Maoptical fiber spectrometer anowanzo shandisa optical fiber sechinobatanidza chiratidzo, icho chichabatanidzwa ne photometric ne spectrometer kuti chiongororwe nema spectral. Nekuda kwekureruka kwe optical fiber, vashandisi vanogona kushanduka-shanduka kugadzira system yekuwana spectrum.
Chinhu chakanaka che fiber optic spectrometers ndechekuti system yekuyera ine modularity uye inochinjika.spectromita yefiber ye opticalkubva kuMUT kuGermany inokurumidza zvekuti inogona kushandiswa pakuongorora online. Uye nekuda kwekushandiswa kwema "universal detectors" asingadhuri, mutengo we "spectrometer" unodzikira, uye nekudaro mutengo wesystem yese yekuyera unodzikira.
Magadzirirwo ekutanga e fiber optic spectrometer ane grating, slit, uye detector. Ma parameter ezvikamu izvi anofanira kutsanangurwa pakutenga spectrometer. Kushanda kwe spectrometer kunoenderana nekusanganiswa kwakanyatsojeka uye calibration yezvikamu izvi, mushure mekugadziriswa kwe optical fiber spectrometer, musimboti, zvishandiso izvi hazvigone kuchinja.
Sumo yebasa
nesefa
Kusarudzwa kwegireti kunoenderana nehuwandu hwespectral uye zvinodiwa pakugadziriswa. Kune fiber optic spectrometers, huwandu hwespectral hunowanzova pakati pe200nm ne2500nm. Nekuda kwekudiwa kwekugadziriswa kwakakwirira, zvakaoma kuwana huwandu hwakafara hwespectral; Panguva imwe chete, kana chiyero chakakwira, kuyerera kwacho kushoma. Kune zvinodiwa zvekugadziriswa kwakaderera uye huwandu hwakafara hwespectral, 300 line / mm grating ndiyo sarudzo yakajairika. Kana chiyero chakakwira chespectral chichidiwa, chinogona kuwanikwa nekusarudza gireti ine 3600 lines /mm, kana kusarudza detector ine pixel resolution yakawanda.
mutswe
Mupata wakamanikana unogona kuvandudza resolution, asi flux yechiedza idiki; Kune rumwe rutivi, mipata yakafara inogona kuwedzera sensitivity, asi zvichikanganisa resolution. Muzvinodikanwa zvakasiyana zvekushandisa, hupamhi hwakakodzera hwemupata hunosarudzwa kuti zviwedzere mhedzisiro yese yebvunzo.
ongororo
Chinoongorora chiedza nenzira dzakasiyana chinosarudza resolution uye sensitivity ye fiber optic spectrometer, nzvimbo inonzwa chiedza pa detector ine muganho, yakakamurwa kuita ma pixels madiki akawanda e high resolution kana kuti yakakamurwa kuita ma pixels mashoma asi makuru e high sensitivity. Kazhinji, sensitivity yeCCD detector iri nani, saka unogona kuwana resolution iri nani pasina sensitivity kusvika pamwero wakati. Nekuda kwekunzwa kwakanyanya uye ruzha rwekupisa rweInGaAs detector mu near infrared, signal-to-noise ratio yesystem inogona kuvandudzwa zvinobudirira kuburikidza nekuisa firiji.
Sefa yemaziso
Nekuda kwemhedzisiro ye multistage diffraction ye spectrum pachayo, kupindira kwe multistage diffraction kunogona kuderedzwa nekushandisa firita. Kusiyana nema spectrometer akajairwa, fiber optic spectrometers dzakaputirwa pa detector, uye chikamu ichi chebasa chinofanira kuiswa panzvimbo yacho pafekitori. Panguva imwe chete, coating inewo basa rekudzivirira kupenya uye inovandudza signal-to-noise ratio yesystem.
Kushanda kwespectrometer kunonyanya kutariswa nespectral range, optical resolution uye sensitivity. Kuchinja kune imwe yeiyi parameters kunowanzo kanganisa mashandiro emamwe ma parameter.
Dambudziko guru respectrometer harisi rekuwedzera ma parameter ese panguva yekugadzira, asi kuita kuti zviratidzo zvehunyanzvi zvespectrometer zvisangane nezvinodiwa zvekushanda kwezvishandiso zvakasiyana musarudzo iyi yenzvimbo ine mativi matatu. Iyi nzira inoita kuti spectrometer ikwanise kugutsa vatengi kuti vawane purofiti yakawanda nekudyara mari shoma. Hukuru hwecube hunoenderana nezviratidzo zvehunyanzvi izvo spectrometer inoda kuwana, uye hukuru hwayo hunoenderana nekuoma kwespectrometer nemutengo wechigadzirwa chespectrometer. Zvigadzirwa zveSpectrometer zvinofanirwa kusangana zvizere nezviratidzo zvehunyanzvi zvinodiwa nevatengi.
Nzvimbo yeSpectral
MaSpectrometerine spectral range diki inowanzopa ruzivo rwakadzama rwespectral, nepo spectral ranges hombe dzine spectral range yakafara. Saka, spectral range yespectral spectrum ndeimwe yeparameters dzakakosha dzinofanira kutsanangurwa zvakajeka.
Zvinhu zvinokanganisa spectral range zvinonyanya kuve grating uye detector, uye grating inoenderana uye detector zvinosarudzwa zvichienderana nezvinodiwa zvakasiyana.
kunzwa
Tichitaura nezve sensitivity, zvakakosha kusiyanisa pakati pe sensitivity mu photometry (simba diki resignal iro aspectromitaanogona kuona) uye kunzwa mu stoichiometry (musiyano mudiki mukunyudzwa kweropa unogona kuyera spectrometer).
a. Kunzwa kwe photometric
Kune maapplication anoda high sensitivity spectrometers, akadai se fluorescence ne Raman, tinokurudzira SEK thermo-cooled optical fiber spectrometers ine thermo-cooled 1024 pixel two-dimensional array CCD detectors, pamwe chete ne detector condensing lenses, gold mirrors, uye wide slits (100μm kana wide). Iyi modhi inogona kushandisa nguva refu yekubatanidza (kubva pa7 milliseconds kusvika kumaminitsi gumi nemashanu) kuvandudza simba remasaini, uye inogona kuderedza ruzha uye kuvandudza dynamic range.
b. Kunzwa kweStoichiometric
Kuti muone kukosha kwemuyero wekunyudzwa kwesimba nehukuru hwakafanana, hazvidiwi chete kuti detector inzwe sei, asiwo kuti signal-to-noise ratio inodiwa. Detector ine signal-to-noise ratio yepamusoro ndiyo thermoelectric refrigerated 1024-pixel two-dimensional array CCD detector muSEK spectrometer ine signal-to-noise ratio ye1000:1. Avhareji yemifananidzo yakawanda yespectral inogonawo kuvandudza signal-to-noise ratio, uye kuwedzera kweavhareji yenhamba kuchaita kuti signal-to-noise ratio iwedzere pakumhanya kwe square root, semuenzaniso, avhareji ye100 times inogona kuwedzera signal-to-noise ratio kagumi, kusvika 10,000:1.
Kugadziriswa
Kugadziriswa kwechiedza chinhu chakakosha pakuyera kugona kwekupatsanura kwechiedza. Kana uchida kugadziriswa kwakanyanya kwechiedza, tinokurudzira kuti usarudze grating ine mitsetse 1200/mm kana kupfuura, pamwe chete nekatsemuka katete uye 2048 kana 3648 pixel CCD detector.
Nguva yekutumira: Chikunguru-27-2023