Key Features:
- Wide Transparency Range: BaGa₄Se₇ crystals offer a broad transmission range of 0.47–18 µm, making them ideal for various infrared applications.
- High Frequency Doubling Efficiency: These crystals exhibit frequency doubling efficiency 2-3 times that of AgGaS₂ crystals.
- Superior Laser Damage Threshold: With a laser damage threshold approximately 3.7 times higher than AgGaS₂ crystals, these crystals can withstand demanding high-power laser applications.
- Exceptional Nonlinear Coefficients: Featuring a maximum nonlinear coefficient of 24.3 pm/V, BaGa₄Se₇ crystals are excellent for nonlinear optical processes.
Description: Barium Gallium Selenide (BaGa₄Se₇), abbreviated as BGSe, is a novel nonlinear optical crystal with remarkable transparency and high damage threshold, making it an outstanding material for mid-IR applications. Its exceptional nonlinear coefficients and high frequency doubling efficiency make it indispensable for advanced optical systems in fields such as biomedicine, spectroscopy, atmospheric sensing, and more.
Applications:
- Frequency Doubling: Enhances the efficiency of CO₂ laser systems and other laser sources.
- Optical Parametric Oscillation (OPO): Utilized in OPO systems for generating tunable mid-IR radiation.
- Difference Frequency Generation (DFG): Ideal for DFG processes to produce coherent mid-IR light.
- High-Power Laser Systems: Suitable for high-power laser applications due to its high damage threshold and superior nonlinear properties.
Technical Specifications
Processing Parameters:
| Parameter | Value |
|---|---|
| Orientation Accuracy | ± 0.5° |
| Clear Aperture | > 90% |
| Surface Flatness | λ/8 @ 633 nm |
| Surface Quality | 40 – 20 scratch & dig (MIL-PRF-13830B) |
| Parallelism | < 30 arcsec |
| Perpendicularity | < 10 arcmin |
| Transmitting Wavefront Distortion | < 0.1 mm |
| Dimension Tolerance | ± 0.5 mm (length > 10 mm) |
Physical and Optical Properties:
| Property | Value |
|---|---|
| Crystal Structure | Orthorhombic |
| Lattice Constants, Å | a = 5.757, c = 10.301 |
| Density, g/cm³ | 4.702 |
| Mohs Hardness | 3 – 3.5 |
| Melting Point, °C | 997 |
| Transparency Range, µm | 0.47 – 18 |
| Nonlinear Coefficient | d₃₆ = 15.2 pm/V @ 10.6 µm |
| Absorption Coefficient | 0.6 cm⁻¹ @ 10.6 µm |
| Effective Nonlinear Coefficient | 24.3 pm/V |
| Damage Threshold | 10 – 20 MW/cm² @ 10.6 µm |
| Thermal Conductivity | 1.5 W/m·K |
Transmission Curves
Transmission vs. Wavelength
Standard Sizes
- Rectangular: 8×8 mm, 5×5 mm
- Thickness: 0.1–30 mm
- Other sizes available upon request
Why Choose Shape Optics?
Shape Optics excels in providing high-quality optical materials, and our BaGa₄Se₇ crystals are no exception. With superior optical properties, precise manufacturing, and dedicated customer support, Shape Optics is your trusted partner for advanced optical solutions. Our BGSe crystals are tailored to meet the stringent requirements of modern optical applications, ensuring maximum performance and reliability.
For more information, please visit our website at Shape Optics or contact us directly to discuss your specific requirements. Shape Optics is committed to delivering top-quality optical crystals and materials for your innovative projects.
