Transmission Curves: BK7, Quartz, Ge, Si

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Monday, 06 February 2012

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(1) Magnesium Fluoride (MgF₂) Calcium Fluoride (CaF₂) UV-grade Fused Silica (SiO₂) IR-grade Fused Silica (SiO₂)
(2) BK7 (BK7) Crystal Quartz (SiO₂) Germanium (Ge) Silicon (Si)
(3) Barium Fluoride (BaF₂) Zinc Selenide (ZnSe) AMTIR (GeAsSe) Gallium Arsenide (GaAs)
(4) Zinc Sulfide (ZnS) Cleartran (ZnS) Sapphire (Al₂O₃) Spinel (MgAl₂O₄)

Optical Materials Selection Guide

BK7 (BK7)

Chemical Formula – BK7
Refractive Index (@ 588nm) – 1.51
Useful Wavelength Range
(Transmission) – 320nm to 2.3μm

Crystal Quartz (SiO₂)

Chemical Formula – SiO₂
Refractive Index (@ .99 µm) – 1.54
Useful Wavelength Range
(Transmission) – 200nm to 2.4μm

Germanium (Ge)

Chemical Formula – Ge
Refractive Index (@ 4.87 µm) – 4.02
Useful Wavelength Range
(Transmission) – 2.0μm to 17.0μm

Silicon

Silicon (Si)

Chemical Formula – Si

Refractive Index (@ 5.0 µm) – 3.42

Useful Wavelength Range
(Transmission) – 1.06μm to 6.7μm

& 30μm to FIR

Call 303-664-5000 to discuss your optical requirements
Toll Free: 1-866-678-4270 Fax: 303-664-5001 Email: Sales@RMIco.com
Rocky Mountain Instrument Co. • 106 Laser Dr., Lafayette, CO • 80026 • USA

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