Key Features:
- Emission at 2090 nm wavelength
- High transmission in the atmospheric window
- Eye-safe wavelength
- Low thermal damage to surrounding tissues
- Extensive applications in medical and laser technologies
Description: Ho:YAG crystals are known for their emission wavelength of 2090 nm, which is in the eye-safe range. This wavelength has high transmission in the atmospheric window, making it ideal for remote sensing, laser ranging, and laser radar applications. The 2090 nm wavelength also coincides with the high absorption peak of water in biological tissues, ensuring minimal penetration depth and reduced thermal damage to surrounding tissues during medical procedures. Consequently, Ho:YAG lasers are extensively used in surgical and therapeutic applications. Additionally, Ho:YAG lasers can be used as pump sources for mid-infrared laser crystals (e.g., ZGP crystals) to produce 3-5 µm infrared lasers.
Physical Properties:
- Chemical Formula: Ho₃Al₅O₁₂
- 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: 1907 nm
- Emission Wavelengths: 2090 nm
- Fluorescence Lifetime: 8 ms
- Refractive Index: 1.83 at 2090 nm
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 remote sensing and laser ranging
- Industrial laser systems for materials processing
- Scientific research and development
Processing and Handling:
- Ho: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 Ho: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 Ho:YAG crystals into various laser systems.
