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GoPhotonics presents a comprehensive portfolio of high-performance optical windows from leading manufacturers that offer superior protection and transmission for advanced optical and photonic systems. Designed for exceptional surface quality, high transmission, and durability under demanding environmental conditions, these optical windows ensure minimal wavefront distortion and precise optical integrity across ultraviolet (UV), visible, and infrared (IR) spectral regions.

Engineered from premium substrates such as UV Fused Silica, Sapphire, BK7, and other advanced optical materials, the portfolio includes broadband, laser-grade, and custom-coated windows that support high-power laser, imaging, spectroscopy, and metrology applications. With optimized coatings to minimize reflection losses and protect sensitive components, these windows deliver reliable performance in both research and industrial environments.

34-601 – UV Fused Silica Window for Broadband Transmission

The 34-601 from Edmund Optics is a UV Fused Silica Optical Window designed for broadband operation from 200 nm to 2.1 µm. Featuring high chemical resistance and superior thermal stability, it offers greater than 90% transmission across a wide spectral range. With exceptional surface flatness and parallelism, this window minimizes beam deviation and optical aberrations, making it ideal for UV imaging, spectroscopy, and laser systems. Its low autofluorescence and high laser damage threshold further ensure precise, stable performance in demanding optical setups.

MSLW050/020M – Sapphire Window for Harsh Environment Applications

The MSLW050/020M from Meller Optics is a Sapphire Window with a C-plane orientation, providing outstanding mechanical strength and scratch resistance. With a diameter of 0.5 inches and 2 mm thickness, it offers superior optical clarity and a surface quality of 10-5 S-D (scratch-dig). This window exhibits a transmitted wavefront error of λ/10, ensuring distortion-free imaging. Designed for harsh environments and high-pressure systems, it is ideal for thermal imaging, aerospace optics, and protective viewing ports.

PP-UVFS-25.4-6.35-AR784-AR784 – UV Fused Silica Window with Dual AR Coating

The PP-UVFS-25.4-6.35-AR784-AR784 from OPTOMAN is a UV-grade fused silica window featuring dual AR784 anti-reflection coatings on both surfaces. Optimized for ultrafast and high-power laser applications, it provides high transmission and low reflectance in the visible and near-infrared spectrum. Its excellent surface flatness (λ/10) and low wavefront distortion ensure stable beam propagation, while the high laser damage threshold makes it a preferred choice for laser machining, interferometry, and metrology systems.

WDF5002 – BK7 Protective Window for Optical Instrumentation

The WDF5002 from Knight Optical (UK) Ltd is a BK7 optical window designed for use in general optical and photonic instrumentation. It offers broadband transmission across the visible and near-infrared regions with minimal reflection losses. Manufactured with tight thickness and surface flatness tolerances, this window maintains excellent optical performance for camera systems, imaging sensors, and analytical instruments. Its robust build and polished surfaces ensure long-term reliability in laboratory and OEM environments.

WW70530-E3 – Fused Silica Window with Broadband AR Coating

The WW70530-E3 from Thorlabs is a broadband anti-reflection (AR) coated fused silica window optimized for 350 nm - 700 nm operation. It offers greater than 98% transmission in the visible range with minimal wavefront error and surface flatness of λ/10. Designed for laser and imaging systems, it provides reliable optical isolation while maintaining high clarity. The durable coating and precise optical quality make it ideal for research optics, interferometric setups, and optical enclosures.

With its curated selection of sapphire, fused silica, and BK7 windows, GoPhotonics delivers precision optical components that balance durability, transparency, and coating performance. These optical windows are engineered to protect optical assemblies while preserving beam integrity, making them indispensable in laser systems, imaging devices, spectroscopy setups, and aerospace optics.

By combining high substrate purity, advanced thin-film coatings, and stringent manufacturing tolerances, the optical windows featured on GoPhotonics offer consistent, distortion-free, and long-lasting performance across industrial, defense, and scientific photonics applications.

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