Ama-spectrometer e-fiber optical ngokuvamile asebenzisa i-optical fibre njenge-coupler yesignali, ezoba yi-photometric ehlanganiswe ne-spectrometer ukuze ihlaziye i-spectral.Ngenxa yobulula be-fiber optical, abasebenzisi bangakwazi ukuguquguquka kakhulu ukwakha uhlelo lokutholwa kwe-spectrum.
Inzuzo yama-fiber optic spectrometers ukuguquguquka nokuguquguquka kwesistimu yokulinganisa.I-microi-fiber optical spectrometerkusuka eMUT eJalimane kuyashesha kangangokuthi kungasetshenziselwa ukuhlaziya ku-inthanethi.Futhi ngenxa yokusetshenziswa kwemitshina yendawo yonke engabizi kakhulu, izindleko ze-spectrometer ziyancipha, futhi ngaleyo ndlela izindleko zalo lonke uhlelo lokulinganisa ziyancipha.
Ukucushwa okuyisisekelo kwe-fiber optic spectrometer kuqukethe igridi, umkejana, kanye nomtshina.Imingcele yalezi zingxenye kufanele icaciswe lapho uthenga i-spectrometer.Ukusebenza kwe-spectrometer kuncike ekuhlanganiseni okunembile kanye nokulinganiswa kwalezi zingxenye, ngemva kokulinganiswa kwe-fiber optical fibre spectrometer, ngokuyisisekelo, lezi zesekeli azikwazi ukuba nezinguquko.
Isingeniso somsebenzi
ukugaya
Ukukhetha i-grating kuncike ebangeni le-spectral nezidingo zokuxazulula.Kuma-spectrometer e-fiber optic, ububanzi be-spectral ngokuvamile buphakathi kuka-200nm no-2500nm.Ngenxa yesidingo sokuxazulula okuphezulu, kunzima ukuthola ububanzi obubanzi be-spectral;Ngesikhathi esifanayo, ukuphakama kwesidingo sokuxazulula, ukuguquguquka okuncane okukhanyayo.Ngezidingo zokulungiswa okuphansi kanye nobubanzi obubanzi be-spectral, umugqa we-300 / mm grating kuwukukhetha okuvamile.Uma kudingeka ukulungiswa kwe-spectral ephakeme uma kuqhathaniswa, kungafinyelelwa ngokukhetha igridi enemigqa engu-3600/mm, noma ukukhetha umtshina onokucaca kwamaphikseli amaningi.
i-slit
I-slit encane ingathuthukisa ukulungiswa, kodwa ukukhanya okukhanyayo kuncane;Ngakolunye uhlangothi, ama-slits abanzi angakhuphula ukuzwela, kodwa ngezindleko zokuxazulula.Ezimfuneko ezihlukene zohlelo lokusebenza, ububanzi obufanele bokuhlukanisa bukhethwa ukuze kuthuthukiswe umphumela wokuhlola wonke.
phenya
Umtshina ngandlela thize unquma ukuxazululeka nokuzwela kwe-fiber optic spectrometer, indawo ezwela ukukhanya kumtshina ngokomthetho inomkhawulo, ihlukaniswe ngamaphikseli amaningi amancane ukuze ilungiswe phezulu noma ihlukaniswe ngamaphikseli ambalwa kodwa amakhulu ukuze kube nokuzwela okuphezulu.Ngokuvamile, ukuzwela komtshina we-CCD kungcono, ngakho ungathola isixazululo esingcono ngaphandle kokuzwela ngokwezinga elithile.Ngenxa yokuzwela okuphezulu nomsindo oshisayo womtshina we-InGaAs eduze ne-infrared, isilinganiso sesignali-kumsindo wesistimu singathuthukiswa ngempumelelo ngokusebenzisa isiqandisi.
Isihlungi esibonakalayo
Ngenxa yomphumela we-multistage diffraction we-spectrum ngokwayo, ukuphazamiseka kwe-multistage diffraction kungancishiswa ngokusebenzisa isihlungi.Ngokungafani nama-spectrometer avamile, ama-fiber optic spectrometer ambozwe kumtshina, futhi le ngxenye yomsebenzi idinga ukufakwa endaweni yawo efekthri.Ngesikhathi esifanayo, ukugqoka kubuye kube nomsebenzi wokuphikisa futhi kuthuthukise isilinganiso sesignali-kuya-nomsindo wesistimu.
Ukusebenza kwe-spectrometer kunqunywa ikakhulukazi ububanzi be-spectral, ukulungiswa kwe-optical nokuzwela.Ushintsho kwenye yalezi zinhlaka ngokuvamile luzothinta ukusebenza kwamanye amapharamitha.
Inselele enkulu ye-spectrometer ayikona ukukhulisa wonke amapharamitha ngesikhathi sokukhiqiza, kodwa ukwenza izinkomba zobuchwepheshe ze-spectrometer zihlangabezane nezidingo zokusebenza zezinhlelo zokusebenza ezahlukene kulokhu kukhethwa kwesikhala se-three-dimensional.Leli su livumela i-spectrometer ukuthi yanelise amakhasimende ngembuyiselo ephezulu ngokutshalwa kwezimali okuncane.Ubukhulu be-cube buncike ezinkomba zobuchwepheshe okufanele i-spectrometer ifinyelele, futhi ubukhulu bayo buhlobene nobunzima be-spectrometer kanye nentengo yomkhiqizo we-spectrometer.Imikhiqizo ye-Spectrometer kufanele ihlangabezane ngokugcwele nemingcele yezobuchwepheshe edingwa amakhasimende.
Ububanzi be-Spectral
Ama-Spectrometersezinobubanzi obuncane be-spectral ngokuvamile zinikeza ulwazi oluningiliziwe lwe-spectral, kuyilapho ububanzi be-spectral bunobubanzi obubonakalayo obubanzi.Ngakho-ke, ububanzi be-spectral be-spectrometer bungenye yemingcele ebalulekile okufanele icaciswe ngokucacile.
Izici ezithinta ububanzi be-spectral ikakhulukazi i-grating kanye nomtshina, futhi i-grating ehambisanayo nomtshina kukhethwa ngokuvumelana nezidingo ezahlukene.
ukuzwela
Uma sikhuluma ngokuzwela, kubalulekile ukuhlukanisa phakathi kokuzwela ku-photometry (amandla esignali amancane kakhulu ai-spectrometeringakwazi ukubona) kanye nokuzwela ku-stoichiometry (umehluko omncane kakhulu wokumuncwa ongawukala i-spectrometer).
a.Ukuzwela kwe-Photometric
Kuzinhlelo zokusebenza ezidinga ama-spectrometer azwela kakhulu, afana ne-fluorescence ne-Raman, sincoma ama-SEK thermo-cooled fibre optical fibre spectrometers ane-thermo-cooled 1024 pixel two-dimensional array array detector ye-CCD, kanye namalensi ajiyayo, izibuko zegolide, nezinselelo ezibanzi ( 100μm noma ngaphezulu).Le modeli ingasebenzisa izikhathi ezinde zokuhlanganisa (kusuka kuma-millisecond angu-7 ukuya kumaminithi angu-15) ukuthuthukisa amandla esignali, futhi inganciphisa umsindo futhi ithuthukise ububanzi obuguqukayo.
b.Ukuzwela kwe-Stoichiometric
Ukuze uthole amanani amabili wezinga lokumunca nge-amplitude eseduze kakhulu, hhayi kuphela ukuzwela komtshina okudingekayo, kodwa futhi isilinganiso sesignali-kuya-nomsindo siyadingeka.Umtshina onesilinganiso esiphakeme kakhulu sesignali-kuya-noise yi-thermoelectric eqandisiwe engu-1024-pixel yohlelo olukabili lwe-CCD detector ye-spectrometer ye-SEK ene-signal-to-noise ratio engu-1000:1.Isilinganiso sezithombe eziningi ze-spectral singaphinda sithuthukise isilinganiso sesignali-kuya-nomsindo, futhi ukwanda kwenani elimaphakathi kuzobangela isilinganiso sesignali-kuya-nomsindo ukuthi sikhuphuke ngesivinini sempande yesikwele, isibonelo, isilinganiso sezikhathi ezingu-100 ukwandisa isilinganiso sesignali-kuya-nomsindo izikhathi ezingu-10, sifinyelele ku-10,000:1.
Isixazululo
Ukulungiswa kwe-Optical kuyipharamitha ebalulekile yokulinganisa ikhono lokuhlukanisa i-optical.Uma udinga ukukhanya okuphakeme kakhulu, sincoma ukuthi ukhethe igridi enemigqa engu-1200/mm noma ngaphezulu, kanye nomkejana omncane kanye nomtshina we-CCD ongu-2048 noma 3648 wamaphikiseli.
Isikhathi sokuthumela: Jul-27-2023