Kev loj hlob thiab kev ua lag luam ntawm tunable laser ib feem ob

Kev loj hlob thiab kev ua lag luam ntawm tunable laser (ib feem ob)

Ua haujlwm ua haujlwm ntawmtunle laser

Muaj cov kwv yees peb lub hauv paus ntsiab lus rau kev ua tiav laser wavelength tig. Ntau tshaj plawstunable lasersSiv cov khoom ua haujlwm nrog cov kab fluorescent. Cov resonators uas ua rau lub laser muaj qhov tsis tshua muaj kev poob qis tsuas yog hla ib txoj kev ntev heev. Yog li no, thawj zaug yog hloov lub wavelength ntawm lub wavelength los ntawm kev hloov lub wavelength sib xws rau thaj chaw qis ntawm ib qho kev sib tsoo ntawm ib co (xws li grating). Qhov thib ob yog hloov lub zog ntawm lub laser hloov los ntawm hloov qee qhov tsis sib xws (xws li sib nqus teb, ntsuas kub, thiab lwm yam). Qhov thib peb yog kev siv cov kev cuam tshuam ntawm nonlinerhear los ua kom tiav Raman kev hloov pauv, txhawb nqa Raman ua ob npaug, Optical parametric oscillation). Raug lasers teej tug rau thawj hom yog zas xim, chrysoberyr lasers, tunle-siab nkev roj tsheb thiab tunins rasers.

Tunle laser los ntawm qhov kev pom ntawm kev ua tau tiag tiag yog feem ntau muab faib ua: tam sim no tswj thev naus laus zis thiab tswj kev tswj tshuab.
Ntawm lawv, kev tswj hluav taws xob thev naus laus zis yog kom ua tiav txoj kev txhaj tshuaj, raws li cov zis hluav taws xob nrawm, feem ntau cov khoom siv hluav taws xob feem ntau sg-dbr (piv txwv li grating dbr) thiab GCSR Laser (ib leeg grating directional txuas rov qab-ntsuas kev xav tau). Qhov kub tswj tshuab hloov pauv cov zis tawm ntawm lub laser los ntawm kev hloov pauv cov cheeb tsam laser cov cheeb tsam laser. Cov thev naus laus zis yog yooj yim, tab sis qeeb, thiab tuaj yeem hloov kho nrog txoj kev nqaim nqaim dav ntawm tsuas yog ob peb nm. Cov tseem ceeb ntawm kev tswj qhov kub thiab txiasDfb laser(Muab faib tawm tswv yim) thiab DBR LASER (faib tawm BAGG xav tau). Neeg kho tshuab tswj tau yog raws mems (micro-electro-neeg siv tshuab) ua kom tiav kev xaiv ntawm cov wavelength, nrog cov khoom loj tuaj yeem kho tau lub zog. Cov qauv txheej txheem tseem ceeb raws li kev tswj tshuab yog DFB (faib cov lus teb) thiab vcelity laser) thiab vcahity nto qhib laser). Cov hauv qab no yog piav qhia los ntawm cov ntsiab lus ntawm tus txheej txheem ntawm tunable lasers.

Daim ntawv thov kev sib txuas lus kho qhov muag

Tunle laser yog qhov tseem ceeb Optoelectronic ntaus hauv ib tiam tshiab ntawm ntom wavelength system thiab photon txauv hauv txhua-kho kab ke. Nws daim ntawv thov nce siab heev qhov muaj peev xwm, hloov kho tau thiab muaj kev sib zog ntawm cov kab ke kho kua zaub, thiab tau pom qhov ntev txuas ntxiv lossis qis dua wavelength ntau yam.
Tuam txhab uas muag thiab cov chaw tshawb fawb thoob ntiaj teb tau tshaj tawm txoj kev tshawb fawb thiab kev txhim kho cov lasers, thiab kev nce qib tshiab tau ua tiav tas li hauv daim teb no. Cov kev ua tau ntawm tunable lasers tau txhim kho tas li thiab tus nqi yog tas li. Tam sim no, tunable lasers feem ntau muab faib ua ob pawg: semiconductor tunable lasers thiab tunable fiber ntau lasers.
Semiconductor laseryog qhov tseem ceeb lub teeb pom kev zoo nyob rau hauv kev sib txuas lus kho qhov muag, uas muaj kev txuag me me, ua kom muaj zog, thiab yooj yim kom ua tiav ib qho nti Optoelectronic sib xyaw nrog lwm cov khoom siv. Nws tuaj yeem muab faib ua cov lus qhia kev faib ua laser, faib cov iav laser, micromotor system ntsug kab noj hniav qhib laser thiab sab nraud kab ntawm laser.
Kev txhim kho ntawm lub taub cov fiber ntau laser li qhov nruab nrab thiab kev txhim kho ntawm cov kua mis laser laser tau tshaj tawm txoj kev txhim kho ntawm cov nyiaj lasers fiber ntau. Lub tunable laser yog raws li 80nm nce bandwidth ntawm doped fiber, thiab lub taub lim khoom yog ntxiv rau kev tswj cov yoj thiab kom paub lub wavelengthn.
Kev loj hlob ntawm tunable semiconductor laser yog qhov nquag tshaj plaws hauv ntiaj teb, thiab kev nce qib kuj yog sai heev. Raws li tunable lasers maj mam muab txoj kev ruaj khov cov nqi ntawm cov nqi sib txuas lus thiab ntau dua hauv cov tshuab sib txuas lus thiab ua lub luag haujlwm sib txuas lus yav tom ntej kho qhov muag.

Kev Tsim Nyog Txoj Kev Loj Hlob
Muaj ntau hom kev lag luam kom tunable, uas feem ntau tsim los ntawm kev qhia ntxiv ntau lub zog, thiab qee cov khoom lag luam tau muab rau hauv kev ua lag luam thoob ntiaj teb. Ntxiv nrog rau kev txhim kho qhov kho qhov muag tshiab lasers, xws li lub zog ua haujlwm nrog ib tus qauv sib xyaw nrog tus qauv gragg reflector Thiab ib semiconductor kho qhov muag tshaj plaws thiab cov hluav taws xob nqus cov khoom siv hluav taws xob.
Vim tias lub wavelength tunable laser tau dav siv, lub tuntion laser ntawm ntau yam qauv tuaj yeem siv rau cov kev sib txawv, thiab txhua yam muaj qhov zoo thiab qhov tsis zoo. Kev siv sab nraud semiconductor laser tuaj yeem siv ua cov twj ntsuas dav dav vim yog nws cov zis siab siab dua wavelength. Los ntawm qhov kev pom ntawm photon kev sib xyaw ua ke thiab ntsib lub neej yav tom ntej tag nrho cov kev sib tsoo dbr, superment teeb tsa ua ke thiab amplififiers ua ke thiab yog kev cia siab rau lub teeb pom kev rau Z.
Fiber ntau grating tune tune siv laser nrog sab nraud kab noj hniav yog tseem muaj cov qauv yooj yim, cov kab nqaim dav thiab yooj yim fiber ntau. Yog tias EA Modulator tuaj yeem sib xyaw rau hauv kab noj hniav, nws kuj tseem siv tau los ua qhov kev kub ceev tunins optical soliton. Tsis tas li ntawd, cov taub fiber ntau las raws li cov lasers fiber ntau tau ua ntau yam kev nce qib hauv xyoo tsis ntev los no. Nws tuaj yeem cia siab tias kev ua haujlwm ntawm kev tunable lasers hauv kev sib txuas lus teeb pom kev zoo, thiab kev lag luam nce ntxiv, muaj kev thov ci ci heev.