Kev xaiv qhov chaw zoo tshaj plaws ntawm laser: ntug emission semiconductor laser Tshooj Ib

Kev xaiv qhov zoo tagnrhoqhov chaw laserTom ntej: Laser Semiconductor Emission
1. Kev Taw Qhia
Lub tshuab hluav taws xob semiconductorCov chips raug muab faib ua cov edge emitting laser chips (EEL) thiab vertical cavity surface emitting laser chips (VCSEL) raws li cov txheej txheem tsim khoom sib txawv ntawm cov resonators, thiab lawv cov qauv sib txawv tau pom hauv Daim Duab 1. Piv nrog vertical cavity surface emitting laser, edge emitting semiconductor laser technology kev loj hlob yog mature dua, nrog rau ntau qhov wavelength, siabhluav taws xob-opticalKev hloov pauv zoo, lub zog loj thiab lwm yam zoo, tsim nyog heev rau kev ua laser, kev sib txuas lus optical thiab lwm yam teb. Tam sim no, cov lasers semiconductor edge-emitting yog ib feem tseem ceeb ntawm kev lag luam optoelectronics, thiab lawv cov ntawv thov tau npog kev lag luam, kev sib txuas lus, kev tshawb fawb, cov neeg siv khoom, tub rog thiab aerospace. Nrog rau kev txhim kho thiab kev nce qib ntawm thev naus laus zis, lub zog, kev ntseeg siab thiab kev hloov pauv zog ntawm cov lasers semiconductor edge-emitting tau zoo dua qub, thiab lawv cov kev cia siab rau daim ntawv thov tau ntau dua thiab dav dua.
Tom ntej no, kuv yuav coj koj mus rau qhov txaus siab ntxiv rau qhov tshwj xeeb ntawm kev tso tawm sabcov laser semiconductor.

Daim Duab 1 (sab laug) lub tshuab hluav taws xob semiconductor laser thiab (sab xis) daim duab qhia txog cov qauv ntawm lub tshuab hluav taws xob laser ntsug

2. Txoj cai ua haujlwm ntawm ntug emission semiconductorlaser
Cov qauv ntawm ntug-emitting semiconductor laser tuaj yeem muab faib ua peb ntu hauv qab no: semiconductor active cheeb tsam, twj tso kua mis qhov chaw thiab optical resonator. Txawv ntawm cov resonators ntawm ntsug cavity surface-emitting lasers (uas yog tsim los ntawm sab saum toj thiab hauv qab Bragg iav), cov resonators hauv ntug-emitting semiconductor laser li feem ntau yog tsim los ntawm cov yeeb yaj kiab optical ntawm ob sab. Cov qauv EEL ntaus ntawv thiab cov qauv resonator tau qhia hauv Daim Duab 2. Lub photon hauv ntug-emission semiconductor laser li yog amplified los ntawm kev xaiv hom hauv resonator, thiab lub laser yog tsim nyob rau hauv qhov kev taw qhia sib luag rau qhov chaw substrate. Ntug-emitting semiconductor laser li muaj ntau yam kev ua haujlwm wavelengths thiab yog tsim rau ntau yam kev siv tswv yim, yog li lawv dhau los ua ib qho ntawm cov chaw laser zoo tagnrho.

Cov ntsuas kev ua tau zoo ntawm cov lasers semiconductor uas ci ntsa iab kuj sib xws nrog lwm cov lasers semiconductor, suav nrog: (1) laser lasing wavelength; (2) Threshold current Ith, uas yog, qhov tam sim no uas lub laser diode pib tsim laser oscillation; (3) Ua haujlwm tam sim no Iop, uas yog, qhov tam sim no tsav tsheb thaum lub laser diode mus txog qhov tso zis hluav taws xob, qhov parameter no siv rau kev tsim thiab kev hloov kho ntawm lub laser tsav circuit; (4) Kev ua haujlwm ntawm qhov nqes hav; (5) Lub kaum sab xis divergence θ⊥; (6) Lub kaum sab xis divergence θ∥; (7) Saib xyuas qhov tam sim no Im, uas yog, qhov loj me tam sim no ntawm lub semiconductor laser chip ntawm qhov tso zis hluav taws xob.

3. Kev tshawb fawb txog kev nce qib ntawm GaAs thiab GaN raws li ntug emitting semiconductor lasers
Lub semiconductor laser raws li GaAs semiconductor khoom yog ib qho ntawm cov thev naus laus zis semiconductor laser laus tshaj plaws. Tam sim no, GAAS-raws li ze-infrared band (760-1060 nm) ntug-emitting semiconductor lasers tau siv dav hauv kev lag luam. Raws li tiam thib peb semiconductor khoom tom qab Si thiab GaAs, GaN tau txais kev txhawj xeeb dav hauv kev tshawb fawb thiab kev lag luam vim nws cov khoom zoo heev thiab tshuaj lom neeg. Nrog rau kev txhim kho ntawm GAN-raws li optoelectronic khoom siv thiab kev siv zog ntawm cov kws tshawb fawb, GAN-raws li lub teeb-emitting diodes thiab ntug-emitting lasers tau industrialized.