Lub hauv paus ntsiab lus ntawm Tunable semiconductor laser (Tunable laser)

Tuning txoj cai ntawmTunable semiconductor laser(Tunable laser)

Tunable semiconductor laser yog ib hom laser uas tuaj yeem hloov pauv lub wavelength ntawm laser tso zis nyob rau hauv ib tug tej yam ntau yam. Tunable semiconductor laser txais thermal tuning, hluav taws xob tuning thiab mechanical tuning los kho cov kab noj hniav ntev, grating reflection spectrum, theem thiab lwm yam hloov pauv kom ua tiav wavelength tuning. Hom laser no muaj ntau yam kev siv hauv kev sib txuas lus kho qhov muag, spectroscopy, sensing, kho mob thiab lwm yam. Daim duab 1 qhia cov ntsiab lus tseem ceeb ntawm atunable laser, suav nrog lub teeb pom kev zoo, FP kab noj hniav tsim los ntawm cov iav pem hauv ntej thiab nram qab, thiab chav tsev kho qhov muag xaiv lim. Thaum kawg, los ntawm kev kho qhov ntev ntawm qhov kev xav txog kab noj hniav, cov lim hom optical tuaj yeem ncav cuag qhov kev xaiv wavelength.

FIG.1

Tuning txoj kev thiab nws derivation

Lub hauv paus ntsiab lus ntawm tunablesemiconductor lasersFeem ntau yog nyob ntawm kev hloov lub cev tsis zoo ntawm lub laser resonator kom ua tiav kev hloov pauv tsis tu ncua lossis tsis sib xws hauv cov zis laser wavelength. Cov kev txwv no suav nrog, tab sis tsis txwv rau, qhov ntsuas qhov ntsuas tsis pom, kab noj hniav ntev, thiab xaiv hom. Cov nram qab no qhia txog ntau txoj hauv kev kho thiab lawv cov hauv paus ntsiab lus:

1. Carrier txhaj tshuaj tuning

Carrier txhaj tshuaj tuning yog hloov lub refractive Performance index ntawm cov khoom los ntawm kev hloov lub tam sim no txhaj mus rau hauv lub active cheeb tsam ntawm lub semiconductor laser, thiaj li mus cuag wavelength tuning. Thaum qhov tam sim no nce, cov cab kuj concentration nyob rau hauv lub active cheeb tsam nce, uas ua rau ib tug hloov nyob rau hauv refractive index, uas nyob rau hauv lem cuam tshuam lub laser wavelength.

2. Thermal tuning Thermal tuning yog hloov lub refractive index thiab kab noj hniav ntev ntawm cov khoom los ntawm kev hloov cov kev khiav hauj lwm kub ntawm lub laser, thiaj li mus cuag wavelength tuning. Kev hloov pauv ntawm qhov kub thiab txias cuam tshuam rau qhov ntsuas qhov ntsuas qhov ntsuas thiab lub cev qhov loj ntawm cov khoom.

3. Mechanical tuning Mechanical tuning yog ua kom tiav wavelength tuning los ntawm kev hloov txoj hauj lwm los yog lub kaum sab xis ntawm sab nraud optical ntsiab ntawm lub laser. Cov txheej txheem kev kho tshuab feem ntau suav nrog hloov lub kaum sab xis ntawm qhov sib txawv ntawm qhov sib txawv thiab txav txoj haujlwm ntawm daim iav.

4 Electro-optical tuning Electro-optical tuning yog ua tiav los ntawm kev siv lub teb hluav taws xob rau cov khoom siv semiconductor los hloov qhov ntsuas qhov cuam tshuam ntawm cov khoom, yog li ua tiav qhov kev sib tw wavelength. Txoj kev no feem ntau siv hauvelectro-optical modulators (EOM) thiab electro-optically tuned lasers.

Hauv cov ntsiab lus, lub hauv paus ntsiab lus ntawm tunable semiconductor laser feem ntau paub txog kev hloov kho wavelength los ntawm kev hloov lub cev tsis zoo ntawm lub resonator. Cov kev ntsuas no suav nrog qhov ntsuas qhov ntsuas tsis pom, kab noj hniav ntev, thiab xaiv hom. Cov txheej txheem tuning tshwj xeeb suav nrog kev siv tshuaj tua kab mob, kev kho cua sov, kho tshuab tuning thiab electro-optical tuning. Txhua txoj kev muaj nws tus kheej tshwj xeeb lub cev mechanism thiab lej derivation, thiab kev xaiv ntawm txoj kev kho kom haum yuav tsum tau txiav txim siab raws li cov kev thov tshwj xeeb, xws li kev sib tw, tuning ceev, kev daws teeb meem thiab kev ruaj ntseg.