JGS3 Quartz Glass: Advanced Infrared-Optimised Fused Silica

JGS3 quartz glass is an advanced grade of fused silica designed for optical systems requiring broad spectral transmission across the ultraviolet (UV), visible, and infrared (IR) regions. Combining wide-band transparency with superior thermal and chemical stability, it’s the material of choice for high-performance optical and scientific applications.

Broad Spectral Transmission

• Outstanding transparency across UV, visible, and IR wavelengths.
• Free from absorption bands in the visible spectrum, ensuring optical clarity and colour fidelity.
• Exhibits mild absorption bands in the 185–250 nm range typical of fused silica materials.

Optical Excellence

• High transmission in both deep-UV (DUV) and infrared (IR) regions.
• Exceptional homogeneity and minimal birefringence for precision optical components.
• Stable optical performance under thermal and mechanical stress.

Cost & Value Positioning

• More expensive than silicon-based optics.
• Slightly less costly than advanced materials such as Calcium Fluoride (CaF₂) or Zinc Sulphide (ZnS) multispectral grade.
• Offers an excellent balance of cost, optical range, and durability for multi-spectral systems.

Applications

• Broadband optical and photonic systems
• Infrared imaging and analytical instruments
• Laser optics and beam delivery systems
• Optical filters and calibration windows
• Semiconductor processing equipment
• Spectro-electrochemical measurement systems
• High-temperature and harsh-environment applications

Equivalent Materials

The following material is recognised as an equivalent to JGS3 synthetic quartz silica, sharing comparable purity, structure, and spectral properties:

• Heraeus: Suprasil 300

These equivalent materials provide near-identical optical behaviour — combining high purity, UV transparency, and infrared stability — making JGS3 ideal for multi-spectral optical systems.

John Moncrieff Ltd supplies, machines, and polishes JGS3 and comparable grades, enabling integration into advanced optical, analytical, and industrial systems requiring precision across the full electromagnetic spectrum.