The 10D20BD.2 Broadband Dielectric Mirror is an extremely versatile mirror for laboratory applications and highly efficient over a broad wavelength range. This 1 inch (25.4 mm) diameter mirror is made from a 6.0 mm thick Borofloat® 33 substrate. Borofloat has low thermal expansion and is an excellent substrate for most applications. Our BD.2 coating offers high reflectance for near infrared diode laser applications. Reflectivity is greater than 99% for p-polarization and 98% for s-polarization from 700–950 nm at 0–45° angle of incidence. Greater than 80% average reflectivity at 632.8 nm is also provided to permit easy alignment using a HeNe laser. The BD-2 coating is extremely durable and will withstand repeated cleaning. This mirror has a λ/10 surface flatness and a 15-5 surface quality.
| Model | 10D20BD.2 |
|---|---|
| Mirror Shape | Round |
| Wavelength Range | 700 to 950 nm |
| Diameter | 1.0 in. (25.4 mm) |
| Thickness | 0.24 in. (6.0 mm) |
| Material | Borofloat 33 or equivalent |
| Coating Type | Broadband Dielectric |
| Surface Quality | 15-5 scratch-dig |
| Coating Code | BD.2 |
| Clear Aperture | ≥central 80% of diameter |
| Reflectivity | Rs>99%, Rp>98% @ 700-950 nm |
| Angle of Incidence | 0-45° |
| Surface Flatness | λ/10 at 632.8 nm over the clear aperture |
| Chamfers | 0.25–0.76 mm face width |
| Chamfers Angle/Tolerance | 45° ±15° |
| Diameter Tolerance | +0/-0.13 mm |
| Thickness Tolerance | ±0.25 mm |
| S2 Surface | Ground |
| Damage Threshold | 1000 W/cm2 CW, 1 J/cm2 with 10 nsec pulses within the wavelength range, typical |
| Cleaning | Non-abrasive method, acetone or isopropyl alcohol on lens tissue recommended |
