Nkag siab qhov txawv ntawm Laser thiab Ordinary Light thiab Yuav Ua Li Cas Laser Yog Tsim

Laser thev naus laus zis tau hloov pauv ntau yam kev lag luam, los ntawm kev tsim khoom mus rau kev kho mob. Tab sis dab tsi ua rau lub teeb laser txawv ntawm lub teeb zoo tib yam? Kab lus no tshawb txog qhov tseem ceeb ntawm qhov sib txawv thiab cov txheej txheem tseem ceeb ntawm laser tiam.

Qhov txawv ntawm Laser thiab Ordinary Light

1. Monochromaticity: Laser lub teeb muaj zoo heev monochromaticity, lub ntsiab lus nws muaj ib tug wavelength nrog ib tug heev nqaim spectral linewidth. Piv txwv li, lub teeb zoo tib yam yog sib xyaw ntawm ntau lub wavelengths, uas ua rau muaj qhov dav dav.

2. Brightness thiab Zog Ceev: Laser Beams muaj tshwj xeeb lub teeb ci siab thiab lub zog ntom ntom, tso cai rau lawv kom zoo rau lub zog zoo hauv thaj chaw me me. Lub teeb zoo tib yam, thaum pom, muaj qhov ci ntsa iab thiab lub zog concentration tsawg. Vim muaj lub zog loj ntawm cov lasers, cov kev daws teeb meem zoo, xws li cov dej chillers, yog qhov tseem ceeb los tswj kev ua haujlwm ruaj khov thiab tiv thaiv overheating.

3. Kev taw qhia: Laser beams yuav propagate nyob rau hauv ib tug heev parallel yam, tswj lub me me divergence kaum. Qhov no ua rau lasers zoo tagnrho rau kev siv precision. Ordinary lub teeb, ntawm qhov tod tes, radiates nyob rau hauv ntau cov lus qhia, ua rau muaj kev cuam tshuam loj heev.

4. Kev sib raug zoo: Laser lub teeb yog coherent heev, txhais tau tias nws tsis muaj zaus, theem, thiab kev nthuav qhia. Qhov kev sib koom ua ke no ua rau cov ntawv thov xws li holography thiab fiber optic kev sib txuas lus. Lub teeb zoo ib yam tsis muaj qhov sib txuam, nrog nws cov nthwv dej nthuav tawm cov theem random thiab cov lus qhia.

Yuav ua li cas Laser Teeb yog tsim

Cov txheej txheem ntawm laser tiam yog raws li lub hauv paus ntsiab lus ntawm stimulated emission. Nws suav nrog cov kauj ruam hauv qab no:

1. Zog Excitation: Atoms los yog molecules nyob rau hauv ib tug laser nruab nrab (xws li roj, khoom, los yog semiconductor) nqus sab nraud zog, hloov electrons mus rau lub zog siab dua.

2. Population Inversion: Ib qho xwm txheej tau ua tiav qhov twg ntau qhov muaj nyob hauv lub xeev zoo siab dua li hauv lub xeev qis zog, tsim kom muaj kev cuam tshuam rau pej xeem - qhov tseem ceeb ntawm kev ua haujlwm laser.

3. Stimulated Emission: Thaum lub atom zoo siab ntsib ib qho photon tuaj ntawm ib lub wavelength tshwj xeeb, nws tso tawm ib qho photon zoo tib yam, ua kom lub teeb.

4. Optical Resonance thiab Amplification: Cov emission photons muaj kev cuam tshuam nyob rau hauv ib qho kev kho qhov muag resonator (ib khub ntawm daim iav), tsis tu ncua amplifying li ntau photons yog stimulated.

5. Laser Beam tso zis: Thaum lub zog nce mus txog qhov tseem ceeb, ib qho kev sib koom ua ke, cov teeb pom kev zoo ntawm lub laser yog tawm los ntawm ib feem ntawm daim iav, npaj rau daim ntawv thov. Raws li lasers ua haujlwm ntawm qhov kub thiab txias, kev sib xyaw ua ke industrial chiller  pab tswj qhov kub thiab txias, ua kom muaj kev ua haujlwm zoo ib yam ntawm laser thiab txuas cov cuab yeej siv lub neej.

Hauv kev xaus, lub teeb laser sawv sib nrug ntawm lub teeb zoo tib yam vim nws cov khoom tshwj xeeb: monochromaticity, siab zog ceev, zoo heev directionality, thiab coherence. Cov txheej txheem meej ntawm laser tiam ua rau nws siv dav hauv kev txiav-ntug xws li kev lag luam, kev phais kho mob, thiab kev sib txuas lus kho qhov muag. Txhawm rau txhim kho laser system efficiency thiab lub neej ntev, kev siv cov dej chiller txhim khu kev qha yog qhov tseem ceeb hauv kev tswj cov thermal stability.