B2B marketplace · Technology-grade grown diamond
B2B marketplace · Technology-grade grown diamond
Diamond windows transmit multi-kilowatt and megawatt laser beams without warping, burning or cracking.
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In ultra-high-power optical and laser systems, tech-grade synthetic diamond functions as transmissive optical windows, output couplers, beam splitters, laser exit optics, and Attenuated Total Reflectance (ATR) prism elements. It is deployed in extreme-power fiber lasers, carbon dioxide (CO2) industrial cutting lasers, EUV lithography source optics, plasma discharge windows, and directed-energy optical assemblies. Integrated at critical beam output interfaces, diamond windows transmit multi-kilowatt and megawatt optical beams without warping, burning, or cracking under intense photon density, protecting delicate interior optical cavity components while maintaining laser beam profile integrity.
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Diamond provides the ultimate optical transmission solution because it combines the broadest spectral transmission window of any solid material (stretching from deep ultraviolet through the far-infrared, 220 nm to > 100 µm) with unmatched physical durability. Conventional optical materials like zinc selenide, germanium, or fused silica suffer from thermal lensing, optical distortion, and eventual catastrophic laser damage under high optical power. Diamond’s ultra-high thermal conductivity rapidly dissipates absorbed optical energy, while its low coefficient of thermal expansion, high mechanical strength, and exceptional laser damage threshold eliminate phase distortion and beam degradation, ensuring stable laser performance across extreme operating parameters.
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High-power optical applications require specialized Optical-Grade Chemical Vapor Deposition (CVD) diamond synthesized in either polycrystalline (pCVD) or single-crystal (scCVD) forms. Optical-grade pCVD diamond features ultra-low bulk optical absorption (α < 0.05 cm−1 at 10.6 µm and low NIR scattering) with window diameters produced up to 100–150 mm for large-aperture laser systems. For diffraction-limited laser optics requiring negligible scatter and zero grain-boundary interference, single-crystal optical CVD diamond is used. Both forms require ultra-precision optical polishing to achieve sub-nanometer surface roughness (Ra < 0.5 nm) and high surface flatness (λ/10), frequently paired with anti-reflective (AR) thin-film coatings or etched motheye nanostructures to maximize transmissive throughput.
Key figure
220 nm to > 100 µm
The broadest spectral transmission window of any solid material, from deep ultraviolet to far-infrared
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Applications
An ultra-wide bandgap semiconductor for higher voltages, faster switching and less energy loss.
Non-toxic nanodiamonds for bio-imaging, targeted drug delivery and long-term cell tracking.
Boron-doped diamond electrodes break down persistent pollutants, including PFAS, into CO₂ and water.
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