I-Optical fiber spectrometers ivame ukusebenzisa i-fiber optical njenge-coupler yesiginali, ezobe i-photometric ehlanganiswe kwi-spectrometer yokuhlaziywa kokubukwa. Ngenxa yokusebenziseka kalula kwe-fiber optical, abasebenzisi bangashintshashintsha kakhulu ukwakha uhlelo lokutholwa kwe-spectrum.
Inzuzo yama-spectrometers we-fiber optic, ukungenisa kanye nokuguquguquka kohlelo lokulinganisa. MicroI-Optical fib SpectrometerUkusuka ku-MUT eJalimane kushesha kakhulu kangangokuba kungasetshenziselwa ukuhlaziya online. Futhi ngenxa yokusebenzisa imishini yokuthola imali ephansi, izindleko ze-spectrometer zincishisiwe, futhi ngenxa yalokho izindleko zohlelo lonke lokulinganisa ziyancishiswa
Ukucushwa okuyisisekelo kwe-fiber optic spectrometer kuqukethe i-grating, i-slit, nomtshina. Amapharamitha alezi zinto kumele acaciswe lapho uthenga i-spectrometer. Ukusebenza kwe-spectrometer kuncike ekuhlanganiseni okunembile nokulinganiswa kwalezi zingxenye, ngemuva kokulinganisa kwe-Optical fiber Spectrometer, ngokwesimiso, lezi zesekeli azikwazi ukuba nezinguquko.
Isingeniso somsebenzi
ugwaja
Ukukhethwa kwe-grating kuncike ezinsukwini ezibonakalayo kanye nezidingo zokuxazulula. Okwe-fiber optic spectrometers, uhla lwembukiso luvame phakathi kuka-200nm no-2500mm. Ngenxa yesidingo sokulungiswa okuphezulu, kunzima ukuthola uhla olubanzi lokubuka; Ngasikhathi sinye, kuphakama imfuneko yesinqumo, i-flux engaphansi. Ngezidingo zokulungiswa okuphansi kanye nobubanzi obubanzi bokubukwa, umugqa we-300 / mm yiyona ndlela ejwayelekile. Uma kudingeka ukulungiswa okuphezulu okuphezulu, kungatholakala ngokukhetha i-grating nge imigqa engu-3600 / mm, noma ukukhetha umtshina ngesisombululo esiningi se-pixel.
umqhewu
I-slit emncane ingathuthukisa isisombululo, kepha i-flux ekhanyayo incane; Ngakolunye uhlangothi, ama-slits abanzi angakhulisa ukuzwela, kepha ngezindleko zokuxazululwa. Ezimfuneko ezihlukile zohlelo lokusebenza, kukhethwe ububanzi obufanele be-slit ukuze basebenzise umphumela wokuhlola jikelele.
icala lolo munye noma
Umtshina ngandlela thile unquma ukulungiswa kanye nokuzwela kwe-fiber optic spectrometer, isifunda esibucayi esikhanyayo esilinganisweni silinganiselwe, sihlukaniswe ngamaphikseli amancane ngokulungiswa okuphezulu noma okuhlukaniswe ngamaphikseli ambalwa ngokukhula okuphezulu. Ngokuvamile, ukuzwela komtshina we-CCD kungcono, ngakho-ke ungathola ukulungiswa okungcono ngaphandle kokuzwela ngezinga elithile. Ngenxa yokuzwela okuphezulu kanye nomsindo oshisayo womtshina we-Ingaas eduze kwe-infrared, isilinganiso se-signal-to-umsindo sohlelo singathuthukiswa ngempumelelo ngesiqandisi.
Isihlungi se-Optical
Ngenxa yomphumela wokuphazamiseka okuhlukahlukene kwesibonisi uqobo, ukuphazanyiswa kokuphazamiseka okuningi kungancishiswa ngokusebenzisa isihlungi. Ngokungafani nama-spectrometer ajwayelekile, ama-spectrometer e-fiber optic ahlanganiswe kumtshina, futhi le ngxenye yomsebenzi idinga ukufakwa endaweni efektri. Ngasikhathi sinye, i-coating nayo inomsebenzi wokulwa nokubonisa futhi ithuthukise isilinganiso se-Signal-to-Noise sohlelo.
Ukusebenza kwe-spectrometer kunqunywa ikakhulu ububanzi bokubukeka, ukulungiswa okubonakalayo nokuzwela. Ushintsho kwenye yalezi zinhlaka ngokuvamile kuzothinta ukusebenza kwamanye amapharamitha.
Inselelo enkulu ye-spectrometer akuyona ukukhulisa wonke amapharamitha ngesikhathi sokukhiqiza, kodwa ukwenza izinkomba zobuchwepheshe ze-spectrometer zihlangabezane nezidingo zokusebenza kwezicelo ezahlukahlukene kulokhu kukhethwa kwesikhala esinezici ezintathu. Leliqhinga linika amandla ama-spectrometer ukwanelisa amakhasimende ngokubuya okuphezulu ngokutshala imali okuncane. Ubukhulu bekhilokhi buxhomeke kwizinkomba zobuchwepheshe ukuthi i-spectrometer idinga ukufezekisa, futhi usayizi wayo uhlobene nobunzima be-spectrometer kanye nentengo yomkhiqizo we-spectrometer. Imikhiqizo ye-Spectrometer kufanele ihlangabezane ngokuphelele nemingcele yezobuchwepheshe edingwa amakhasimende.
Ibanga lokubuka
Ama-spectrometerNgobubanzi obuncane bokubukeka buvame ukunikeza imininingwane eningiliziwe yokubuka okubonakalayo, kanti amabanga amakhulu abukeka anobubanzi obubonayo obubanzi. Ngakho-ke, uhla lwembukiso ye-spectrometer kungenye yamapharamitha abalulekile okufanele acaciswe ngokucacile.
Izici ezithinta uhla lwe-Prectral ziyi-grating kanye nomtshina, futhi i-grating kanye ne-detector ehambisanayo kukhethwe ngokuya ngezidingo ezihlukile.
ukuzwela
Ukukhuluma ngokuzwela, kubalulekile ukuhlukanisa phakathi kokuzwela ku-photometry (amandla amancane kakhulu wesiginali aspectrometerIyakwazi ukubona) nokuzwela eStoichiometry (umehluko omncane kakhulu ekutholeni ukuthi i-spectrometer ingalinganisa).
a. Ukuzwela Kwezithombe
Ngezinhlelo zokusebenza ezidinga ama-spectrometers aphezulu wokuzwela, njenge-fluorescence kanye ne-raman, sincoma ama-sep thermo-apholile ama-aptical fiber sportometers ane-thermo-apholile ama-1024 pixeng ama-lens we-1024 ama-slits (100μm noma abanzi). Le modeli ingasebenzisa izikhathi zokuhlanganiswa ezinde (kusuka kuma-milliseconds ama-7 millesecond kuya kumaminithi ayi-15) ukwenza ngcono amandla esiginali, futhi kunganciphisa umsindo futhi kuthuthukise uhla olushukumisayo.
b. Ukuzwela kweStoichiometric
Ukuze ubone amanani amabili wokutholwa kwezinga lokutholwa nge-amplitude elisondele kakhulu, hhayi kuphela ukuzwela komtshina okudingekayo, kepha futhi nesilinganiso somsindo esiyadingeka. Umtshina onesilinganiso esiphakeme kakhulu se-Signal-To-Noise ngumtshina we-thermoelectric unqandekile we-1024-pixel ama-array CCD CCD ku-Sek Spectrometer ngesilinganiso se-Signal-to-Noise Ratio of 1000: 1. Isilinganiso sezithombe eziningi ze-spectral singathuthukisa futhi isilinganiso se-Signal-to-Noise, futhi ukwanda kwenombolo okuyisilinganiso kuzodala isilinganiso se-Root-to-umsindo ukuze sikhuphule isivinini sezimpande zesikwele, sifinyelela ku-10,000: 1.
Isixazululo
Ukulungiswa kwe-Optical kuyinto ipharamitha ebalulekile ukukala amandla okuhlukanisa. Uma udinga ukulungiswa okuphezulu kakhulu okubonakalayo, sincoma ukuthi ukhethe i-grating enemigqa engu-1200 / mm noma ngaphezulu, kanye nomtshina omncane wePixel CCD.
Isikhathi sePosi: Jul-27-2023