Ka hana o ka fiber spectrometer

Hoʻohana maʻamau nā mea kikoʻī o ka fiber optical i ka fiber optical ma ke ʻano he mea hoʻohui hōʻailona, ​​​​e hoʻopili ʻia ka photometric me ka spectrometer no ka nānā ʻana. Ma muli o ka maʻalahi o ka fiber optical, hiki i nā mea hoʻohana ke maʻalahi loa e kūkulu i kahi ʻōnaehana loaʻa spectrum.

ʻO ka pono o ka fiber optic spectrometers ka modularity a me ka maʻalahi o ka ʻōnaehana ana. ʻO ka microʻikeʻike fiber opticalmai MUT ma Kelemania he wikiwiki loa ia e hiki ke hoʻohana ʻia no ka ʻikepili pūnaewele. A ma muli o ka hoʻohana ʻana i nā mea ʻike honua haʻahaʻa haʻahaʻa, ua hoʻemi ʻia ke kumukūʻai o ka spectrometer, a no laila ua hoʻemi ʻia ke kumukūʻai o ka ʻōnaehana ana holoʻokoʻa.

ʻO ka hoʻonohonoho maʻamau o ka fiber optic spectrometer aia i ka grating, kahi ʻāpana, a me kahi mea ʻike. Pono e kuhikuhi ʻia nā ʻāpana o kēia mau mea i ke kūʻai ʻana i kahi spectrometer. ʻO ka hana o ka spectrometer e pili ana i ka hui pololei a me ka calibration o kēia mau mea, ma hope o ka calibration o ka spectrometer fiber optical, ma ke kumu, ʻaʻole hiki i kēia mau mea ke hoʻololi.

Hoʻolauna hana

mākūʻai

ʻO ke koho o ka grating e pili ana i ka laulā spectral a me nā koi hoʻonā. No ka fiber optic spectrometers, ka laulā spectral maʻamau ma waena o 200nm a me 2500nm. Ma muli o ke koi o ka hoʻonā kiʻekiʻe kiʻekiʻe, paʻakikī ke loaʻa i kahi ākea ākea ākea; I ka manawa like, ʻoi aku ka kiʻekiʻe o ke koi hoʻonā, ʻoi aku ka liʻiliʻi o ka luminous flux. No nā koi o ka hoʻonā haʻahaʻa a me ka laulā spectral ākea, 300 laina / mm grating ka koho maʻamau. Inā makemake ʻia kahi hoʻonā spectral kiʻekiʻe, hiki ke loaʻa iā ia ma ke koho ʻana i kahi pahu me nā laina 3600 / mm, a i ʻole ke koho ʻana i kahi mea ʻike me ka hoʻonā pixel ʻoi aku.

māwae

Hiki i ka ʻāpana haiki ke hoʻomaikaʻi i ka hoʻonā, akā ʻoi aku ka liʻiliʻi o ke kahe māmā; Ma ka ʻaoʻao ʻē aʻe, hiki i nā slits ākea ke hoʻonui i ka naʻau, akā ma ka uku o ka hoʻonā. Ma nā koi noi like ʻole, koho ʻia ka laulā ʻāpana kūpono e hoʻopaʻa i ka hopena hōʻike holoʻokoʻa.

ʻimi

ʻO ka meaʻike ma kekahi mauʻano e hoʻoholo ai i ka hoʻonā a me kaʻike o ka fiber optic spectrometer,ʻo ka māhele māmā o ka'āpana ma ka meaʻike ma ke kumu i kaupalenaʻia, ua māheleʻia i nā pixels liʻiliʻi he nui no ka hoʻonā kiʻekiʻe a iʻole i māheleʻia i nā pixels liʻiliʻi akā nui no kaʻike kiʻekiʻe. ʻO ka mea maʻamau, ʻoi aku ka maikaʻi o ka ʻike o ka mea ʻike CCD, no laila hiki iā ʻoe ke loaʻa i kahi hoʻonā maikaʻi me ka ʻole o ka naʻau. Ma muli o ke kiʻekiʻe o ka naʻau a me ka leo wela o InGaAs detector ma kahi kokoke i ka infrared, hiki ke hoʻomaikaʻi maikaʻi ʻia ka ratio signal-to-noise o ka ʻōnaehana ma o ka refrigeration.

kānana Optical

Ma muli o ka hopena multistage diffraction o ka spectrum pono'ī, hiki ke hoʻemi ʻia ke keakea o ka diffraction multistage me ka hoʻohana ʻana i ka kānana. ʻAʻole like me nā spectrometers maʻamau, ua uhi ʻia nā spectrometers fiber optic i ka mea ʻike, a pono e hoʻokomo ʻia kēia ʻāpana o ka hana ma kahi o ka hale hana. I ka manawa like, loaʻa i ka uhi ka hana o ka anti-reflection a hoʻomaikaʻi i ka ratio signal-to-noise o ka ʻōnaehana.

Hoʻoholo nui ʻia ka hana o ka spectrometer e ka spectral range, optical resolution and sensitivity. ʻO ka hoʻololi ʻana i kekahi o kēia mau ʻāpana e pili pinepine i ka hana o nā ʻāpana ʻē aʻe.

ʻO ka pahuhopu nui o ka spectrometer,ʻaʻole ia e hoʻonui i nā palena a pau i ka manawa o ka hanaʻana, akā, e hana i nā hōʻailona loea o ka spectrometer e hoʻokō i nā koi hana no nā noi likeʻole i kēia koho ākeaʻekolu. Hāʻawi kēia hoʻolālā i ka spectrometer e hōʻoluʻolu i nā mea kūʻai aku no ka hoʻihoʻi kiʻekiʻe me ka liʻiliʻi o ke kālā. ʻO ka nui o ka cube e pili ana i nā hōʻailona loea e pono ai ka spectrometer e hoʻokō, a ua pili kona nui i ka paʻakikī o ka spectrometer a me ke kumukūʻai o ka huahana spectrometer. Pono nā huahana Spectrometer e hoʻokō piha i nā palena ʻenehana i koi ʻia e nā mea kūʻai.

Laulā kikoʻī

Nā mea kikoʻīme ka la'ana kiko'ī li'ili'i e hā'awi mau i ka 'ike kiko'ī kiko'ī, a'o nā pae hi'ona nui ka laulā hi'ohi'ona. No laila, ʻo ka laulā spectral o ka spectrometer kekahi o nā ʻāpana koʻikoʻi e pono e wehewehe pono ʻia.

ʻO nā mea e pili ana i ka laulā spectral ka nui o ka grating a me ka detector, a ua koho ʻia ka grating a me ka detector e like me nā koi like ʻole.

ka naʻau

Ma ke kamaʻilio e pili ana i ka naʻau, he mea nui e hoʻokaʻawale i waena o ka naʻau i ka photometry (ka ikaika hōʻailona liʻiliʻi loa e hikispectrometerhiki ke ʻike) a me ka naʻau i ka stoichiometry (ka ʻokoʻa liʻiliʻi loa o ka absorption i hiki i kahi spectrometer ke ana).

a. ʻike kiʻi kiʻi

No nā noi e koi ana i nā spectrometers ʻike kiʻekiʻe, e like me ka fluorescence a me Raman, makemake mākou i nā SEK thermo-cooled optical fiber spectrometers me ka thermo-cooled 1024 pixel two-dimensional array CCD detectors, a me nā lens condensing detector, nā aniani gula, a me nā ʻāpana ākea ( 100μm a ʻoi aku paha). Hiki i kēia kŘkohu ke hoʻohana i nā manawa hoʻohui lōʻihi (mai ka 7 milliseconds a i ka 15 minuke) e hoʻomaikaʻi i ka ikaika o ka hōʻailona, ​​a hiki ke hoʻemi i ka walaʻau a hoʻomaikaʻi i ka laulā ikaika.

b. ʻIke Stoichiometric

I mea e ʻike ai i ʻelua mau waiwai o ka absorption rate me ka amplitude kokoke loa, ʻaʻole pono wale ka naʻau o ka mea ʻike, akā pono pū ka lākiō hōʻailona-a-noise. ʻO ka mea ʻike me ka lākiō hōʻailona kiʻekiʻe loa ʻo ia ka thermoelectric refrigerated 1024-pixel two-dimensional array CCD detector i ka SEK spectrometer me kahi hōʻailona-a-noise ratio o 1000:1. Hiki i ka awelika o nā kiʻi spectral he nui ke hoʻomaikaʻi i ka ratio signal-to-noise, a ʻo ka piʻi ʻana o ka helu awelika e hoʻonui i ka ratio signal-to-noise i ka wikiwiki o ke kumu huinahā, no ka laʻana, hiki i ka awelika o 100 mau manawa. e hoʻonui i ka lākiō hōʻailona-a-noise 10 manawa, a hiki i 10,000: 1.

Olelo Hooholo

ʻO ka hoʻonā ʻana o ka Optical kahi ʻāpana koʻikoʻi e ana i ka hiki ke hoʻokaʻawale ʻike. Inā makemake ʻoe i ka hoʻonā ʻike kiʻekiʻe loa, manaʻo mākou e koho ʻoe i kahi pākuʻi me nā laina 1200/mm a ʻoi aʻe paha, me kahi ʻāpana haiki a me kahi mea ʻike CCD 2048 a i ʻole 3648 pixel.