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Nd³⁺:KGd(WO₄)₂ (Nd:KGW) is a high‑performance laser crystal material. The crystal features a low pump threshold and a large stimulated emission cross section — these two characteristics directly provide critical support for efficient laser startup and high‑power output, reducing the initial energy demand of the laser system on the pump source while improving energy conversion efficiency. This lays the foundation for its large‑scale application in commercial laser equipment.
Fuzhou Jingzhi Optoelectronics Technology Co., Ltd. provides high‑performance neodymium‑doped potassium gadolinium tungstate crystals (Nd:KGW), suitable for various laser architectures. The crystals feature a relatively wide absorption bandwidth, high emission cross section, and good thermal stability. We offer customization of doping concentration, cutting orientation, and optical coatings to meet the requirements of diverse application scenarios. Jingzhi Optoelectronics strictly controls crystal quality to help laser systems achieve superior performance.
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Property
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Value
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Remarks
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Chemical Formula
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Nd³⁺:KGd(WO₄)₂, Nd:KGW
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Crystal Structure
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Monoclinic
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Lattice Parameters
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a=10.63 Å, b=10.34 Å, c=7.56 Å, β=130.5°
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Refractive Index
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n₉≈2.03, nₚ≈1.99, nₘ≈2.02 (test wavelength 1064 nm, custom wavelengths available)
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1060 nm
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Mohs Hardness
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4–5
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Thermal Conductivity
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Kₐ≈2.5 W/m·K, Kᵦ≈3.7 W/m·K, K𝒸≈3.3 W/m·K
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373 K
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Melting Point
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1075 °C
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Density
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7.27 g/cm³
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Thermal Expansion Coefficients
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αₐ≈4×10⁻⁶/°C, αᵦ≈3.6×10⁻⁶/°C, α𝒸≈8.5×10⁻⁶/°C
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373 K
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Absorption Bandwidth
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808 nm (FWHM 12 nm)
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Item
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Specification
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Doping Concentration
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0.5% – 3.0 at.%
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Maximum Length
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40 mm
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Dimensional Tolerance
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Diameter tolerance: ±0.05 mm, custom sizes accepted; Length tolerance: ±0.1 mm, custom sizes accepted
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Surface Finish
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20/10 (per MIL-PRF-13830B standard)
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Flatness
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≤λ/6 @ 633 nm
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Parallelism
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20 arcsec
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Perpendicularity
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≤15 arcmin
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Chamfer
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≤0.2 mm × 45°
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Edge Chipping
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≤0.1 mm
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Coatin
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Custom coating design service available
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Quality Guarantee Period
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1 year (under normal use)
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