Semiconductor lasers, kuj hu ua laser diodes
Nws yog lub laser siv khoom siv semiconductor los ua cov khoom ua haujlwm. Vim tias qhov sib txawv ntawm cov qauv ntawm cov ntaub ntawv, cov txheej txheem tshwj xeeb rau kev ua ntau hom lasers yog qhov tshwj xeeb heev. Cov ntaub ntawv siv ua haujlwm xws li gallium arsenide (GaAs), cadmium sulfide (CdS), indium phosphide (InP), thiab zinc sulfide (ZnS). Lub excitation hom xws li hluav taws xob txhaj tshuaj, electron nqaj excitation, thiab kho qhov muag siv. Cov khoom siv thev naus laus zis tuaj yeem ua qhov homojunctions, heterojunctions ib zaug, thiab ob zaug txuas ntxiv heterojunctions. Lub homojunction laser thiab ib qho heterojunction laser feem ntau muaj cuab yeej ua hluav taws xob nyob ntawm chav tsev kub, thaum ob chav heterojunction laser tuaj yeem ua tiav kev ua haujlwm ntawm chav tsev kub.
Semiconductor diode lasers yog cov ua haujlwm tsim nyog thiab tseem ceeb tshaj plaws ntawm cov lasers. Nws yog me me hauv qhov loj me, ntev hauv lub neej, thiab tuaj yeem nqus tau nrog txhaj yooj yim tam sim no. Nws ua hauj lwm voltage thiab tam sim no tau tshaj rau qhov sib xyaw ua ke thiab yog li tuaj yeem monolithically nrog nws. Nws tseem muaj peev xwm ua tau ncaj qha ua cov kev hloov kho tam sim no nrog rau zaus ntawm txog GHz kom tau txais lub siab ceev cov qauv hluav taws xob tso zis. Vim tias cov kev zoo no, semiconductor diode lasers tau siv dav hauv kev sib txuas lus laser, chaw cia khoom, kho qhov muag, kho qhov muag, laser luam tawm, ntu, thiab radar.