Lub laser yog dab tsi?
Hauv ntej, lub laser yog lub teeb uas tsim los ntawm kev ua kom lub cev muaj zog. Thiab peb tuaj yeem ua ntau yam haujlwm nrog lub teeb laser.
Hauv Wikipedia, A laseryog ib lub cuab yeej uas tso tawm lub teeb los ntawm cov txheej txheem ntawm kev ua kom pom kev zoo raws li kev tso tawm ntawm cov hluav taws xob electromagnetic. Lo lus "laser" yog ib lo lus luv rau "kev ua kom pom kev zoo los ntawm kev tso tawm ntawm cov hluav taws xob". Lub laser thawj zaug tau tsim tsa 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.
Ib lub laser txawv ntawm lwm qhov chaw ntawm lub teeb uas nws tso tawm lub teeb uas sib xws. Kev sib raug zoo ntawm qhov chaw tso cai rau lub laser kom tsom mus rau qhov chaw nruj, ua rau cov ntawv thov xws li kev txiav laser thiab lithography. Kev sib raug zoo ntawm qhov chaw kuj tso cai rau lub teeb laser kom nyob nqaim dhau qhov deb heev (collimation), ua rau cov ntawv thov xws li laser pointers thiab lidar. Lasers kuj tseem tuaj yeem muaj kev sib raug zoo ntawm lub sijhawm siab, uas tso cai rau lawv tso tawm lub teeb nrog lub spectrum nqaim heev. Xwb, kev sib raug zoo ntawm lub sijhawm tuaj yeem siv los tsim cov pulses ultrashort ntawm lub teeb nrog lub spectrum dav tab sis lub sijhawm luv luv li femtosecond.
Cov lasers siv rau hauv cov optical disc drives, laser printers, barcode scanners, DNA sequencing instruments, fiber-optic, semiconducting chip manufacturing (photolithography), thiab free-space optical communication, laser phais, thiab kev kho tawv nqaij, txiav thiab vuam cov ntaub ntawv, tub rog thiab tub ceev xwm cov khoom siv rau kev cim cov hom phiaj thiab ntsuas qhov ntau thiab qhov ceev, thiab hauv laser teeb pom kev zoo rau kev lom zem.
Tom qab kev txhim kho keeb kwm ntev ntawm cov thev naus laus zis laser, lub laser tuaj yeem siv rau hauv ntau daim ntawv thov kev lag luam sib txawv, thiab yog ib qho ntawm kev hloov pauv tshaj plaws yog tias siv rau kev txiav kev lag luam, tsis muaj hlau lossis kev lag luam tsis yog hlau, lub tshuab txiav laser hloov kho txoj kev txiav ib txwm muaj, txhim kho ntau yam kev ua haujlwm zoo rau kev lag luam tsim khoom, xws li khaub ncaws, textile, ntaub pua plag, ntoo, acrylic, kev tshaj tawm, hlau ua haujlwm, tsheb, khoom siv qoj ib ce thiab rooj tog zaum lag luam.
Laser tau dhau los ua ib qho ntawm cov cuab yeej txiav zoo tshaj plaws vim nws cov yam ntxwv txiav siab thiab ceev.
Kawm Ntau Ntxiv Txog Kev Siv Tshuab Laser