Mantsoe a bohlokoa: VPH Solid-phase holographic grating, Transmittance spectrophotometer, Reflectance spectrometer, Czerny-Turner Optical path.
1.Kakaretso
Fiber optic spectrometer e ka aroloa e le pontšo le phetiso, ho latela mofuta oa grating ea diffraction.Diffraction grating ha e le hantle ke ntho ea optical, e nang le palo e kholo ea mekhoa e arohaneng ka ho lekana e ka ba holimo kapa ka hare.Ke karolo ea bohlokoa ea fiber optic spectrometer.Ha leseli le kopana le grating tsena, hasana ho li-angles tse fapaneng tse laetsoeng ke maqhubu a fapaneng a maqhubu ka ketsahalo e tsejoang e le khanya ea khanya.
Ka holimo: Sebōpeho se bonahatsang khethollo (ka ho le letšehali) le spectrometer ea transmittance (ka ho le letona)
Diffraction gratings ka kakaretso li arotsoe ka mefuta e 'meli: reflection le Transmission gratings.Li-grating tsa ho bonahatsa li ka aroloa hape ka li-grating tse bonahatsang sefofane le li-gratings tse nang le concave, ha li-grating tsa phetiso li ka aroloa ka li-gratings tsa mofuta oa groove le li-grating tsa phetiso ea volume phase holographic (VPH).Sengoliloeng sena haholo-holo se hlahisa spectrometer ea mofuta oa sefofane sa grating spectrometer le VPH grating-type transmittance spectrometer.
Ka holimo: Grating e bonts'ang (ka ho le letšehali) le Mokhahlelo oa phetiso (ka ho le letona).
Hobaneng ha li-spectrometer tse ngata joale li khetha ho hasana ha grating ho fapana le prism?Haholo-holo e khethoa ke melao-motheo ea spectral ea grating.Palo ea mela ka millimeter holim'a grating (tekanyo ea mela, yuniti: lines/mm) e etsa qeto ea bokhoni ba spectral ba grating.Boitlamo bo phahameng ba mohala bo fella ka khaso e kholo ea khanya ea maqhubu a fapaneng ka mor'a hore e fete har'a grating, e leng se lebisang ho khetholo e phahameng ea optical.Ka kakaretso, li-groove tse fumanehang le tse nang le li-groove li kenyelletsa 75, 150, 300, 600, 900, 1200, 1800, 2400, 3600, joalo-joalo, tse finyellang litlhoko tsa mefuta le liqeto tse fapaneng.Leha ho le joalo, prism spectroscopy e lekanyelitsoe ke ho hasana ha lisebelisoa tsa khalase, moo thepa e qhalakaneng ea khalase e khethollang bokhoni ba spectroscopic ba prism.Kaha thepa ea ho qhalakanya ea lisebelisoa tsa khalase e lekanyelitsoe, ho thata ho fihlela litlhoko tsa mefuta e fapaneng ea li-spectral.Ka hona, ha e sebelisoe hangata ho li-fiber optic spectrometers tsa khoebo.
Tlhaloso: Litlamorao tsa likhahla tse fapaneng tsa groove groove setšoantšong se kaholimo.
Setšoantšo se bonts'a spectrometry ea ho hasana ea khanya e tšoeu ka khalase le diffraction spectrometry ka grating.
Nalane ea nts'etsopele ea li-gratings, e qala ka "teko ea "Young's double-slit" ea khale: Ka 1801, setsebi sa fisiks sa Borithane Thomas Young o ile a sibolla tšitiso ea leseli e sebelisa liteko tse habeli.Leseli la monochromatic le fetang likheong tse habeli le bonts'itse litjellane tse khanyang le tse lefifi.Teko ea likarolo tse peli e ile ea tiisa pele hore leseli le bontša litšobotsi tse tšoanang le maqhubu a metsi (sebopeho sa maqhubu a khanya), se bakang maikutlo sechabeng sa fisiks.Ka mor'a moo, litsebi tsa fisiks tse 'maloa li ile tsa etsa liteko tsa ho kena-kenana le li-multiple-slit' me tsa bona ts'ebetso ea ho fapanyetsana ha leseli ka li-gratings.Hamorao, setsebi sa fisiks sa Lefora Fresnel o ile a qapa khopolo ea motheo ea ho fapana ha grating ka ho kopanya mekhoa ea lipalo e hlahisitsoeng ke rasaense oa Lejeremane Huygens, a sebelisa liphetho tsena.
Setšoantšo se bonts'a tšitiso e habeli ea Young ka letsohong le letšehali, ka litjellane tse khanyang le tse lefifi.Multi-slit diffraction (ka ho le letona), kabo ea lihlopha tse mebala ka litaelo tse fapaneng.
2.Reflective Spectrometer
Li-spectrometers tse bonts'ang hangata li sebelisa tsela ea mahlo e entsoeng ka liipone tse fapaneng tsa sefofane le liipone tsa concave, tse bitsoang Czerny-Turner Optical path.Ka kakaretso e na le lekhalo, lekhalo le tukang sefofaneng, liipone tse peli tse kolokileng le sebui.Tlhophiso ena e tšoauoa ka qeto e phahameng, khanya e tlase, le khanya e phahameng ea optical.Ka mor'a hore lets'oao la leseli le kene ka lekhalo le moqotetsane, le qala ka ho kopanngoa hore e be balm e bapileng ke sebonela-hōle sa khoho, ebe se otla grating ea planar diffractive moo li-wavelengths tsa constituent li arohaneng ka li-angles tse fapaneng.Qetellong, sets'oants'o sa "concave reflector" se lebisa leseli le arohaneng holim'a photodetector 'me matšoao a maqhubu a fapaneng a tlalehoa ke pixels libakeng tse sa tšoaneng ho photodiode chip, qetellong a hlahisa spectrum.Ka tloaelo, spectrometer ea reflection e boetse e kenyelletsa li-filters tse hatellang tsa mofuta oa bobeli le lilense tsa kholomo ho ntlafatsa boleng ba ponahalo.
Setšoantšo se bonts'a mofuta oa sefapano sa CT optical grating spectrometer.
Ho lokela ho boleloa hore Czerny le Turner hase bona baqapi ba tsamaiso ena ea optical empa ba hopoloa ka menehelo ea bona e ikhethang lefapheng la optics-setsebi sa linaleli sa Austria Adalbert Czerny le rasaense oa Jeremane Rudolf W. Turner.
Tsela ea optical Czerny-Turner ka kakaretso e ka aroloa ka mefuta e 'meli: e tšetsoeng le e sa phutholohang (mofuta oa M).Tsela ea optical crossed / M-type optical path e na le compact ho feta.Mona, kabo ea symmetrical ka ho le letšehali ea liipone tse peli tsa concave tse amanang le grating ea sefofane, e bonts'a matšeliso a mabeli a ho senyeha ha li-off-axis, e leng se hlahisang qeto e phahameng ea optical.SpectraCheck® SR75C fiber optic spectrometer e sebelisa mokhoa oa optical oa mofuta oa M, o finyella qeto e phahameng ea optical ho fihlela ho 0.15nm ka har'a mahlaseli a ultraviolet a 180-340 nm.
Ka holimo: Tsela ea optical ea mofuta oa cross-type/mofuta o atolositsoeng (M-mofuta) optical path.
Ho phaella moo, ntle le li-gratings tse bataletseng tsa mollo, ho boetse ho na le mollo oa mollo oa concave.Mohaho oa mollo oa concave o ka utloisisoa e le motsoako oa seipone sa concave le grating.Ka hona, sebonela-hōle sa "concave blaze grating" se na le sekheo feela, lekhalo la mollo le sebui, se etsang hore ho be le botsitso bo phahameng.Leha ho le joalo, lebone la mollo oa concave le behile tlhokahalo lehlakoreng le bohole ba leseli le fapaneng le ketsahalo, le fokotsa likhetho tse fumanehang.
Ka holimo: Concave grating spectrometer.
Nako ea poso: Dec-26-2023