Features of HGS Crystals,:
- Wide Transparency Range: 0.55–13 µm
- High Nonlinear Coefficient: d₃₆ (1.064 µm) = 1.8 d₃₆ (AgGaS₂) ± 15% = (35.2 ± 5.3) pm/V
- High Laser Damage Threshold: 60–90 MW/cm² (1064 nm, 10 ns)
- High Refractive Indices: nₒ = 2.5796, nₑ = 2.5264 @ 0.65 µm
- Low Absorption Coefficient: 2.34 eV bandgap
- Excellent Mechanical Properties: Density of 4.95 g/cm³, Microhardness of 3–3.5
Mercury Gallium Sulfide (HgGa₂S₄), abbreviated as HGS, is an exceptionally high-performance nonlinear optical crystal. With its wide transparency range and high nonlinear coefficient, HGS is perfectly suited for advanced optical applications including optical parametric oscillation (OPO), frequency doubling, mixing, and difference frequency generation (DFG).
Basic Parameters
| Parameter | Value |
|---|---|
| Transmission Range | 0.55–13 µm |
| Bandgap Width | 2.34 eV |
| Density | 4.95 g/cm³ |
| Microhardness | 3–3.5 |
| Negative Uniaxial Crystal | nₒ >> nₑ |
| Refractive Indices | nₒ = 2.5796, nₑ = 2.5264 @ 0.65 µm |
| Nonlinear Coefficient | d₃₆ (1.064 µm) = 1.8 d₃₆ (AgGaS₂) ± 15% = (35.2 ± 5.3) pm/V |
| Laser Damage Threshold | 60–90 MW/cm² (1064 nm, 10 ns) |
Refractive Indices at Various Wavelengths
| Wavelength (µm) | Refractive Index nₒ | Refractive Index nₑ |
|---|---|---|
| 0.650 | 2.5264 | 2.3690 |
| 1.076 | 2.3290 | 2.2372 |
| 3.540 | 2.2372 | 2.1558 |
Optical Properties
| Property | Value |
|---|---|
| Transmission Range | 0.55–13 µm |
| Refractive Indices | nₒ = 2.5796, nₑ = 2.5264 @ 0.65 µm |
| Nonlinear Coefficient | d₃₆ (1.064 µm) = 1.8 d₃₆ (AgGaS₂) ± 15% = (35.2 ± 5.3) pm/V |
HgGa₂S₄ crystals (HGS Crystals )are characterized by their exceptional transparency range and high nonlinear coefficient, making them ideal for mid-IR applications. Their high laser damage threshold and excellent mechanical properties ensure superior performance in demanding optical systems.
At Shape Optics, we pride ourselves on delivering high-quality, precision-engineered optical crystals that meet the rigorous demands of modern optical technologies. Our commitment to excellence and innovation ensures that our HgGa₂S₄ crystals provide unparalleled performance and reliability for your advanced optical applications.
For more information, please visit our website at Shape Optics or contact us directly to discuss your specific requirements. Shape Optics – your partner in optical innovation and excellence.
