T-BBD05-E04 - Ø1/2" Broadband Dielectric D-Shaped Mirror, 1280 - 1600 nm
T-BBD05-E04 - Ø1/2" Broadband Dielectric D-Shaped Mirror, 1280 - 1600 nm
E04-Coated Broadband Dielectric D-Shaped Mirrors offer >99% average reflectance over the 1280 - 1600 nm spectral range. Although broadband coatings offer smaller operating wavelength ranges than metal mirrors, they typically yield higher reflectance in those ranges than their metallic counterparts.
The plot to the right shows the measured reflectance of this coating as a function of wavelength. The shaded region denotes the range over which we recommend using these optics. Data was obtained using at a 45° angle of incidence.
Broadband Dielectric Mirror Specifications
| Coating | -E04 Coating | |
|---|---|---|
| Item # | T-BBD05-E04 | T-BBD1-E04 |
| Coating Range | 1280 - 1600 nm | |
| Diameter | Ø1/2" | Ø1" |
| Diameter Tolerance | +0.0/-0.1 mm | |
| Thickness | 6.0 mm | |
| Substrate | Fused Silica | |
| Front Surface Flatness | λ/10 @ 633 nm | |
| Surface Quality | 10-5 Scratch-Dig | |
| Clear Aperture | >90% of Diameter | |
|
Reflectance (P and S Polarizations for 0° - 45°) |
Ravg > 99% from 1280 - 1600 nm | |
| Parallelism | ≤5 arcmin | |
| Damage Threshold (Pulse) | 2.5 J/cm2 (1542 nm, 10 ns, 10 Hz, Ø0.181 mm) |
|
| Damage Threshold (CW) | 350 W/cm (1540 nm, Ø1.030 mm) | |
Damage Threshold Specifications
| -E04 | Pulsed | 2.5 J/cm2 (1542 nm, 10 ns, 10 Hz, Ø0.181 mm) |
| CWa,c | 350 W/cm (1540 nm, Ø1.030 mm) |