Cov yam ntxwv tseem ceeb ntawm laser nce nruab nrab

Dab tsi yog cov yam ntxwv tseem ceeb ntawm laser nce media?

Laser nce nruab nrab, tseem hu ua laser ua hauj lwm yam khoom, yog hais txog cov khoom siv los ua kom tau cov pej xeem particle inversion thiab tsim hluav taws xob txhawb kom ua tiav lub teeb amplification. Nws yog cov tseem ceeb ntawm lub laser, nqa ib tug loj tus naj npawb ntawm atoms los yog molecules, cov atoms los yog molecules nyob rau hauv lub excitation ntawm sab nraud lub zog, muaj peev xwm hloov mus rau lub zoo siab lub xeev, thiab los ntawm lub zoo siab hluav taws xob tso tawm photons, yog li tsim ib tug excitation.laser teeb. Lub laser nce nruab nrab tuaj yeem yog cov khoom, kua, roj lossis cov khoom siv semiconductor.
Nyob rau hauv cov khoom siv hauv lub xeev lasers, cov khoom siv feem ntau siv yog cov khoom siv lead ua uas tsis tshua muaj lub ntiaj teb ions lossis cov hlau hloov pauv, xws li Nd: YAG crystals, Nd: YVO4 crystals, thiab lwm yam. Hauv cov kua lasers, cov organic dyes feem ntau siv los ua kev tshaj tawm. Gas lasers siv roj ua qhov nruab nrab nce, xws li cov pa roj carbon dioxide hauv carbon dioxide lasers, thiab helium thiab neon roj hauv helium-neon lasers.Semiconductor laserssiv cov khoom siv semiconductor ua qhov nruab nrab nce, xws li gallium arsenide (GaAs).
Cov yam ntxwv tseem ceeb ntawm laser nce nruab nrab muaj xws li:
Lub zog theem qauv: Cov atoms lossis molecules hauv qhov nce nruab nrab yuav tsum muaj cov qauv tsim hluav taws xob tsim nyog thiaj li ua tiav cov pej xeem rov qab los ntawm kev ua kom lub zog sab nraud. Qhov no feem ntau txhais tau hais tias lub zog sib txawv ntawm cov qib siab dua thiab qis zog yuav tsum tau ua kom haum rau lub zog photon ntawm ib qho kev wavelength.

Cov khoom hloov pauv: Atoms lossis molecules hauv cov xeev zoo siab yuav tsum muaj cov khoom hloov pauv ruaj khov thiaj li yuav tso tawm cov photons coherent thaum lub zog tawg. Qhov no yuav tsum tau nce nruab nrab kom muaj kev ua haujlwm siab quantum thiab poob qis.
Thermal stability thiab mechanical zog: Hauv kev siv cov tswv yim, qhov nce nruab nrab yuav tsum tau tiv taus lub zog siab twj tso kua mis lub teeb thiab laser tso zis, yog li nws yuav tsum muaj thermal stability thiab mechanical zog.
Optical zoo: Qhov zoo ntawm qhov nruab nrab qhov nruab nrab yog qhov tseem ceeb rau kev ua haujlwm ntawm lub laser. Nws yuav tsum muaj lub teeb xa hluav taws xob siab thiab tsis tshua muaj tawg tawg kom ntseeg tau tias qhov zoo thiab ruaj khov ntawm lub teeb laser. Kev xaiv ntawm laser nce nruab nrab yog nyob ntawm daim ntawv thov yuav tsum tau ntawm lublaser, ua haujlwm wavelength, tso zis zog thiab lwm yam. Los ntawm optimizing cov khoom thiab cov qauv ntawm qhov nce nruab nrab, qhov kev ua tau zoo thiab kev ua haujlwm ntawm lub laser tuaj yeem txhim kho ntxiv.