Cov khoom siv fiber ntau optical feem ntau siv cov fiber ntau optical ua lub teeb liab coupler, uas yuav raug txuas nrog lub spectrometer rau kev tshuaj xyuas spectral. Vim yog qhov yooj yim ntawm cov fiber ntau optical, cov neeg siv tuaj yeem yooj yim heev los tsim lub kaw lus spectrum acquisition.
Qhov zoo ntawm cov fiber optic spectrometers yog qhov modularity thiab kev ywj pheej ntawm lub kaw lus ntsuas. Lub microlub tshuab ntsuas fiber ntaulos ntawm MUT hauv lub teb chaws Yelemees yog ceev heev uas nws tuaj yeem siv rau kev tshuaj xyuas online. Thiab vim yog kev siv cov khoom siv pheej yig universal detectors, tus nqi ntawm lub spectrometer raug txo, thiab yog li tus nqi ntawm tag nrho cov txheej txheem ntsuas raug txo.
Cov qauv yooj yim ntawm cov fiber optic spectrometer muaj xws li grating, slit, thiab detector. Cov kev cai ntawm cov khoom no yuav tsum tau teev tseg thaum yuav spectrometer. Kev ua tau zoo ntawm cov spectrometer nyob ntawm qhov kev sib xyaw ua ke thiab kev kho kom raug ntawm cov khoom no, tom qab kev kho kom raug ntawm cov fiber optic spectrometer, hauv paus ntsiab lus, cov khoom siv no tsis tuaj yeem hloov pauv.
Kev taw qhia txog kev ua haujlwm
daim phiaj
Qhov kev xaiv ntawm grating nyob ntawm qhov ntau thiab tsawg ntawm spectral thiab qhov kev daws teeb meem uas yuav tsum tau ua. Rau cov fiber optic spectrometers, qhov ntau thiab tsawg ntawm spectral feem ntau yog ntawm 200nm thiab 2500nm. Vim yog qhov xav tau ntawm qhov kev daws teeb meem siab, nws nyuaj rau kom tau txais qhov ntau thiab tsawg ntawm spectral; tib lub sijhawm, qhov kev daws teeb meem siab dua, qhov luminous flux tsawg dua. Rau qhov xav tau ntawm qhov kev daws teeb meem qis dua thiab qhov ntau ntawm spectral, 300 kab / hli grating yog qhov kev xaiv ib txwm muaj. Yog tias xav tau qhov kev daws teeb meem siab dua, nws tuaj yeem ua tiav los ntawm kev xaiv grating nrog 3600 kab / hli, lossis xaiv lub detector nrog ntau pixel daws teeb meem.
qhov txiav
Qhov nqaim dua tuaj yeem ua rau qhov kev daws teeb meem zoo dua, tab sis lub teeb ci me dua; Ntawm qhov tod tes, qhov dav dua tuaj yeem ua rau muaj kev nkag siab ntau dua, tab sis ua rau qhov kev daws teeb meem tsis zoo. Hauv cov kev xav tau sib txawv, qhov dav ntawm qhov chaw raug xaiv los ua kom zoo dua qhov tshwm sim ntawm kev xeem tag nrho.
soj ntsuam
Lub tshuab ntes qee txoj kev txiav txim siab qhov kev daws teeb meem thiab qhov rhiab heev ntawm lub tshuab fiber optic spectrometer, thaj chaw rhiab heev ntawm lub tshuab ntes yog qhov txwv, nws muab faib ua ntau lub pixels me me rau qhov kev daws teeb meem siab lossis muab faib ua tsawg dua tab sis loj dua rau qhov rhiab heev. Feem ntau, qhov rhiab heev ntawm lub tshuab ntes CCD zoo dua, yog li koj tuaj yeem tau txais qhov kev daws teeb meem zoo dua yam tsis muaj kev rhiab heev rau qee qhov. Vim yog qhov rhiab heev thiab suab nrov thermal ntawm lub tshuab ntes InGaAs hauv ze infrared, qhov sib piv ntawm lub teeb liab rau suab nrov ntawm lub kaw lus tuaj yeem txhim kho tau zoo los ntawm kev txias.
Lub lim dej kho qhov muag
Vim yog qhov cuam tshuam ntawm ntau theem diffraction ntawm lub spectrum nws tus kheej, kev cuam tshuam ntawm ntau theem diffraction tuaj yeem txo tau los ntawm kev siv lub lim. Tsis zoo li cov spectrometers ib txwm muaj, cov fiber optic spectrometers tau coated rau ntawm lub detector, thiab qhov no ntawm lub luag haujlwm yuav tsum tau teeb tsa rau hauv qhov chaw ntawm lub Hoobkas. Tib lub sijhawm, lub txheej kuj muaj lub luag haujlwm ntawm kev tiv thaiv kev cuam tshuam thiab txhim kho qhov sib piv ntawm lub teeb liab rau suab nrov ntawm lub system.
Qhov kev ua tau zoo ntawm lub spectrometer feem ntau yog txiav txim siab los ntawm qhov ntau ntawm spectral, optical resolution thiab rhiab heev. Kev hloov pauv rau ib qho ntawm cov parameters no feem ntau yuav cuam tshuam rau kev ua tau zoo ntawm lwm cov parameters.
Qhov kev sib tw tseem ceeb ntawm lub spectrometer tsis yog kom ua kom tag nrho cov kev ntsuas thaum lub sijhawm tsim khoom, tab sis kom ua kom cov ntsuas kev ua haujlwm ntawm lub spectrometer ua tau raws li qhov yuav tsum tau ua rau cov ntawv thov sib txawv hauv qhov kev xaiv qhov chaw peb-seem no. Lub tswv yim no ua rau lub spectrometer txaus siab rau cov neeg siv khoom kom tau txais txiaj ntsig ntau tshaj plaws nrog kev nqis peev tsawg kawg nkaus. Qhov loj ntawm lub voos xwmfab nyob ntawm cov ntsuas kev ua haujlwm uas lub spectrometer xav tau kom ua tiav, thiab nws qhov loj me yog cuam tshuam nrog qhov nyuaj ntawm lub spectrometer thiab tus nqi ntawm cov khoom spectrometer. Cov khoom spectrometer yuav tsum ua tau raws li cov kev ntsuas kev ua haujlwm uas cov neeg siv khoom xav tau.
Ntau yam spectral
Cov spectrometersnrog rau qhov ntau thiab tsawg spectral me dua feem ntau muab cov ntaub ntawv ntxaws ntxaws spectral, thaum cov ntau thiab tsawg spectral loj muaj qhov pom dav dua. Yog li ntawd, qhov ntau thiab tsawg spectral ntawm lub spectrometer yog ib qho ntawm cov kev ntsuas tseem ceeb uas yuav tsum tau teev meej meej.
Cov yam tseem ceeb uas cuam tshuam rau qhov ntau ntawm spectral yog feem ntau grating thiab detector, thiab cov grating thiab detector sib xws raug xaiv raws li cov kev xav tau sib txawv.
kev rhiab heev
Hais txog qhov rhiab heev, nws yog ib qho tseem ceeb kom paub qhov txawv ntawm qhov rhiab heev hauv photometry (lub zog teeb liab me tshaj plaws uas alub tshuab ntsuas spectrometertuaj yeem ntes tau) thiab qhov rhiab heev hauv stoichiometry (qhov sib txawv me tshaj plaws hauv kev nqus uas lub spectrometer tuaj yeem ntsuas tau).
a. Kev rhiab heev ntawm lub teeb
Rau cov ntawv thov uas xav tau cov spectrometers siab rhiab heev, xws li fluorescence thiab Raman, peb pom zoo kom siv SEK thermo-cooled optical fiber spectrometers nrog thermo-cooled 1024 pixel two-dimensional array CCD detectors, nrog rau cov detector condensing lenses, cov iav kub, thiab cov kab dav (100μm lossis dav dua). Tus qauv no tuaj yeem siv sijhawm ntev (txij li 7 milliseconds txog 15 feeb) los txhim kho lub zog ntawm lub teeb liab, thiab tuaj yeem txo qhov suab nrov thiab txhim kho qhov ntau thiab tsawg.
b. Kev rhiab heev ntawm Stoichiometric
Yuav kom ntes tau ob tus nqi ntawm tus nqi nqus nrog qhov loj me ze heev, tsis yog tsuas yog qhov rhiab heev ntawm lub tshuab ntes xwb, tab sis kuj tseem xav tau qhov sib piv ntawm lub teeb liab thiab lub suab nrov. Lub tshuab ntes nrog qhov sib piv ntawm lub teeb liab thiab lub suab nrov siab tshaj plaws yog lub thermoelectric refrigerated 1024-pixel two-dimensional array CCD detector hauv SEK spectrometer nrog qhov sib piv ntawm lub teeb liab thiab lub suab nrov ntawm 1000: 1. Qhov nruab nrab ntawm ntau cov duab spectral kuj tseem tuaj yeem txhim kho qhov sib piv ntawm lub teeb liab thiab lub suab nrov, thiab qhov nce ntawm tus lej nruab nrab yuav ua rau qhov sib piv ntawm lub teeb liab thiab lub suab nrov nce ntxiv ntawm qhov ceev ntawm cov hauv paus plaub fab, piv txwv li, qhov nruab nrab ntawm 100 zaug tuaj yeem ua rau qhov sib piv ntawm lub teeb liab thiab lub suab nrov nce 10 zaug, ncav cuag 10,000: 1.
Kev daws teeb meem
Kev daws teeb meem ntawm qhov muag yog ib qho tseem ceeb uas yuav tsum ntsuas qhov muaj peev xwm faib qhov muag. Yog tias koj xav tau kev daws teeb meem siab heev, peb xav kom koj xaiv lub grating nrog 1200 kab / hli lossis ntau dua, nrog rau qhov nqaim thiab lub tshuab ntes CCD 2048 lossis 3648 pixel.
Lub sijhawm tshaj tawm: Lub Xya Hli-27-2023