Name: Yb:KGW Crystal | Ytterbium-Doped Potassium Gadolinium Tungstate Crystal
Brand: Heeger Materials Inc
SKU: HM2871

Data sheet

Density	7.27 g/cm³
Materials	Yb:KGW Crystal
Melting Piont	1075 ℃
Molecular Formula	Yb:KGd(WO4)2

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Yb:KGW (Ytterbium-Doped Potassium Gadolinium Tungstate) Crystal is an excellent laser gain material with advantages over Nd-doped materials. Its broad emission range of 1023-1060 nm enables ultrashort pulse generation in the ps or fs range. The wide absorption band and high absorption at 980 nm allow efficient diode laser pumping. Compared to Yb:YAG Crystal, KGW offers a larger absorption cross-section, reducing the minimum pump intensity required for transparency in the quasi-two-level system. Heeger Materials provides high-quality Yb:KGW Crystal for advanced laser applications.

Yb:KGW Crystal | Ytterbium-Doped Potassium Gadolinium Tungstate Crystal

Yb:KGW Crystal Properties

Crystal Structure	Monoclinic
Point Group	C2/c
Cell Parameters	a=8.09 Å, b=10.43 Å, c=7.588 Å, β=94.4°
Refractive Index @ 1067 nm	ng=2.033, np=2.037, nm=1.986
Melting Point	1075 ℃
Mohs Hardness	5 Mohs
Density	7.27 g/cm³
Thermal Conductivity @ 373 K	K[100]=2.6 W/m/K, K[010]=3.8 W/m/K, K[001]=3.4 W/m/K
Thermal Expansion Coefficient @ 373 K	α[100]= 4×10⁻⁶ /K, α[010]= 1.6×10⁻⁶ /K, α[001]= 8.5×10⁻⁶ /K
Laser Wavelength	1023-1060 nm
Absorption Band	981 nm (FWHM 3.7 nm)
Fluorescence Lifetime	600 μs (5% doping)

Yb:KGW Crystal Specifications

Orientation	[010]
Standard Doping Concentration	Yb: 5 at.%
Maximum Length	50 mm
Dimensional Tolerances	Diameter Tolerance: ±0.1 mm
Dimensional Tolerances	Length Tolerance: ±0.5 mm
Surface Quality	20/10 reference MIL-PRF-13830B standard
Flatness	λ/6 @ 633 nm
Parallelism	20″
Perpendicularity	≤15′
Coating	AR-1030/980 nm, R<0.2% @ 1030 nm, R<0.5% @ 980 nm
Coating	Custom coating services are available

Yb:KGW Crystal Key Features

High absorption coefficient at 981 nm wavelength
Large stimulated emission cross-section
Low laser threshold
Extremely low quantum defect
Broad bandwidth polarized output @ 1023~1060 nm
High slope efficiency when diode-pumped (up to 60%)
High Yb doping concentration

Yb:KGW Crystal Applications

Ultrafast Lasers: Enable the generation of picosecond (ps) and femtosecond (fs) laser pulses.
Diode-Pumped Solid-State Lasers (DPSSLs): Efficiently absorb 980 nm pump radiation for high-power laser systems.
Industrial Material Processing: Used in precision cutting, drilling, and microfabrication.
Medical and Biomedical Applications: Supports laser-based treatments and imaging technologies.
Scientific Research: Ideal for nonlinear optics, spectroscopy, and high-intensity laser experiments.

Yb:KGW Crystal Packing And Shipping

Yb:KGW (Ytterbium-Doped Potassium Gadolinium Tungstate) Crystal will be securely packaged in sturdy containers with cushioning materials to prevent movement or damage during shipping. This careful packaging ensures that the product arrives in perfect condition, maintaining its high-quality standards throughout the delivery process.

Where to Buy Tb:KGW Crystal in Bulk?

Heeger Materials Inc., a professional supplier and manufacturer of high-quality Laser Crystals products including Yb:KGW (Ytterbium-Doped Potassium Gadolinium Tungstate) Crystal, leverages extensive expertise in supply and export to offer competitive prices. We provide customized solutions to meet specific requirements, ensuring exceptional quality and customer satisfaction.

Heeger Materials Inc. was established in 2016 in Colorado, USA. We specialize in premium-grade metals, alloys, ceramics, powders, and other materials catering to research, development, and large-scale industrial production in scientific and industrial sectors.

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