Kev nthuav qhia laser semiconductor
Lub tshuab hluav taws xob semiconductor, tseem hu ua lub laser diode, yog lub laser uas siv cov khoom siv semiconductor ua cov khoom ua haujlwm. Vim tias qhov sib txawv ntawm cov khoom qauv, cov txheej txheem tshwj xeeb rau kev tsim cov lasers ntawm ntau hom yog qhov tshwj xeeb. Cov ntaub ntawv ua haujlwm muaj xws li gallium arsenide (GaAs), cadmium sulfide (CdS), indium phosphide (InP), thiab zinc sulfide (ZnS). Cov txheej txheem kev cais yog peb daim ntawv: kev txhaj hluav taws xob, kev sib txuas ntawm lub teeb hluav taws xob thiab qhov nqus tawm kho qhov muag. Lub tshuab hluav taws xob semiconductor tuaj yeem muab faib ua homojunction, ib qho kev ua haujlwm sib txuas, thiab ob leeg txuas ntxiv. Homogeneous kev sib tshuam lasers thiab ib qho kev sib txuas ntawm cov lasers feem ntau muaj cov cuab yeej ua hluav taws xob nyob ntawm chav sov, thaum ob chav heterojunction lasers tuaj yeem ua haujlwm tsis tu ncua ntawm chav sov.
Semiconductor diode lasers yog cov ua haujlwm tsim nyog thiab tseem ceeb tshaj plaws ntawm cov lasers. Nws qhov loj me, lub neej ntev, thiab kev txhaj tshuaj yooj yim tam sim no los txhawm rau nws qhov kev ua haujlwm voltage thiab tam sim no tau tshaj rau cov kev sib txuas ua ke, yog li nws tuaj yeem ua ke nrog nws. Nws tseem ua tau ncaj qha ua qhov kev hloov kho tam sim no nrog rau kev tso ua ke mus txog GHz kom tau txais laser tawm ntawm qhov kev hloov siab ceev. Vim tias cov kev zoo no, semiconductor diode lasers tau siv dav hauv kev sib txuas lus laser, chaw cia khoom, optical gyro, laser luam tawm, ntu, thiab radar.