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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 (Si)
Chemical Formula – Si
Refractive Index (@ 5.0 µm) – 3.42
Useful Wavelength Range
(Transmission) – 1.06μm to 6.7μm
& 30μm to FIR
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Due to their potential strategic high value, export of RMI products and related technical data may be subject to U.S. or other export licensing requirements.
Please consult your export control administrator or contact RMI for more information. |
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