Key Features:
- Emission near the 3 µm wavelength
- High absorption near water’s absorption peak
- Extensive applications in medical and research fields
- Efficient pumping using flash lamps
- Enhanced energy transfer with Chromium doping
Description: Er:YAG & Er,Cr:YAG crystals are vital for producing 3 µm lasers, which are near water’s absorption peak, making them highly effective for medical and research applications. Er:YAG & Er,Cr:YAG crystals primarily absorb at 970 nm and emit at 2.94 µm, which is efficiently pumped by flash lamps. However, the broad spectral range of flash lamps can lead to lower energy efficiency. Chromium doping in Er:YAG & Er,Cr:YAG crystals enhances energy transfer, optimizing the efficiency of the 3 µm laser emission.
Physical Properties:
- Chemical Formula: Er₃Al₅O₁₂ and Er,Cr₃Al₅O₁₂
- Doping Concentration: Customizable based on application
- Melting Point: 1970°C
- Density: 4.56 g/cm³
- Mohs Hardness: 8.25
- Thermal Conductivity: 11.2 W·m⁻¹·K⁻¹
Optical Properties:
- Principal Pump Absorption Wavelengths: 970 nm
- Emission Wavelengths: 2.94 µm
- Fluorescence Lifetime: 2 ms (upper state), 0.1 ms (lower state)
- Refractive Index: 1.82 at 2.94 µm
Standard Specifications:
- Orientation: [111] within ±0.5°
- Diameter: Up to 3 inches
- Thickness: 0.5 to 10 mm
- Surface Quality: 10/5 Scratch/Dig (MIL-PRF-13830B)
- Surface Flatness: λ/10 at 632.8 nm over 90% aperture
- Parallelism: < 10 arc seconds
- Perpendicularity: < 5 arc minutes
Other Properties:
- Extinction Ratio: > 28 dB
- Wavefront Distortion: λ/8 @ 632 nm
- Diameter Tolerance: +0/-0.05 mm
- Length Tolerance: ±0.5 mm
- Clear Aperture: > 90%
- Surface Quality: 10-5 Scratch/Dig
Applications:
- Medical lasers for surgical and therapeutic procedures
- Laser systems for dental applications
- Industrial laser systems for materials processing
- Scientific research and development
Processing and Handling:
- Er:YAG & Er,Cr:YAG crystals require careful handling to avoid surface damage and contamination.
- Use gloves or finger cots when handling crystals.
- Store in a clean, dry environment with temperature control to prevent thermal shock.
Why Choose Shape Optics:
- We provide high-quality Er:YAG & Er,Cr:YAG crystals with precise doping concentrations and excellent optical properties.
- Our crystals undergo stringent quality control to ensure reliability and performance in demanding applications.
Shape Optics Strength and Capabilities:
- Expertise in crystal growth and fabrication techniques.
- Advanced metrology and inspection facilities to ensure superior product quality.
- Customization options available to meet specific requirements.
- Comprehensive support and consultation services to assist in the integration of Er:YAG & Er,Cr:YAG crystals into various laser systems.
