Features
- Round Mirror Diameters: 7.0 mm, 1/2", 19.0 mm, 1", 2", 3", or 4"
- Square Mirror Edge Lengths: 1/2", 1", or 2"
- Four Broadband Coating Options
- 350 - 400 nm (Not Stocked with Ø7.0 mm, Ø3", Ø4", or Square Substrates)
- 400 - 750 nm
- 750 - 1100 nm
- 1280 - 1600 nm (Not Stocked with Ø3", Ø4", or Square Substrates)
- Fused Silica Substrates
- Ravg > 99% for S- and P- Polarization for Angles of Incidence from 0 to 45°
- Designed for CW and Nanosecond Lasers
Thorlabs' Fused Silica Broadband Dielectric Mirrors offer excellent reflectance over four different spectral ranges. Due to run-to-run coating variations, please note that the specified spectral range listed for each coating is smaller than the actual spectral region over which the mirror is effective. The plots shown under the Reflectance Plots tab show the performance characteristics of a typical mirror near the edges of its effective spectral range.
The round Ø1/2", Ø1", and Ø2" mirrors are also available in packs of 10 at a discount over the individual price.
As seen in the photo to the right, the back of each mirror is engraved with its respective part number, with the exception of our Ø7.0 mm mirrors.
The plot below is the reflectance of each broadband mirror coating in the BB series as a function of wavelength for unpolarized light incident at an angle of 6° or 8°. This choice of incident angle was due to the measurement limitations at 0°; however the plots closely represent reflectance at 0°. More detailed plots that also include polarization information are available under the Reflectance Plots tab.
For applications that would benefit from having a small portion of the beam transmitted through the optic, consider one of our backside polished mirrors. Alternatively, if you need a mirror that bridges the spectral range between two different coatings, consider a mirror with a metallic coating or, if the mirrors are needed in sufficient quantity, contact Technical Support for a custom mirror quotation. Please note that these mirrors are not suitable for ultrafast applications; see our low GDD ultrafast mirrors for picosecond and femtosecond pulsed lasers.
