Overview:
Dielectric Broadband Mirrors provide an optimized performance at broad wavelength range and
wide angle of incidence (AOI). These multilayer coating stacks
helps to achieve the highest possible reflectivity at broad
spectrum region at normal to 45 degrees incidence. Therefore, they
are ideal for beam steering or reflection applications utilizing
multiple laser sources.
Coatings are provided by Ion Beam Sputtering (IBS) or Electron beam
evaporation with/without Ion assistance coating techniques. High
reflectivity greater than 99% dielectric coatings in the range of
0.19 - 20 µm are available. They are significantly better than that
of metal coated mirrors, and increases system performance by
minimizing energy loss.
General Specifications of Dielectric Broadband Mirror: | Material | BK7 Grade A optical glass, UV grade fused silica | | Dimension Tolerance | +0.0/-0.2mm | | Thickness Tolerance | ±0.2mm | | Clear Aperture | >90% | | Surface Quality | 60/40 sctrach and dig | | Flatness | <λ/10@633nm per 25mm | | Chamfer | Protected <0.5mmx45deg | | Coating | Dielectric HR coating on one surface, Ravg>99.5% for random
polarization, rear surface ground or inspection polished | | Damage Threshold | >5J/cm2, 20ns, 20Hz, @1064nm |
Standard Products of Dielectric Broadband Mirror: | Part Number | Material | Diameter
(mm) | Thickness
(mm) | Wavelength
(nm) | AOI
(°) | | BDM1203-350-400 | BK7 | 12.7 | 3.0 | 350-400 | 0-45 | | BDM2506-350-400 | BK7 | 25.4 | 6.4 | 350-400 | 0-45 | | BDM5006-350-400 | BK7 | 50.8 | 6.4 | 350-400 | 0-45 | | BDM1203-400-750 | BK7 | 12.7 | 3.0 | 400-750 | 0-45 | | BDM2506-400-750 | BK7 | 25.4 | 6.4 | 400-750 | 0-45 | | BDM5006-400-750 | BK7 | 50.8 | 6.4 | 400-750 | 0-45 | | BDM1203-750-1100 | BK7 | 12.7 | 3.0 | 750-1100 | 0-45 | | BDM2506-750-1100 | BK7 | 25.4 | 6.4 | 750-1100 | 0-45 | | BDM5006-750-1100 | BK7 | 50.8 | 6.4 | 750-1100 | 0-45 | | BDM1203-1280-1600 | BK7 | 12.7 | 3.0 | 1280-1600 | 0-45 | | BDM2506-1280-1600 | BK7 | 25.4 | 6.4 | 1280-1600 | 0-45 | | BDM5006-1280-1600 | BK7 | 50.8 | 6.4 | 1280-1600 | 0-45 |
Coating Graphs of Dielectric Broadband Mirror: 350-400nm Dielectric Broadband Mirror AOI0° 
| 350-400nm Dielectric Broadband Mirror AOI45° 
| 400-750nm Broadband Dielectric Mirror AOI0° 
| 400-750nm Dielectric Broadband Mirror AOI45° 
| 750-1100nm Broadband Dielectric Mirror AOI0° 
| 750-1100nm Broadband Dielectric Mirror AOI45° 
| 1280-1600nm Broadband Dielectric Mirror AOI0° 
| 1280-1600nm Broadband Dielectric Mirror AOI45° 
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