SQ Fused Silica is a premium material specifically engineered for the production of optical and photonic devices. It plays a crucial role in the fiber optic, semiconductor, and display technology sectors, in addition to various optical and laser applications. This material is renowned for being particularly free of inclusions and bubbles, which contributes to its excellent optical and physical properties. These properties include superior laser durability, refractive index homogeneity, thermal stability, and resistance to temperature shocks. Additionally, SQ Fused Silica exhibits low stress birefringence and minimal thermal expansion coefficients, making it an ideal choice for high-precision optical applications.

One of the standout features of SQ Fused Silica is its high OH and H2 content, which results in extremely low fluorescence. This characteristic ensures high stability under intense UV and laser radiation, making it a preferred material for high-energy applications. The material's unique composition and processing allow it to withstand demanding conditions while maintaining its integrity and performance, thus catering to the needs of advanced optical systems.

LEONI offers SQ Fused Silica in several forms, including ingots and semifinished products such as round discs, rods, plates, and blocks. Available in five distinct quality grades, these offerings are tailored to meet the specific needs of customers through meticulous measuring and selection procedures. This customization ensures that the material can be effectively used across a broad optical application range, from deep ultraviolet (DUV) to near-infrared (NIR) wavelengths. Each quality grade, from SQ0 to SQT, is designed to address specific requirements, whether for high-precision optical elements or technical applications.

In particular, the Excimergrade Fused Silica, available as SQ1 or SQ0, provides excellent transmission at 193 nm and 248 nm wavelengths. This grade is characterized by an exceptionally low level of laser-induced fluorescence (LIF), making it highly suitable for excimer laser applications. With its robust properties and versatile applications, SQ Fused Silica stands out as a critical material for innovators and manufacturers in the optics and photonics industries.