Ua ntej, qhov me me nyob rau hauv lub xeev muaj hluav taws xob siab ceev ceev tau hloov mus rau lub xeev qis zog, uas yog hu ua nthawv siab;
Thib ob, qhov kev faib tawm hauv lub xeev muaj hluav taws xob hloov pauv mus rau lub xeev cov hluav taws xob tsawg hauv qab kev zam ntawm cov teeb ci sab nraud, uas yog hu ua hluav taws xob tiv thaiv;
Qhov thib peb, lub zog ntawm lub zog hluav taws xob tsawg tsawg nqus tawm lub teeb sab nraud mus rau lub zog siab lub xeev tau hu ua kev nqus.
Txawj tawg, txawm yog ob tug hais txoj kev hloov los ntawm ib tug siab zog lub xeev mus rau ib tug tsis muaj zog lub xeev nyob rau tib lub sij hawm, cov theem, polarization lub xeev, thiab emission kev taw qhia ntawm cov tawm txim liab teeb tej zaum yuav sib txawv, tab sis cov tsa tawg yog sib txawv, thaum tus hais hauv cov hluav taws xob muaj zog siab yog sab nraud. Raws li qhov kev cia siab ntawm photons, nws hloov mus rau lub xeev qis-zog, ua lub teeb ci uas zoo ib yam rau cov duab yees sab nraud nyob rau hauv cov ntawv ntawm zaus, theem, thiab lub xeev polarization. Nyob rau hauv ib tug laser, cov tawg uas tshwm sim yog tsa tawg, thiab cov laser nws emits yog raws nraim tib yam nyob rau hauv cov nqe lus ntawm zaus, theem, thiab polarization lub xeev. Tej pog teeb system,
Uas yog, muaj yog tsa tawg thiab tsa haum. Tsuas yog tus tsa tawg yog hom, thiab lwm lub teeb yuav tsum amplified rau emit laser lub teeb. Hauv cov khoom siv hluav taws xob dav dav, qhov kev nqus tawm sai sai yog qhov tseem ceeb, thiab tsuas yog qhov sib npaug ntawm lub xeev ntawm qhov me me thiaj tawg, yog li cov xov tooj ntawm cov hluav taws xob hauv lub xeev muaj zog yog qhov loj dua li ntawm cov khoom hauv cov hluav taws xob tsawg hauv lub xeev (thiaj li hu ua ion tus naj npawb inversion), thiab lub laser tuaj yeem tawm.