Laser (Light Amplification by Stimulated Emission of Radiation) thev naus laus zis siv cov kab teeb ci ntawm cov teeb pom kev sib txuas, kev hloov pauv hloov zuj zus txij li nws tsim nyob rau xyoo 1960. Tsis zoo li lub teeb pom kev zoo tib yam, lub teeb laser yog monochromatic, kev taw qhia, thiab muaj zog heev, ua kom muaj kev ncaj ncees thiab kev tswj hwm.
Lub hauv paus ntsiab lus ntawm cov thev naus laus zis no yog kev txhawb nqa emission, qhov twg atoms tso photons nyob rau theem, tsim kom muaj kev sib zog, ib qho - wavelength beam. Cov cuab yeej tshwj xeeb no ua rau nws tseem tsis tau muaj nyob hauv ntau lub teb. Hauv cov tshuaj, lasers pab kom muaj kev phais me me, kho qhov muag meej (LASIK), thiab kev kho mob dermatological. Kev tsim khoom thiab kev ua cov ntaub ntawv cia siab rau lasers rau kev txiav, vuam, drilling, thiab engraving nrog micron- qib raug, qhov tseem ceeb hauv kev lag luam tsheb thiab aerospace. Kev sib txuas lus hauv qab yog tsim los ntawm fiber ntau - optic cables nqa cov ntaub ntawv ntawm laser pulses, ua kom siab - internet ceev. Tsis tas li ntawd, lasers yog qhov tseem ceeb hauv kev tshawb fawb txog kev tshawb fawb (xws li, spectroscopy, fusion thwmsim), kev tiv thaiv kab mob (xws li, tsom, tiv thaiv missile), thiab cov khoom siv niaj hnub xws li barcode scanners, optical drives, thiab cov tshuab luam ntawv.
Kev tsim kho tshiab txuas ntxiv tshawb nrhiav cov pulses ultrafast pulses, qib siab zog, thiab cov ntaub ntawv tshiab, thawb cov ciam teb ntawm yam twg tuaj yeem ntsuas, tsim, thiab kho. Los ntawm cov txheej txheem microscopic mus rau kev sib txuas lus interstellar, laser tshuab tseem yog lub hauv paus ntawm kev tsim kho tshiab niaj hnub no, ua rau lub neej yav tom ntej nrog nws qhov tsis sib xws thiab ntau yam.
