| SK-1320 series of Ohara Quartz Co.,Ltd. is a synthetic fused silica for the optics developed as the fused silica material for precise various optical components for the optics application and the high-power laser. SK-1321(abbr.U1),-1322(abbr.U2) is guaranteed the homogeneity each in one direction and three directions. "L" attached to the end is suitable for the high-power laser.
Lens,Window,Mirror,Prism,Filter,Corner Cube,Beam Splitter Etalons,Brewster,Optical Flat etc |
Line up & each characteristics
| Line up | Max. size (mm) |
Striae*1 | Homogeneity*2 | Birefrengence*3 (nm/cm) |
Bubbles*3 Striae (mm2/100cm3) |
Fluorescence*4 | Transmission (nm) |
|---|---|---|---|---|---|---|---|
| SK-1320L | 600 | A | 1D 10 |
0-0.03 | None | 170-2500 | |
| SK-1321(U1) | 250 | A | 1D2×10-6 |
1D3 |
0-0.03 | Red | 170-2500 |
| SK-1321L(U1L) | 250 | A | 1D2×10-6 |
1D3 |
0-0.03 | None | 170-2500 |
| SK-1322(U2) | 250 | A | 3D2×10-6 |
3D3 |
0-0.03 | Red | 170-2500 |
| SK-1322L(U2L) | 150 | A | 3D2×10-6 |
3D3 |
0-0.03 | None | 170-2500 |
| SK-1300*5 | 600 | A | 1D10 |
0-0.03 | Red | 170-2500 | |
| SK-1310*5 | 600 | A | 1D10 |
0-0.03 | Blue | 170-3600 |
(Typical values Not guaranteed)
*1 According to the MIL-G-174 standard of the U.S.Military*2 Valid area/diameter×90%
*3 Conforms to DIN 58927
*4 Excited at Excimer laser.
Please consult us about the application needed the excimer laser durability.*5 Please refer to other special leaflet.
Optical Qualities -Transmission
(Typical values Not guaranteed)
Refractive lndex
25°C(77F)
| Wave length(nm) | Refractive Index | Wave length(nm) | Refractive Index | |
|---|---|---|---|---|
| 237.83 | 1.51538 | 587.56(d) | 1.45863 | |
| 248.20 | 1.50907 | 589.26(D) | 1.45862 | |
| 274.84 | 1.49655 | 656.27(C) | 1.45653 | |
| 334.15 | 1.48036 | 706.52(r) | 1.45535 | |
| 365.48(i) | 1.47514 | 852.11(s) | 1.45266 | |
| 404.65(h) | 1.47021 | 1013.98(t) | 1.45044 | |
| 435.83(g) | 1.46728 | 1529.6 | 1.44449 | |
| 486.13(F) | 1.46329 | 2325.4 | 1.43318 | |
| 546.07(e) | 1.46066 |
(Typical values Not guaranteed)
Abbe number,Average dispersion
● Abbe number |
● Average dispersion |
Physical properties
| ltem | Unit | Value | ltem | Unit | Value |
|---|---|---|---|---|---|
| Density | g/cm3 | 2.20 | Coefficient of thermal expansion | 1/K | 5.5×10-7 |
| Young's module | GPa | 71.4 | |||
| Torsional rigidity | GPa | 30.9 | Softening point | °C | 1700 |
| Poisson's ratio | 0.17 | Annealing point | °C | 1160 | |
| Compression strength | GPa | 1.1 | Strain point | °C | 1060 |
| Bending strength | MPa | 69 | |||
| Tensile strength | MPa | 55 | Specific her(t 26°C) | kJ/kg K |
0.74 |
| Vickers hardness | GPa | 8.8-10.1 | Thermal conductivity ratio(26°C) | W/mK |
1.1 |
| Knoop hardness | GPa | 6.4-7.0 | Thermal conductivity ratio(100°C) | W/mK |
1.4 |
(Typical values Not guaranteed)
