High UV Transmission High Purity 

Calcium Fluoride (CaF2) Windows

BK7 Optical Glass Windows are crafted from high-purity BK7 borosilicate glass, offering excellent optical uniformity and low dispersion with stable transmittance across 350–2000nm. They feature high abrasion resistance and thermal stability, making them ideal for laser systems, spectrometers, and imaging devices. Supporting custom coating solutions, these windows meet specific optical requirements, ensuring reliable performance in demanding applications while maintaining consistent quality across various operational conditions.

Fused Silica Windows are crafted from high-purity synthetic amorphous silica, offering broadband transmission from UV (160nm) to IR (3500nm). Withstanding 1050℃ and featuring a low thermal expansion coefficient of 0.55×10⁻⁶/K, they provide λ/10 surface accuracy, ≤10 arc-second parallelism, and over 85% clear aperture. Customizable sizes and shapes are available, along with coating services to minimize reflection loss. Ideal for laser protection, spectroscopy, semiconductor lithography, and vacuum systems, options include special forms, precision drilling, and high-power laser optimization.

Borosilicate (Pyrex) windows are crafted from premium borosilicate glass, offering low thermal expansion, high-temperature resistance, and exceptional chemical durability. Their thermal stability matches silicon materials, making them ideal for high-temperature and precision optical applications. With broadband transmission from UV to near-IR, they withstand continuous operation at 450℃ and rapid thermal shocks. Chemically resistant to acids, alkalis, and organic solvents, they are widely used in semiconductor lithography, medical devices, laser protection, vacuum systems, and optical instruments. Customizable sizes, shapes, and coatings are available to meet diverse industrial requirements.

Germanium (Ge) is widely used in far infrared wavelength,it is transparent from 2000nm to 17000nm.Germanium also has higher refractive index about 4 at 10.6 micron.Germanium is very popular in FLIR and imaging applications.Ge windows and lenses can be manufactured by MT-Optics,Inc.

Germanium Windows are made from Germanium material, which has transparent range from 2 to 17 micron. MT-Optics,Inc. can kindly process this Ge as windows, mirrors, lenses etc.

Sapphire is a single crystal aluminum oxide (Al2O3).Its Mohs hardness is 9,it is one of the hardest materials.Sapphire has good mechanical strength,and it is also transparent from visible to IR spectrum.So,it is always used as window material where scratch resistance is required.

Magnesium Fluoride (MgF2) is a tetragonal positive birefringent crystal.MgF2 has good chemical,mechanical and thermal characteristics compared with CaF2.Due to its high vacuum UV transmission and high damage threshold,MgF2 is usually used in VUV andexcimer laser windows,polarizers,lenses and etc.

Sapphire Window is an optical component crafted from sapphire material. It boasts a transparent range of 180 - 4500 nm, enabling transmission of light from the ultraviolet to the infrared spectrum. At 1000 nm, its refractive index is 1.755, contributing to its distinctive optical performance. Sapphire’s inherent hardness and thermal stability further enhance its utility in demanding environments.

MgF₂ (Magnesium Fluoride) Window is an optical component fabricated from magnesium fluoride, a material renowned for its broad transparent range spanning from 120 to 7000 nm. This extensive range allows transmission of light from the ultraviolet to the infrared spectrum. At 7000 nm, it exhibits a refractive index of 1.376, contributing to its unique optical properties.

Borofloat Windows are made from Schott’s micro-float borosilicate glass, offering exceptional high-temperature resistance, chemical durability, and optical performance. With a low thermal expansion coefficient compatible with silicon wafers, they are ideal for high-temperature and precision optical applications. The glass features superior flatness, broadband transmission from UV to near-IR, and withstands continuous operation at 450℃ and rapid thermal shocks. Chemically stable against acids, alkalis, and organic solvents, they are widely used in semiconductor lithography, medical devices, laser protection, vacuum systems, and optical instruments. Customizable sizes, shapes, and coatings are available to meet diverse industrial requirements.

Brewster window is uncoated substrate used in an optical system at Brewster Angle. It is used to separate the S polarization from the P polarization. Placed at Brewster's Angle the P-Polarization portion of the light will pass through the window 100%, while the S Polarization portion will be 20% reflected. MT-Optics,Inc. offer brewster window made from BK7 and UV Fuses Silica.

Calcium Fluoride (CaF2) is a tetragonal positive birefringent crystal.MgF2 has good chemical,mechanical and thermal characteristics compared with CaF2.Due to its high vacuum UV transmission and high damage threshold,MgF2 is usually used in VUV andexcimer laser windows,polarizers, lenses and etc.

CaF2 Windows are made from Calcium Fluoride material, which has transparent range from 170-7800nm. The refractive index is 1.399 at 5000nm. It has little hygroscopic susceptibility and high thermal expansion coefficient. CaF2 Windows are relatively soft and somewhat hygroscopic so polishing, coating and handling are more critical than UV Fused Silica windows.

Zinc selenide (ZnSe) materials exhibit excellent light transmittance across a broad wavelength range (0.5μm to 22μm). They are commonly used as substrate materials for mirrors and beam splitters in high-power CO₂ laser systems. Additionally, their superior refractive index uniformity and consistency make them ideal for applications such as windows and lenses in thermal imaging systems, medical devices, industrial thermal radiation meters, and infrared spectrometers.

Zinc sulfide (ZnS) exists in two material forms: a white multispectral material and a yellow virgin material. Both are chemically inert, featuring high purity, insolubility in water, moderate density, and ease of processing. Due to its broad transmission wavelength range (500–10000 nm), zinc sulfide (ZnS) is widely used in manufacturing infrared windows, domes, and infrared optical components.