Quartz iav yog qhov khoom siv yooj yim rau kev tsim cov duab fiber ntau vim tias nws muaj qhov ua tau zoo UV kis thiab qhov kev nqus qis heev ntawm cov teeb pom kev pom thiab ze-teeb pom kev zoo. Dhau li ntawm thermal expansion coefficient ntawm quartz iav yog qhov tsawg heev. Nws cov tshuaj lom neeg ruaj khov yog qhov zoo, thiab cov npuas, kab txaij, sib txawv thiab birefringence piv rau cov ntawm cov iav zoo li qub. Nws yog qhov khoom siv kho qhov muag zoo tshaj plaws nyob hauv qhov chaw kub ntxhov.
Kev faib tawm los ntawm cov khoom siv kho qhov muag:
1. (deb UV Optical Quartz iav) JGS1
Nws yog kho qhov muag quartz iav ua los ntawm cov hluavtaws zeb nrog SiCl 4 raws li cov khoom siv raw thiab melted los ntawm siab purity oxyhydrogen nplaim taws. Yog li nws muaj cov kuab hydroxyl ntau (ncig 2000 ppm) thiab muaj kev sib kis UV kis tau zoo. Tshwj xeeb hauv ntu luv luv UV cheeb tsam, nws txoj kev sib kis tau zoo dua li txhua yam ntawm cov iav. Qhov kis tau tus mob UV ntawm 185nm tuaj yeem ncav cuag 90% lossis ntau dua. Cov iav hluavtaws iav tau txais cov zog zoo tshaj ntawm cov ncov ntawm 2730 nm thiab tsis muaj cov qauv hauv feem. Nws yog cov khoom siv kho qhov muag zoo tshaj plaws nyob rau thaj tsam ntawm 185-2500nm.
2. (UV Optical Quartz iav) JGS2
Nws yog quartz iav tsim los ntawm cov roj ua kom zoo dua qub nrog siv lead ua raw li cov khoom siv, muaj ntau ntau ntawm PPM hlau tsis zoo. Muaj cov nqus peaks (cov ntsiab lus hydroxyl 100-200ppm) ntawm 2730nm, nrog cov kab txaij thiab tawg. Nws yog cov khoom zoo nyob rau hauv nthwv dej ntu ntawm 220-2500 nm.
3. (Infrared Optical Quartz iav) JGS3
Nws yog hom quartz iav uas tsim los ntawm lub tshuab nqus tsev siab lub tshuab ua hluav taws xob (piv txwv li electrofusion txoj kev) nrog siv lead ua los yog siab-quartz xuab zeb li cov khoom siv raw uas muaj ntau txhiab PPM hlau tsis zoo. Tab sis nws muaj cov npuas me me, cov qauv tsim thiab cov txhuam, yuav luag tsis muaj OH, thiab muaj qhov sib kis loj infrared. Nws txoj kev sib kis tshaj 85%. Nws cov npe thov ntau yog 260-3500 nm khoom siv kho qhov muag.
Kuj tseem muaj ib yam ntawm txhua nthwv dej band kho qhov muag quartz iav nyob hauv lub ntiaj teb. Daim ntawv thov pawg yog 180-4000nm, thiab nws yog tsim los ntawm ntshav tshuaj theem deposition (tsis muaj dej thiab H2). Cov khoom siv raw yog SiCl4 hauv qhov siab huv. Ntxiv me me ntawm TiO2 tuaj yeem lim tawm cov xim ultraviolet ntawm 220nm, uas yog hu ua ozone dawb quartz iav. Vim tias ultraviolet lub teeb hauv qab 220 nm tuaj yeem hloov pauv oxygen hauv huab cua mus rau hauv ozone. Yog tias ib qho me me ntawm titanium, europium thiab lwm yam tau ntxiv rau hauv quartz iav, nthwv dej luv hauv qab 340nm tuaj yeem lim tawm. Siv nws los ua lub teeb hluav taws xob muaj cov kev saib xyuas kev noj qab haus huv rau tib neeg daim tawv nqaij. Cov hom iav no tuaj yeem ua npuas pub dawb. Nws muaj cov kab hluav taws xob ultraviolet zoo heev, tshwj xeeb tshaj yog nyob rau thaj tsam luv luv ultraviolet, uas tau zoo tshaj txhua lub tsom iav. Cov transmittance ntawm 185 nm yog 85%. Nws yog cov khoom siv kho qhov muag zoo tshaj plaws hauv 185-2500nm nthwv dej ntawm lub teeb. Vim tias hom iav no muaj OH pab pawg, nws txoj kev sib kis infrared yog qhov tsis zoo, tshwj xeeb tshaj yog muaj qhov loj nqus lub ncov ze ntawm 2700nm.
Piv nrog iav silicate zoo tib yam, pob tshab iav quartz muaj kev sib kis tau zoo hauv kev yoj tag nrho. Hauv cheeb tsam infrared, lub teeb kis hluav taws xob loj dua li ntawm cov iav dog dig, thiab hauv thaj chaw pom, kev sib kis ntawm quartz iav tseem ntau dua. Nyob rau hauv cheeb tsam ultraviolet, tshwj xeeb tshaj yog nyob rau thaj tsam luv luv ultraviolet, qhov kev xa xov kis tau zoo dua lwm yam ntawm cov iav. Qhov ntsuas phoo hluav taws xob cuam tshuam nrog peb yam: cuam tshuam, tawg thiab nqus. Qhov cuam tshuam ntawm quartz iav feem ntau 8%, thaj tsam ultraviolet muaj qhov loj dua, thiab thaj chaw infrared me dua. Yog li ntawd, qhov sib kis ntawm quartz iav feem ntau tsis tshaj 92%. Qhov tawg ntawm quartz iav yog me me thiab tuaj yeem tsis quav ntsej. Txoj kev nqus spectral yog ze rau cov ntsiab lus tsis muaj zog ntawm quartz iav thiab cov txheej txheem ntau lawm. Qhov hloov pauv hauv pawg xa tawm qis dua 200 nm sawv cev tus nqi ntawm cov ntsiab lus hlau tsis huv. Qhov nqus hauv 240 nm sawv cev tus nqi ntawm cov qauv anoxic. Qhov nqus hauv cov xov tooj pom tau tshwm sim los ntawm qhov muaj qhov hloov ntawm cov hlau ions, thiab qhov nqus hauv 2730 nm yog qhov nqus ntawm lub zog ntawm hydroxyl, uas tuaj yeem siv los xam tus nqi hydroxyl.
