chaw nruj, ua kom cov ntawv thov xws li laser txiav thiab lithography. Spatial coherence kuj tso cai rau lub laser beam kom nyob nrug deb ntawm qhov zoo (collimation), ua rau cov ntawv thov xws li laser pointers thiab lidar. Lasers tseem tuaj yeem muaj kev sib raug zoo ntawm lub cev, uas tso cai rau lawv tawm lub teeb nrog qhov nqaim heev. Xwb, kev sib raug zoo ntawm lub cev tuaj yeem siv los tsim cov duab ultrashort ntawm lub teeb nrog lub dav spectrum tab sis ntev li luv luv li femtosecond.
Lasers yog siv nyob rau hauv optical disc drives, laser printers, barcode scanners, DNA sequencing instruments, fiber-optic, semiconducting nti manufacturing (photolithography), thiab free-chaw optical kev sib txuas lus, laser phais, thiab kev kho mob ntawm daim tawv nqaij, txiav thiab vuam cov ntaub ntawv, tub rog thiab tub ceev xwm pab kiag li lawm rau kos lub hom phiaj thiab ntsuas ntau yam thiab ceev, thiab nyob rau hauv laser teeb pom kev zoo.
Tom qab ntev keeb kwm kev loj hlob ntawm laser technology, lub laser yuav siv tau nyob rau hauv ntau yam kev lag luam daim ntawv thov, thiab ib tug ntawm cov feem ntau kiv puag ncig yog siv rau tej kev lag luam, tsis muaj hlau cov hlau los yog non-hlau kev lag luam, laser txiav tshuab hloov cov tsoos txiav txoj kev, txhim kho ntau ntau efficiency rau cov tsim kev lag luam, xws li tsoos tsho, textile, ntaub pua plag, ntoo, acrylic, advertisement, metalworking, rooj tog hauv tsev, tsheb thiab qoj khoom.
Laser tau dhau los ua ib qho ntawm cov cuab yeej txiav zoo tshaj plaws ua rau nws lub siab raug thiab siab ceev txiav nta.
Learm Ntau Laser Technology