Harmonic separators are used to reflect the wavelength of interest while allowing others to pass. They have anti-reflection coatings on the rear surface. Reflectance is at least 99.5% for the wavelength of interest and transmittance is in excess of 90% for the rejected wavelength (85% in the case of 532 nm).
| Material: | UV Fused Silica BK7A |
| Surface Quality: | <10/5 |
| Surface Flatness: | < λ / 10 @ 633 nm |
| Diameter Tolerance: | < + 0.00 / – 0.20 mm |
| Thickness Tolerance: | < ± 0.25 mm |
| Clear Aperture: | > 85% of diameter |
| Scattering: | Immeasurable |
| Absorption: | Negligible |
| Dimension | 0.5" dia x 0.25" t, 0.75" dia x 0.25" t, 1.0" dia x 0.25" t, 1.5" dia x 0.375" t, 2.0" dia x 0.375" t |
|---|---|
| Material | UV Grade Fused Silica, BK7 Grade A |
| Wavelength 1 | 266 nm, 355 nm, 532 nm, 1064 nm |
| Wavelength 2 | 355nm & 532nm & 1064nm, 1064nm & 532nm, 532 nm, 1064 nm |
| AOI - Polarization | 45 |
Visible Enhanced Aluminum Mirrors (VEAL) 
