Infrared fused silica windows with low "OH" content are great for applications requiring IR transmission around 3600nm. This material has < 5 (ppm) OH content. Fused Silica windows are preferred over other glasses because of its transparency to ultraviolet radiation. Other advantages include a higher abrasion resistance and a low coefficient of thermal expansion, making them very resistant to thermal shock.
| Dynasil®: LOHQ Infrared Grade Optical Fused Quartz | ||
|---|---|---|
Glass Code: Dynasil® Low OH Infrared Grade |
LOHQ |
|
type |
Fused Quartz |
|
Color |
Clear |
|
Principal Use |
Qptics |
|
Bubbles |
Class (DIN 58927) |
0.1 |
Sum of CSA (mm2 / cm3) |
< 0.1 |
|
Max. diameter (mm) Bubbles < .01mm not counted |
.5 |
|
Striae: (MIL - G - 174A) in functional direction (i.e. direction of use). The direction of use should be specified at time of enquirey. |
B |
|
Granularity |
Faint |
|
Residual Strain (mm / cm) |
4 - 10 |
|
Fluorescence (254 nm Excitation) |
Blue / Violet |
|
Transmission Incl. Fresnel Reflection Losses (10mm Path) |
Infrared (2600 - 2800 nm) |
> 85% |
Visible |
> 91% |
|
[OH] Content (ppm) |
< 5 |
|