What is UV grade fused silica?

What is UV grade fused silica?

UV Grade Fused Silica is synthetic amorphous silicon dioxide of extremely high purity providing maximum transmission from 195 to 2100 nm. This non-crystalline, colorless silica glass combines a very low thermal expansion coefficient with good optical qualities, and excellent transmittance in the ultraviolet region.

What is the RI factor for silica glass?

In SiO2, for example, in order of increasing density, nr,glass = 1.46, nr,tridymite = 1.47, nr,cristobalite = 1.49, and nr,quartz = 1.55.

What is the refractive index of fused quartz?

Its quite high Abbe Number of 67.8 makes it among the lowest dispersion glasses at visible wavelengths, as well as having an exceptionally low refractive index in the visible (nd = 1.4585).

Is fused silica the same as quartz?

The terms “fused silica” and “fused quartz” are often used interchangeably. More accurately, “fused quartz” refers to an amorphous solid formed by melting naturally-occurring quartz. So, while fused silica is ostensibly pure SiO2, fused quartz contains impurities depending on the quartz that was used.

Does silica absorb UV?

The high absorption of UV grade used silica around 2µm will lead to heat generation and potentially cause damage. However, IR grade fused silica optical components often have a higher cost and lower availability.

Is BK7 birefringent?

Figure 4.17 A block of N-BK7 shows stress birefringence reduction due to cutting it down to smaller-sized pieces.

What is the refractive index of fused silica?

Its refractive index varies from 1.55 to 1.40 (for its transparent range: 160nm to 3000nm). Because fused silica is optically stable and consistent, many use it as a reference or standard for spectroscopic measurements. The details of its refractive index temperature dependence are also well studied.

What is the refractive index of flint glass?

Index of Refraction of Glass, Flint

What is fused silica used for?

Fused silica and quartz are used in the manufacture of many optical parts—such as lenses, mirrors, UV and IR transmitting optics, and metrology components—due to their ability to transmit light in the visible, ultraviolet, and infrared range. Semiconductors.

Is fused silica conductive?

Fused Silica is an excellent thermal insulator. Its thermal conductivity is only 1.38W/mºK (measured at 25ºC), which is one of the lowest for any solid.

What is 96% silica glass used for?

What is 96% silica glass used for? Explanation: Ninety-six-percent silica glasses are similar to fused silica, but are easier to fabricate and have a higher coefficient of expansion. These can be used as heat shields in space vehicles and other chemical glassware.

Is BK7 fused silica?

It has excellent resistance to non-fluorinated acids, solvents and plasmas. Heraeus and Nikon both produce extremely high grade (pure) Fused Silica glasses that exhibit excellent ultraviolet and infrared performance. Bk7 is a barium borosilicate glass known for its high transmission and clean, clear appearance.