D-Shaped Pickoff Mirror, Seperating Closely Spaced Beams
Overview: D-Shaped pickoff mirrors allow for easy separation of two or multiple beams which are aligned very closely together. The reflective coating of D-shaped mirrors extends to the stage that leaving less than 0.1mm distance to the straight edge of the mirror, enabling the separation of closely spaced optical beams. In addition, a wedge behind the mirror straight edge is cut to prevent unselected rays from blocking the mirror. Star Optic provides D-shaped pickoff mirrors in various sizes and wide variety of dielectric and metallic coatings. General Specifications of D-Shaped Pickoff Mirror: Dimension Tolerance | +0.0/-0.2mm | Thickness Tolerance | ±0.2mm | Surface Quality | 60/40 | Clear Aperture | >90% | Flatness | λ/10@632.8nm | Coating | High reflective coating on one surface, back surface ground or inspection polished - Protected Aluminum: Ravg>87%@400-1200nm, AOI0-45°
- Protected Silver: Ravg>95%@400-12000nm, AOI0-45°
- Protected Gold: Ravg>98%@2000-12000nm, AOI0-45°
- Dielectric HR coating: R>99%, AOI0-45°
| Damage Threshold | >1J/cm2, 20ns, 20Hz, @1064nm |  Standard Products of D-Shaped Pickoff Mirror: Part Number | Material | Diameter (mm) | Thickness (mm) | Wavelength | Coating | DSM2506-PAL | BK7 | 25.4 | 6.35 | 400-1200 | Protected Aluminum | DSM2506-PAG | BK7 | 25.4 | 6.35 | 400-12000 | Protected Silver | DSM2506-PAU | BK7 | 25.4 | 6.35 | 2000-12000 | Protected Gold | DSM2506-450-700 | BK7 | 25.4 | 6.35 | 450-700 | Dielectric HR | DSM2506-750-1100 | BK7 | 25.4 | 6.35 | 750-1100 | Dielectric HR | Coating Graphs of D-Shaped Pickoff Mirror: Protected Aluminum Coating  Ravg>87%@400-1200nm | Protected Silver Coating  Ravg>95%@400-12000nm | Protected Gold Coating  Ravg>98%@2000-12000nm | | 450-700nm D-Shaped Pickoff Mirror  | 450-700nm D-Shaped Pickoff Mirror  | 750-1100nm D-Shaped Pickoff Mirror  | 750-1100nm D-Shaped Pickoff Mirror  | |