Kev ua haujlwm ntawm optical fiber spectrometer

Optical fiber ntau spectrometers feem ntau siv fiber ntau optical ua lub teeb liab txuas, uas yuav yog photometric txuas mus rau spectrometer rau kev tsom xam spectral.Vim qhov yooj yim ntawm fiber ntau kho qhov muag, cov neeg siv tuaj yeem hloov kho tau yooj yim los tsim kom tau txais cov kab ke spectrum.

Qhov zoo ntawm fiber ntau optic spectrometers yog qhov modularity thiab yooj ntawm kev ntsuas qhov system.Lub microoptical fiber ntau spectrometerlos ntawm MUT hauv lub teb chaws Yelemees yog ceev heev uas nws tuaj yeem siv rau kev txheeb xyuas online.Thiab vim yog kev siv cov cuab yeej siv hluav taws xob uas tsis tshua muaj nqi, tus nqi ntawm cov spectrometer raug txo, thiab yog li tus nqi ntawm tag nrho cov ntsuas ntsuas tau txo.

Qhov yooj yim configuration ntawm lub fiber optic spectrometer muaj ib tug grating, ib tug slit, thiab ib tug detector.Cov kev txwv ntawm cov khoom no yuav tsum tau teev tseg thaum yuav khoom spectrometer.Qhov kev ua tau zoo ntawm lub spectrometer nyob ntawm qhov sib xyaw ua ke thiab kev ntsuas cov khoom ntawm cov khoom no, tom qab ntsuas qhov ntsuas qhov ntsuas qhov ntsuas qhov ntsuas qhov ntsuas, hauv txoj cai, cov khoom siv no tsis tuaj yeem hloov pauv.

Kev taw qhia txog kev ua haujlwm

grating

Qhov kev xaiv ntawm grating nyob ntawm qhov spectral ntau thiab kev daws teeb meem.Rau fiber ntau optic spectrometers, spectral ntau yog feem ntau ntawm 200nm thiab 2500nm.Vim yog qhov yuav tsum tau muaj kev daws teeb meem siab, nws yog qhov nyuaj kom tau txais ntau yam spectral;Nyob rau tib lub sij hawm, qhov siab dua qhov yuav tsum tau daws, qhov tsawg luminous flux.Rau cov kev xav tau ntawm kev daws teeb meem qis dua thiab dav dav, 300 kab / hli grating yog qhov kev xaiv ib txwm muaj.Yog tias qhov kev daws teeb meem siab spectral xav tau, nws tuaj yeem ua tiav los ntawm kev xaiv lub grating nrog 3600 kab / hli, lossis xaiv lub ntsuas ntsuas nrog ntau pixel daws teeb meem.

hlais

Qhov nqaim slit tuaj yeem txhim kho qhov kev daws teeb meem, tab sis lub teeb flux me dua;Ntawm qhov tod tes, cov slits dav tuaj yeem ua rau muaj kev nkag siab zoo, tab sis ntawm qhov kev daws teeb meem.Hauv cov ntawv thov sib txawv, qhov dav dav qhov tsim nyog raug xaiv los ua kom zoo dua qhov kev xeem tag nrho.

soj ntsuam

Lub detector nyob rau hauv qee txoj kev txiav txim siab qhov kev daws teeb meem thiab rhiab heev ntawm fiber ntau optic spectrometer, lub teeb rhiab cheeb tsam ntawm lub detector yog nyob rau hauv txoj cai txwv, nws muab faib ua ntau me me pixels rau siab daws teeb meem los yog muab faib ua tsawg tab sis loj pixels rau siab rhiab heev.Feem ntau, qhov rhiab heev ntawm CCD ntes tau zoo dua, yog li koj tuaj yeem tau txais kev daws teeb meem zoo dua yam tsis muaj kev nkag siab rau qee qhov.Vim lub siab rhiab heev thiab thermal suab nrov ntawm InGaAs ntes nyob ze infrared, lub teeb liab-rau-suab nrov piv ntawm lub kaw lus tuaj yeem txhim kho tau zoo los ntawm kev siv tub yees.

Optical lim

Vim hais tias ntawm multistage diffraction nyhuv ntawm lub spectrum nws tus kheej, qhov cuam tshuam ntawm multistage diffraction yuav txo tau los ntawm kev siv lub lim.Tsis zoo li cov pa spectrometers, fiber ntau optic spectrometers yog coated rau ntawm lub ntes, thiab qhov no yuav tsum tau muab tso rau hauv qhov chaw ntawm lub Hoobkas.Nyob rau tib lub sijhawm, txheej txheej kuj tseem muaj cov haujlwm ntawm kev tiv thaiv kev cuam tshuam thiab txhim kho lub teeb liab-rau-suab nrov piv ntawm qhov system.

Kev ua tau zoo ntawm spectrometer feem ntau yog txiav txim siab los ntawm ntau yam spectral, kho qhov muag thiab rhiab heev.Ib qho kev hloov pauv rau ib qho ntawm cov kev txwv no feem ntau yuav cuam tshuam rau kev ua haujlwm ntawm lwm qhov kev txwv.

Qhov kev sib tw tseem ceeb ntawm lub spectrometer tsis yog kom ua kom tiav tag nrho cov kev txwv thaum lub sijhawm tsim khoom, tab sis ua kom cov kev ntsuas kev ntsuas ntawm spectrometer ua tau raws li qhov yuav tsum tau ua rau kev siv sib txawv hauv qhov kev xaiv qhov chaw peb sab.Lub tswv yim no ua rau lub spectrometer kom txaus siab rau cov neeg siv khoom kom rov qab tau siab tshaj plaws nrog kev nqis peev tsawg.Qhov luaj li cas ntawm lub voos xwmfab nyob ntawm cov txheej txheem kev ntsuas uas lub spectrometer xav tau kom ua tiav, thiab nws qhov loj me yog cuam tshuam nrog qhov nyuaj ntawm spectrometer thiab tus nqi ntawm cov khoom spectrometer.Spectrometer cov khoom yuav tsum tau ua raws li cov txheej txheem kev xav tau los ntawm cov neeg siv khoom.

Spectral ntau

Spectrometersnrog ib tug me me spectral ntau yam feem ntau muab cov ncauj lus kom ntxaws spectral cov ntaub ntawv, whereas loj spectral ranges muaj ib tug dav dav pom ntau yam.Yog li ntawd, lub spectral ntau yam ntawm spectrometer yog ib qho ntawm cov tsis tseem ceeb uas yuav tsum tau qhia meej meej.

Cov yam tseem ceeb uas cuam tshuam rau cov spectral ntau yog cov grating thiab ntes, thiab cov grating sib raug thiab ntes tau raug xaiv raws li qhov xav tau sib txawv.

rhiab heev

Hais txog rhiab heev, nws yog ib qho tseem ceeb kom paub qhov txawv ntawm rhiab heev nyob rau hauv photometry (qhov tsawg tshaj plaws teeb liab lub zog uas ibspectrometertuaj yeem ntes tau) thiab rhiab heev hauv stoichiometry (qhov sib txawv me tshaj plaws hauv kev nqus uas lub spectrometer tuaj yeem ntsuas tau).

ib.Photometric rhiab heev

Rau cov ntawv thov uas xav tau cov rhiab heev spectrometers, xws li fluorescence thiab Raman, peb pom zoo SEK thermo-cooled optical fiber spectrometers nrog thermo-txias 1024 pixel ob-dimensional array CCD detectors, nrog rau cov khoom ntes condensing lo ntsiab muag, tsom iav kub, thiab dav slits ( 100μm los yog dav dua).Cov qauv no tuaj yeem siv lub sijhawm sib koom ua ke ntev (los ntawm 7 milliseconds mus rau 15 feeb) txhawm rau txhim kho lub teeb liab lub zog, thiab tuaj yeem txo cov suab nrov thiab txhim kho ntau yam dynamic.

b.Stoichiometric rhiab heev

Txhawm rau txhawm rau txhawm rau txheeb xyuas ob qhov txiaj ntsig ntawm qhov nqus nqus nrog qhov muaj peev xwm ze heev, tsis yog tsuas yog yuav tsum muaj qhov rhiab heev ntawm tus ntes, tab sis kuj yuav tsum muaj qhov sib piv ntawm lub teeb liab-rau-lub suab nrov.Tus ntes nrog lub teeb liab siab tshaj plaws-rau-lub suab sib piv yog lub thermoelectric tub yees 1024-pixel ob-dimensional array CCD detector hauv SEK spectrometer nrog lub teeb liab-rau- suab nrov piv ntawm 1000: 1.Qhov nruab nrab ntawm ntau cov duab spectral kuj tuaj yeem txhim kho cov teeb liab-rau-suab nrov piv, thiab qhov nce ntawm tus lej nruab nrab yuav ua rau lub teeb liab-rau-suab nrov piv kom nce ntawm cov square hauv paus ceev, piv txwv li, qhov nruab nrab ntawm 100 zaug tuaj yeem ua tau. nce lub teeb liab-rau-lub suab piv 10 zaug, ncav cuag 10,000: 1.

Kev daws teeb meem

Kev daws teeb meem kho qhov muag yog qhov tseem ceeb rau kev ntsuas qhov muaj peev xwm kho qhov muag.Yog tias koj xav tau kev daws teeb meem kho qhov muag siab heev, peb xav kom koj xaiv qhov grating nrog 1200 kab / hli lossis ntau dua, nrog rau qhov nqaim nqaim thiab 2048 lossis 3648 pixel CCD ntes.