Txoj kev loj hlob ntawmlaser kab nqaim
Qhov kev hloov pauv ntawm hom kev tawm tswv yim laser hauv cov laser kab dav nqaim yog qhov kev hloov pauv ntawm cov qauv laser resonant cavity. Hauv qab no, peb yuav qhia ntau yam kev teeb tsa ntawm cov thev naus laus zis laser kab dav nqaim raws li kev hloov pauv ntawm cov laser resonators.
1. Kev teeb tsa lub qhov tseem ceeb ib zaug. Hom laser no tuaj yeem muab faib ua kab kab (kev teeb tsa qub, cov qauv yooj yim thiab ua haujlwm tau zoo) thiab kab kab annular (kev kov yeej qhov chaw hlawv thiab siv cov nthwv dej mus ncig). Lub nplhaib resonator tsis yog planar (NPRO) tau hais tshwj xeeb hauv lub nplhaib resonator, uas yog lub teb nthwv dej mus ncig tshwj xeeb thiab ruaj khov heev.laserLos ntawm qhov pom ntawm qhov ntev ntawm qhov, nws tuaj yeem faib ua cov qhov luv luv (yooj yim los siv ib hom SLM ntev, tab sis nrog cov kab dav dav thiab suab nrov siab) thiab cov qhov ntev (inherentlytxoj kab nqaim, tab sis kev siv SLM kev ua haujlwm yog qhov nyuaj ntawm kev siv tshuab).
2. Kev teeb tsa ib qho kev tawm tswv yim sab nraud. Kev teeb tsa no yog npaj los daws cov teeb meem ntawm lub sijhawm luv luv ntawm kev sib cuam tshuam photon thiab kev tshem tawm qhov nyuaj ntawm kev tso tawm tsis tau npaj tseg hauv ib qho chaw tseem ceeb, los ntawm kev lim thiab pub rov qab photons los ntawm qhov chaw sab nraud kom nias qhov dav ntawm kab. Cov qauv qub thaum ntxov suav nrog Littrow thiab Littman Metcalf hom qhov chaw sab nraud siv cov gratings. Qhov nyuaj ntawm kev teeb tsa no yog nyob rau hauv theem sib phim ntawm qhov chaw tseem ceeb thiab qhov chaw sab nraud.
3. Ob qhov kev teeb tsa tseem ceeb uas sib xyaw ua ke raws li Bragg gratings:
DFB laserkev teeb tsa: Kev sib xyaw ua ke ntawm Bragg cov qauv nrog thaj chaw nquag thiab kev qhia txog thaj chaw hloov pauv theem, nws muaj kev sib koom ua ke siab dua, kev ruaj khov thiab kev siv tau zoo, thiab txhim kho qhov wavelength drift ntawm DBR. Qhov nyuaj ntawm kev siv tshuab yog nyob rau hauv kev ua cov grating (xws li cov txheej txheem epitaxial RGF-DFB thib ob thiab cov txheej txheem etching SG-DFB ntawm semiconductor DFB).
DBR laser configuration: hloov cov iav ib txwm muaj nrog cov qauv Bragg passive periodic, uas muaj cov yam ntxwv lim dej thiab yooj yim rau kev siv SLM nrog cov qhov luv luv. Raws li qhov nce nruab nrab, nws tuaj yeem muab faib ua semiconductor DBR (nrog kev sib raug zoo ntawm cov txheej txheem) thiab fiber DBR (kev vam khom rau kev ua fiber thiab doping technology).
Yuav kom ua kom cov kab ntawm lub qhov luv luv ntawm lub qhov tseem ceeb (xws li DFB/DBR) nruj dua, yuav siv cov qauv ntawm lub qhov sab nraud sib xyaw ua ke. Cov qauv ntawm lub qhov sab nraud tau hloov zuj zus nrog kev txhim kho thev naus laus zis:
Qhov chaw sab nraud qhov: cov ntaub ntawv tseem ceeb thaum ntxov, suav nrog grating (Littrow / Littman) thiab ntau yam lim dej kho qhov muag (xws li FP tus qauv).
Cov kab hluav taws xob sab nraud fiber optic: siv txhua yam khoom siv fiber optic (xws li cov voj voog fiber optic, FBGs, fiber optic FP kab, thiab lwm yam), kev koom ua ke thiab kev tiv thaiv kev cuam tshuam muaj zog dua.
Qhov chaw sab nraud ntawm lub waveguide: Kev ua cov micro nano raws li cov ntaub ntawv semiconductor xws li Si thiab Si3N4, ua rau lub kaw lus me dua thiab ruaj khov.
Thaum kawg, tsab xov xwm no qhia txog kev teeb tsa ntawm optoelectronic oscillating lasers, uas yog ib daim ntawv tshwj xeeb ntawm kev tawm tswv yim, xws li PDH zaus stabilization technology. Los ntawm kev siv hluav taws xob tsis zoo tawm tswv yim los xauv lub zaus laser rau qhov chaw ruaj khov heev, kev ruaj khov zaus siab heev tuaj yeem ua tiav. Txawm li cas los xij, lub kaw lus yog qhov nyuaj, kim heev, thiab qhov yooj yim ntawm wavelength yog txwv.
Lub sijhawm tshaj tawm: Plaub Hlis-14-2026