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 are the properties of silica glass?
Silica glass has high optical transmission in a wide wavelength range, high heat resistivity and high radiation resistivity. Most of these properties are related to the “hardness” of the silica glass network which is controlled by terminal structures such as SiOH and SiCl.
Does silica absorb UV?
It is well known that absorption of UV light in the UV-C raises fused silica from the ground state to several excited states. At room temperature, most of the molecules are in the lowest vibrational level of the ground state (v = 0) and transitions to higher levels will take place with the absorption of UV light.
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.
What is the difference between fused silica and quartz?
Fused Silica and Quartz are both extremely pure materials featuring very low thermal expansion and excellent optical qualities. The main difference between the two is that Fused Silica is composed of a non-crystalline silica glass, while Quartz is made from crystalline silica.
What is IR grade?
Fused silica is a common glass type used in the optics industry to manufacture optical components such as lenses, windows, mirrors, prisms, and beamsplitters. Fused silica is often a preferred material for precision optics due to its consistent and repeatable optical performance.
What are the physical properties of glass?
The main characteristics of glass are transparency, heat resistance, pressure and breakage resistance and chemical resistance.
What are chemical properties of glass?
There is no single chemical composition that characterizes all glass. Typical glass contains formers, fluxes, and stabilizers. Formers make up the largest percentage of the mixture to be melted. In typical soda-lime-silica glass the former is silica (Silicon dioxide) in the form of sand.
Does clear silicone block UV?
However, silicone coatings do not break down due to UV exposure. Despite this being one of the most common objections we hear when discussing silicone, it’s not true. Thanks to its chemical formulation, silicone is actually extremely UV stable.
Why is silica good for Windows?
Such durability is useful when fused silica is employed as a window in harsh environments or when used as a laboratory tool in contact with caustic chemicals. This resistance also protects the integrity of an optic’s surface polish assisting both the flatness and transmitted wavefront distortion.
What is fused silica powder?
Fused Silica is made from high purity silica, using unique fusion technology to ensure the highest quality. Fused Silica is inert, has excellent chemical stability, and has extremely low electrical conductivity.
Is quartz sand the same as silica sand?
Silica sand, also known as quartz sand, white sand, or industrial sand, is made up of two main elements: silica and oxygen. Specifically, silica sand is made up of silicon dioxide (SiO2). Although quartz is often white or colourless, it can come in a wide range of shades.