Yb:KGW Single Crystal | Ultrafast Laser Gain Medium

Yb:KGW (Ytterbium-doped Potassium Gadolinium Tungstate) Single Crystals

Yb:KGW (Yb³⁺:KGd(WO₄)₂) is a high-performance ytterbium-doped laser crystal widely used in ultrafast, high-power, and high-efficiency solid-state laser systems. It offers a broad emission bandwidth, high absorption cross-section, and excellent thermal properties, making it an ideal gain medium for femtosecond and picosecond lasers.

Compared with Yb:YAG, Yb:KGW provides broader gain bandwidth, enabling shorter pulse generation and superior wavelength tunability. Its strong absorption near ~980 nm diode pumping allows efficient direct diode pumping with reduced thermal load.

Yb:KGW crystals are extensively used in ultrafast oscillators, regenerative amplifiers, chirped-pulse amplification (CPA) systems, and advanced scientific laser platforms. Precision crystal growth and optical-grade polishing ensure low scattering loss and stable laser performance.

We supply high-quality Yb:KGW single crystals with controlled doping concentration, crystallographic orientation, and optional AR coatings to support both research laboratories and OEM laser manufacturers.

Key Features

• Broad emission bandwidth for ultrafast lasers
• High absorption cross-section at ~980 nm
• Suitable for femtosecond and picosecond pulse generation
• Efficient diode pumping with low thermal load
• Excellent optical and thermal stability
• Available in multiple cuts and custom dimensions

 Typical Applications

• Femtosecond and picosecond laser oscillators
• Regenerative and multi-pass amplifiers
• Chirped-pulse amplification (CPA) systems
• Ultrafast spectroscopy
• Nonlinear frequency conversion systems
• Scientific and industrial ultrafast lasers