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 |
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 |
Optical grade quartz crystals have a broad transparent range of 0.2μm to 3.5μm, with high internal crystalline perfection and excellent optical homogeneity. Quartz crystals exhibit exceptional mechanical and thermal properties with low thermal expansion avoiding deformation. Furthermore, the high machinability of quartz allows for convenient engineering and adjusting of the dimensions and the designs of optics, its resistance to chemical corrosion and deliquescence attribute to superb durability. Quartz also stands out for its exceptional refractive characteristic, which makes it suitable for the manufacturing of waveplates and polarizing optics.
Shanghai North Optics offers optical grade quartz crystals, quartz crystal ingots, blanks, polished wafers, and substrates. The maximum size is 130x130mm square or 150mm as diamter.
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