Pyrex® – Corning Code 7740
Fused Silica
UV Grade Fused Silica is synthetic amorphous silicon dioxide of extremely high purity. This non-crystalline, colorless silica glass combines a very low thermal expansion coefficient with good optical qualities, and excellent transmittance in the ultraviolet region down to 195 nm. Transmission and homogeneity exceed those of crystalline quartz without the problems of orientation and temperature instability inherent in the crystalline form. Fused silica is ideally used with high-energy lasers due to its high energy damage threshold. UV fused silica also has excellent transmission in the visible and infrared region up to approximately 2.1 µm, and a low content of inclusions with high refractive index homogeneity. Fused silica is used for both transmissive and reflective optics, especially where high laser damage threshold is required.
BK 7 Glass
BK 7 is one of the most common borosilicate crown glasses used for visible and near infrared optics. Its high homogeneity, low bubble and inclusion content, and straightforward manufacturability make it a good choice for transmissive optics. BK7 is also relatively hard and shows good scratch resistance. The transmission range for BK 7 is 380–2100 nm. It is not recommended for temperature sensitive applications, such as precision mirrors.
Multi-Transmission – SF 8, SF10, Pyrex®
Multi-Transmission
UV Grade Fused Silica, IR grade Fused Silica, Optical Crown Glass, Optical Grade Fused Silica
Multi-Transmission
Fused Silica, Zinc Selenide, Germanium, Calcium Fluoride, AMTIR 1
Multi-Transmission
Sodium Chloride, Zinc Sulfide, Magnesium Fluoride, Sapphire
Reflectance
SP 8, SP 10, Pyrex®
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