Optical fiber spectrometers inowanzo shandisa optical fiber sechiratidzo coupler, inova photometric yakabatanidzwa kune spectrometer ye spectral analysis. Nekuda kwekureruka kwefiber optical, vashandisi vanogona kuchinjika zvakanyanya kuvaka spectrum yekutora system.
Kubatsira kwefiber optic spectrometers ndiyo modularity uye kuchinjika kweyeyero system. Iyo microoptical fiber spectrometerkubva kuMUT kuGermany inokurumidza zvekuti inogona kushandiswa pakuongorora online. Uye nekuda kwekushandiswa kwemitengo yakaderera yepasirese detectors, mutengo weiyo spectrometer inoderedzwa, uye nekudaro mutengo weiyo yese yekuyera system inoderedzwa.
Iyo yekutanga gadziriso yefiber optic spectrometer ine grating, slit, uye detector. Izvo zviyero zvezvikamu izvi zvinofanirwa kutsanangurwa kana uchitenga spectrometer. Kuita kweiyo spectrometer kunoenderana nechaiyo musanganiswa uye kuenzanisa kwezvikamu izvi, mushure mekuenzanisa kweiyo optical fiber spectrometer, mumusimboti, izvi zvishongedzo hazvigone kuve nekuchinja.
Function sumo
grating
Sarudzo ye grating inotsamira pane spectral renji uye kugadzirisa zvinodiwa. Kune fiber optic spectrometers, iyo spectral range inowanzova pakati pe200nm ne2500nm. Pamusana pezvinodiwa zvekugadzirisa zvakanyanya, zvakaoma kuwana ruzivo rwakakura; Panguva imwecheteyo, iyo yakakwirira yekugadziriswa kwezvinodiwa, zvishoma zvinopenya zvinopenya. Nezvinodiwa zveyakadzika resolution uye yakafara spectral renji, 300 mutsara / mm grating ndiyo yakajairika sarudzo. Kana gadziriso yakanyanyisa kutaridzika ichidikanwa, inogona kuwanikwa nekusarudza grating ine 3600 mitsara / mm, kana kusarudza detector ine mamwe pixel resolution.
slit
Iyo yakatetepa slit inogona kuvandudza kugadzirisa, asi mwenje flux idiki; Kune rimwe divi, kutsemuka kwakakura kunogona kuwedzera kunzwa, asi nekurasikirwa kwekugadzirisa. Mune zvakasiyana zvinodiwa zvekushandisa, iyo yakakodzera slit upamhi inosarudzwa kuti ikwidze iyo yakazara bvunzo mhinduro.
probe
Iyo detector mune dzimwe nzira inosarudza kugadzirisa uye kunzwisiswa kwefiber optic spectrometer, nzvimbo yechiedza inonzwa pane detector iri mumitemo inogumira, yakakamurwa kuva mapikisiki maduku akawanda ekugadziriswa kwepamusoro kana kukamurwa kuva mashoma asi makuru pixels ekunzwa kwepamusoro. Kazhinji, kunzwa kweCCD detector kuri nani, saka unogona kuwana sarudzo iri nani pasina kunzwisiswa kune imwe nhanho. Nekuda kwekunzwa kwakanyanya uye ruzha rwekupisa kweInGaAs detector iri pedyo ne infrared, chiratidzo-ku-ruzha chiyero cheiyo system chinogona kuvandudzwa nenzira yefiriji.
Optical sefa
Nekuda kweiyo multistage diffraction maitiro eiyo spectrum pachayo, kupindira kwe multistage diffraction kunogona kuderedzwa nekushandisa sefa. Kusiyana neyakajairwa ma spectrometers, fiber optic spectrometers yakavharwa pane detector, uye ichi chikamu chebasa chinoda kuiswa panzvimbo pafekitori. Panguva imwecheteyo, kuvhara kunewo basa rekudzivirira-reflection uye inovandudza chiratidzo-ku-ruzha chiyero chegadziriro.
Kuita kweiyo spectrometer kunonyanya kutsanangurwa neiyo spectral renji, optical resolution uye sensitivity. Shanduko kune imwe yeiyi paramita inowanzo kanganisa kuita kwemamwe ma paramita.
Chinetso chikuru che spectrometer hachisi chekuwedzera ma parameter ese panguva yekugadzirwa, asi kuita kuti zviratidziro zvehunyanzvi zve spectrometer zvisangane nezvinodiwa zvekushanda kwezvikumbiro zvakasiyana mune ino-matatu-dimensional nzvimbo sarudzo. Iri zano rinogonesa iyo spectrometer kugutsa vatengi kuti vadzoke zvakanyanya nemari shoma. Saizi yecube inoenderana nehunyanzvi zviratidzo izvo spectrometer inoda kuwana, uye saizi yayo ine hukama nekuoma kweiyo spectrometer uye mutengo wechigadzirwa che spectrometer. Zvigadzirwa zveSpectrometer zvinofanirwa kusangana zvizere nematekinoroji ma paramita anodiwa nevatengi.
Spectral range
Spectrometersine diki diki renji rinowanzopa ruzivo rwakadzama rwekuona, nepo mahombe ezviratidziro ane hupamhi hwekuona. Naizvozvo, iyo spectral range ye spectrometer ndeimwe yeakakosha paramita inofanirwa kujekeswa.
Izvo zvinhu zvinokanganisa spectral range zvinonyanya grating uye detector, uye inoenderana grating uye detector inosarudzwa maererano nezvinodiwa zvakasiyana.
kunzwa
Kutaura nezvekunzwa, zvakakosha kusiyanisa pakati pekunzwa muphotometry (iyo idiki simba rechiratidzo iro aspectrometerinogona kuona) uye kunzwisiswa mu stoichiometry (musiyano mudiki mukunyura unogona kuyera spectrometer).
a. Photometric senitivity
Nezvezvishandiso zvinoda ma spectrometer akakwira, akadai sefluorescence neRaman, tinokurudzira SEK thermo-yakatonhorera optical fiber spectrometers ine thermo-yakatonhorera 1024 pixel maviri-dimensional array CCD detectors, pamwe ne detector condensing lenses, magirazi egoridhe, uye slits yakakura ( 100μm kana yakafara). Iyi modhi inogona kushandisa nguva refu yekubatanidza (kubva pa7 milliseconds kusvika 15 maminetsi) kuvandudza simba rechiratidzo, uye inogona kuderedza ruzha uye kuvandudza simba renji.
b. Stoichiometric kunzwa
Kuti uone maitiro maviri ekunyura chiyero nepedyo amplitude, kwete chete senitivity ye detector inodiwa, asiwo chiratidzo-ku-ruzha ratio inodiwa. Iyo detector ine yepamusoro-soro chiratidzo-ku-ruzha reshiyo ndiyo thermoelectric refrigerated 1024-pixel maviri-dimensional array CCD detector muSEK spectrometer ine chiratidzo-ku-ruzha reshiyo ye1000: 1. Avhareji yemifananidzo yakawanda yemifananidzo inogonawo kuvandudza chiratidzo-ku-ruzha reshiyo, uye kuwedzera kweavhareji nhamba kuchaita kuti chiratidzo-ku-ruzha chiyero chiwedzere pakumhanya kwesquare root, semuenzaniso, avhareji ye100 nguva inogona. wedzera chiratidzo-ku-ruzha reshiyo kagumi, kusvika gumi,000:1.
Resolution
Optical resolution ndiyo yakakosha parameter kuyera kugona kutsemuka kwemaziso. Kana uchida kukwidzwa kwepamusoro-soro, tinokurudzira kuti usarudze gireti rine mitsara 1200/mm kana kudarika, pamwe nekakupwanyika uye 2048 kana 3648 pixel CCD detector.
Nguva yekutumira: Jul-27-2023