Lub "lub plawv" ntawm lub laser: qhov nruab nrab nce

Lub "lub plawv" ntawm lub laser: gainmedium
In kev siv tshuab laser, tuslaser nce qib nruab nrab(tseem hu ua cov khoom siv nruab nrab lossis cov tshuaj ua haujlwm laser) yog cov khoom tseem ceeb ntawmlaserNws ua tiav qhov tig rov qab ntawm cov lej me me los ntawm kev twj, muab lub peev xwm rau kev ua kom lub teeb ci ntsa iab, them rau qhov poob hauv qhov resonant cavity, thiab yog li tsim cov zis laser sib xws. Yog tsis muaj qhov nruab nrab nce ntxiv, yuav tsis muaj laser zoo.
1. Lub tswv yim yooj yim thiab txoj cai ua haujlwm ntawm kev nce qib xov xwm.
Lub luag haujlwm ntawm cov khoom siv hluav taws xob nce yog ua kom lub zog pom kev loj hlob los ntawm kev tso tawm. Feem ntau, kev nqus dej sab nraud (kev nqus dej pom kev lossis kev nqus hluav taws xob) yog qhov xav tau los muab lub zog kom ua tiav kev hloov pauv zog ntawm cov khoom sab saud.
2. Cov kev cai rau cov xov xwm zoo heev:
Tsis yog txhua yam khoom siv tuaj yeem siv ua cov khoom siv tau. Cov kev cai tseem ceeb: Kev hloov pauv laser: Muaj qhov muaj zog ntawm qhov seem (o_em) hauv qhov ntau ntawm qhov ntev ntawm lub hom phiaj. Kev pom tseeb siab: Cov khoom siv hauv tsev yog pob tshab rau lub laser thiab lub twj tso kua mis wavelengths. Kev nqus dej twj tso kua mis zoo: Kev sib phim qhov chaw twj tso kua mis muaj (xws li 808 nm LD pumping Nd: YAG) yog qhov tsim nyog rau lub neej siab dua (T): Lub neej ntev yog qhov zoo rau Q-switching, lub neej luv yog qhov zoo rau kev hloov kho. Kev ua haujlwm siab quantum: Kev quenching qis, kev nqus dej siab. Cov khoom o·T siab: Ua tiav qhov nce siab thiab qhov qis qis. Bandwidth dav dav: Zoo rau kev kho qhov ntev thiab ultrashort pulses. Cov khoom siv thermal thiab mechanical: Kev ua haujlwm thermal siab, coefficient thermo-optic qis, qhov kev puas tsuaj siab. Lwm tus: Kev ruaj khov tshuaj lom neeg, tsis muaj hygroscopicity, qhov kev puas tsuaj siab. Cov kev cai no feem ntau tsis sib haum xeeb nrog ib leeg. Piv txwv li, qhov bandwidth dav feem ntau txhais tau tias qhov seem qis dua, thiab qhov no xav tau kev lag luam hauv cov xwm txheej thov.
Qhov nruab nrab ntawm qhov nce yog qhov txiav txim siab raukev ua tau zoo ntawm laserTxij li cov Nd: YAG qub mus rau cov fibers optical niaj hnub no, kev nce qib hauv cov ntaub ntawv tau nthuav dav cov ntawv thov ntawm lasers. Hauv kev tsim qauv, kev sim ua lej feem ntau yuav tsum tau ua kom zoo dua cov tshuaj doping, cov txheej txheem twj tso kua mis, thiab lwm yam.