Laser dynamics inoreva kushanduka kwehumwe huwandu hwema lasers nekufamba kwenguva, senge optical simba uye kuwana.

Maitiro ane simba eiyo laser anotarirwa nekudyidzana pakati penzvimbo yemaziso mugomba uye kuwana svikiro. Kazhinji, simba relaser richasiyana nemusiyano uripo pakati pekuwana uye resonant mhango, uye chiyero chekuchinja kwemubairo unotarwa nemaitiro ekusimudzwa ekubudisa uye nekungoerekana abuda (inogona zvakare kutsanangurwa nekudzima mhedzisiro uye nzira yekufambisa simba).

Mamwe mafungidziro chaiwo anoshandiswa. Semuenzaniso, iyo laser kuwana haina kunyanya kukwira. Mune inoenderera mwenje laser, hukama pakati pesimba relaser P uye kuwana coefficient g mumhango inogutsa zvinotevera coupling differential equation:

Kupi T_R inguva inodiwa kune imwe rwendo rwekutenderera mugomba, l ndiko kurasikirwa kwegomba, g_ss ndiyo diki chiratidzo kuwana (pakupihwa simba repombi), τ_g ndiyo nguva yekuzorora yekuwana (kazhinji iri pedyo nepamusoro pesimba rehupenyu hupenyu hwose), uye E_sat ndizvo takazadza simba rekunyudza rekuwana medium.

Mune inoenderera mberi wave lasers, anonyanya kunetseka masimba maitiro ekuchinja kwelaser (kazhinji anosanganisira kuumbwa kwekubuda kwesimba spikes) uye mamiriro ekushanda kana paine nyonganiso mukuita basa (kazhinji kuzorodza oscillation). Muzvinhu izvi, mhando dzakasiyana dze lasers dzine maitiro akasiyana kwazvo.

Semuenzaniso, doped insulator lasers inotarirwa kune spikes uye kuzorora oscillations, asi laser diodes haisi. Mune Q-switched laser, maitiro ane simba anokosha zvikuru, apo simba rakachengetwa mukuwana svikiro rinoshanduka zvikuru kana pulse yabudiswa. Q-switched fiber lasers inowanzova yakakwira zvakanyanya, uye kune zvimwe zvine simba zviitiko. Iyo inowanzo konzera iyo pulse kuve nezvimwe zvimiro mudura renguva, izvo zvinogona kwete kutsanangurwa neiyo equation iri pamusoro.

Iyo yakafanana equation inogona zvakare kushandiswa kune passive mode-yakakiyiwa lasers; ipapo equation yekutanga inoda kuwedzera imwe izwi kutsanangura kurasikirwa kweiyo saturable absorber. Mhedzisiro yeichi chiitiko ndechekuti attenuation yekuzorodza oscillation yakaderedzwa. Iyo yekuzorodza oscillation maitiro haatomboremekedze, saka yakatsiga-mamiriro mhinduro haichagadzikane, uye laser ine.vamwe kusagadzikana ye Q-switched mode-locking kana mamwe marudzi eQ-switching.