Refractive Index
| Wavelength (μm) | no | ne | Wavelength (μm) | no | ne | Wavelength (μm) | no |
| 0.1850 | 1.65751 | 1.68988 | 0.9914 | 1.53514 | 1.54392 | 2.3000 | 1.51561 |
| 0.1980 | 1.65087 | 1.66394 | 1.1592 | 1.53283 | 1.54152 | 2.6000 | 1.50986 |
| 0.2310 | 1.61395 | 1.62555 | 1.3070 | 1.53090 | 1.53951 | 3.0000 | 1.49953 |
| 0.3400 | 1.56747 | 1.57737 | 1.3958 | 1.52977 | 1.53832 | 3.5000 | 1.48451 |
| 0.3940 | 1.55846 | 1.56805 | 1.4792 | 1.52865 | 1.53716 | 4.0000 | 1.46617 |
| 0.4340 | 1.55396 | 1.56339 | 1.5414 | 1.52781 | 1.53630 | 4.2000 | 1.45690 |
| 0.5080 | 1.54822 | 1.55746 | 1.6815 | 1.52583 | 1.53422 | 5.0000 | 1.41700 |
| 0.5893 | 1.54424 | 1.55335 | 1.7614 | 1.52468 | 1.52468 | 6.4500 | 1.27400 |
| 0.7680 | 1.53903 | 1.54794 | 1.9457 | 1.52184 | 1.53004 | 7.0000 | 1.16700 |
| 0.8325 | 1.53773 | 1.54661 | 2.0531 | 1.52005 | 1.52823 |
Specifications:
| Material | Quartz Crystal | Wavelength | 150~4000nm |
| Size | 0.1mm-100mm | Surface Quality | 10/5 S/D |
| Optical Axis Orientation | <6 arc min | Parallelism | <1 arc sec |
| Flatness | λ/10 @ 633nm | Clear Aperture | >95% of full aperture |
| Coating | Upon Customer’s Specification | ||
Basic Properties:
| Crystal Class | Hexagonal | Molecular Weight | 60.06 |
| Density | 2.635-2.660 g/cm3@ 289 K | Dielectric Constant | for 3x107 Hz @295 K 35 microns |
| Parallel | 4.27 | Perpendicular | 4.34 |
| Reflection Loss | 8.2 % for two surfaces @ 2 mm | Melting Temperature | 1740 K |
| Specific Heat | 0.17 cal/(g K)@ 273 K | Knoop Hardness | 741 kg/mm2 |
| Transmission Range | 0.4 - 4.5μm | Debye Temperature | 470 K |
| Thermal Conductivity | Parallel/Perpendicular | 720/370 W/(m K) @20K | |
| Parallel/Perpendicular | 20/10W/(m K) @194K | ||
| Parallel/Perpendicular | 10.7/6.2W/(m K) @323K | ||
| Parallel | 97.2 GPa | Perpendicular | 76.5 GPa |
| Bulk Modulus | 36.4 GPa | Shear Modulus | 31.14 GPa |
| Solubility in Water | None | Bandgap | 8.4 |
Optically, crystalline quartz is used extensively as a wave retardationmedium, using the birefringent properties for use in quarter-wave platesand in polarizers. Quartz is mined naturally, but more commonly produced synthetically in large long faceted crystals.
Quartz is positive birefringent.
