Ultra-low-hydroxyl synthetic quartz ingots are high-performance optical materials specifically developed for demanding semiconductor, laser, and advanced optical applications. Manufactured through highly controlled synthetic processes, these quartz ingots feature extremely low hydroxyl (OH) content, exceptional optical purity, and excellent structural uniformity, making them ideal for applications requiring superior optical transmission and long-term stability under harsh operating conditions.
Our Capabilities
With extensive expertise in advanced synthetic quartz materials and precision optical manufacturing, Alfa Chemistry is committed to providing high-performance ultra-low-hydroxyl synthetic quartz ingots for demanding semiconductor and optical applications. Featuring low weak absorption coefficients, high transmittance, high laser damage thresholds, and strong resistance to γ-radiation, our synthetic quartz materials are well-suited for high-power laser systems, semiconductor optics, UV optical components, and other advanced photonic applications. In addition, Alfa Chemistry offers flexible customization capabilities to meet specific customer requirements for dimensions, optical properties, and application performance.
Specification Parameters
QI-03 Ultra-Low-Hydroxyl Synthetic Quartz Ingots (Cat: ACSEM-QI-0003)
QI-04 Ultra-Low-Hydroxyl Synthetic Quartz Ingots (Cat: ACSEM-QI-0004)
Major Impurity Elements and Hydroxyl
| Content (ppm, wt%) | Li | Na | K | Mg | Ca | Cu | Al | Cr | Fe | Ti | Hydroxyl |
| QI-03 | <0.001 | <0.015 | <0.005 | <0.001 | <0.005 | <0.001 | <0.003 | <0.001 | <0.001 | <0.005 | <1 |
Product Features
| Model | Stress Birefringence (nm/cm) | Bubble | Striae Grade | Fluorescence |
| QI-03 | ≤5 | Class 00, Class 0 | 5 | Slight Blue |
Δn Uniformity Grade (ppm)
| Model | HH | H1 | H2 | H3 | H4 | H5 | H10 | H20 |
| QI-03 | ≤0.5 | ≤1 | ≤2 | ≤3 | ≤4 | ≤5 | ≤10 | ≤20 |
Refractive Index Performance
| Spectral Line Wavelength (nm) | Refractive Index | Spectral Line Wavelength (nm) | Refractive Index |
| 365.11 | 1.47460 | 643.85 | 1.45677 |
| 404.66 | 1.46968 | 656.27 | 1.45643 |
| 435.84 | 1.46675 | 706.52 | 1.45521 |
| 441.60 | 1.46628 | 768.20 | 1.45395 |
| 479.99 | 1.46356 | 852.11 | 1.45253 |
| 486.13 | 1.46319 | 1013.98 | 1.45030 |
| 546.07 | 1.46014 | 1129.00 | 1.44892 |
| 587.56 | 1.45853 | 1529.6 | 1.44431 |
| 589.30 | 1.45847 | 1970.1 | 1.43855 |
| 632.80 | 1.45708 | 2325.4 | 1.43295 |
Test conditions: Atmospheric pressure 1013.25 hPa, 50% RH, temperature 22 ± 0.5 °C
Sellmeier Dispersion Constant
| Model | A1 | A2 | A3 | B1 | B2 | B3 |
| QI-03 | 9.48497050E-01 | 6.76738506E-01 | 4.27589675E-01 | 1.02918643E+02 | 4.51113038E-03 | 1.33523414E-02 |
Major Impurity Elements and Hydroxyl
| Content (ppm, wt%) | Li | Na | K | Mg | Ca | Cu | Al | Cr | Fe | Ti | Hydroxyl |
| QI-04 | <0.001 | <0.015 | <0.005 | <0.001 | <0.005 | <0.001 | <0.003 | <0.001 | <0.001 | <0.005 | <1 |
Product Features
| Model | Optical Uniformity (ppm) | Stress Birefringence (nm/cm) | Bubble | Striae Grade |
| QI-04 | NS | ≤5 | Class 0 | 5 |
Heat Absorption Coefficient
| Model | Heat Absorption Coefficient @ 1064nm (ppm/cm) |
| QI-04 | <1 |
Refractive Index Performance
| Spectral Line Wavelength (nm) | Refractive Index | Spectral Line Wavelength (nm) | Refractive Index |
| 365.11 | 1.47460 | 643.85 | 1.45677 |
| 404.66 | 1.46968 | 656.27 | 1.45643 |
| 435.84 | 1.46675 | 706.52 | 1.45521 |
| 441.60 | 1.46628 | 768.20 | 1.45395 |
| 479.99 | 1.46356 | 852.11 | 1.45253 |
| 486.13 | 1.46319 | 1013.98 | 1.45030 |
| 546.07 | 1.46014 | 1129.00 | 1.44892 |
| 587.56 | 1.45853 | 1529.6 | 1.44431 |
| 589.30 | 1.45847 | 1970.1 | 1.43855 |
| 632.80 | 1.45708 | 2325.4 | 1.43295 |
Test conditions: Atmospheric pressure 1013.25 hPa, 50% RH, temperature 22 ± 0.5 °C
Sellmeier Dispersion Constant
| Model | A1 | A2 | A3 | B1 | B2 | B3 |
| QI-04 | 9.48497050E-01 | 6.76738506E-01 | 4.27589675E-01 | 1.02918643E+02 | 4.51113038E-03 | 1.33523414E-02 |
Mechanical Properties
| Parameter | Unit | Test Result |
| Density | g/cm3 | 2.20 |
| Mohs Hardness | - | 6-7 |
| Young's Modulus | GPa | 74.20 |
| Shear Modulus | GPa | 31.22 |
| Poisson's Ratio | - | 0.17 |
| Compressive Strength | GPa | 1.13 |
| Tensile Strength | MPa | 49 |
Electrical Properties
| Parameter | Unit | Test Result |
| Dielectric Constant (20 °C, 500 MHz) | - | 3.9 |
| Electrical Resistivity (20 °C) | Ω·cm | >1*1016 |
| Dielectric Loss Angle (tan δ, 500 MHz) | - | <0.001 |
| Resistance | Ω | 8.0*1015 |
Thermal Properties
| Parameter | Unit | Test Result |
| Strain Point (η=1014.5dPa·s) | °C | 1070 |
| Annealing Point (η=1013dPa·s) | °C | 1200 |
| Softening Point (η=107.6dPa·s) | °C | 1680 |
Choose Alfa Chemistry
Alfa Chemistry is dedicated to providing high-quality synthetic quartz materials for advanced semiconductor and optical applications. With reliable product quality, strict manufacturing standards, and flexible customization capabilities, we are able to help customers achieve stable performance and outstanding optical results in demanding application environments. If you have any needs, please feel free to contact us.
