Ze Windows–as Long-wave Pass Filters

Lub refractive index ntawm germanium cov khoom yog siab heev (li 4.0 nyob rau hauv lub 2-14μm band). Thaum siv los ua lub qhov rais iav, nws tuaj yeem coated raws li qhov xav tau los txhim kho kev xa tawm ntawm cov khoom sib txuas. Ntxiv mus, cov khoom sib kis ntawm germanium yog qhov tsis tshua muaj siab rau kev hloov pauv ntawm qhov kub thiab txias (qhov kev xa tawm qis dua nrog qhov nce ntawm qhov kub). Yog li ntawd, lawv tsuas yog siv tau qis dua 100 ° C. Qhov ntom ntawm germanium (5.33 g / cm3) yuav tsum raug txiav txim siab hauv kev tsim cov tshuab nrog cov kev txwv hnyav. Germanium windows muaj ntau yam kis tau tus mob (2-16μm) thiab opaque nyob rau hauv qhov pom spectral ntau yam, ua rau lawv tshwj xeeb tshaj yog haum rau infrared laser daim ntaub ntawv. Germanium muaj Knoop hardness ntawm 780, txog ob npaug ntawm qhov hardness ntawm magnesium fluoride, uas ua rau nws zoo dua rau kev siv hauv IR teb ntawm kev hloov kho qhov muag.
Daim ntawv thov: Germanium lo ntsiab muag yog siv nyob rau hauv infrared thermometers, infrared thermal imagers, Co2 lasers thiab lwm yam khoom siv. Peb qhov zoo: Jiite tsim cov germanium lo ntsiab muag, siv qib kho qhov muag ib leeg siv lead ua germanium ua cov khoom siv hauv paus, siv cov tshuab polishing tshiab los ua cov txheej txheem, qhov chaw muaj qhov siab heev, thiab ob sab ntawm lub lens germanium yuav coated nrog 8-14μm los tiv thaiv. -reflection txheej, tuaj yeem txo qhov kev xav ntawm lub substrate, thiab kev xa tawm ntawm cov txheej tiv thaiv kev cuam tshuam hauv kev ua haujlwm band ncav cuag ntau dua 95 ● Khoom siv: Ge (germanium)