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UV light is reflected efficiently by this coating, while visible and IR light are transmitted. It is mainly applied to excimer lasers and third and forth harmonic outputs of Nd:YAG laser. Requirement of Laser damage threshold is critical to coatings in UV. Our products exhibit extremely good reliability in this aspect.
| Wavelength (nm) | Reflectance |
| 193 | R<0.3% |
| 248 | R<0.3% |
| 266 | R<0.3% |
| 308 | R<0.3% |
| 340 | R<0.3% |
| 355 | R<0.3% |
| Wavelength (nm) | Reflectance |
| 180-400nm | R>90% |