Our high performance SupperMirrors boast the highest absolute reflectivity commercially offered. These mirrors are ideal for intracavity or fabry-perot designs where super high levels of reflectivity is required.
- Best in industry absolute reflectivity R>99.97%
- Superpolished substrates offering 0-0 scratch dig
- <1 Å rms microroughness for ultra-low scatter
- Optical loss of <100ppm
- Ion beam sputtered (IBS) coating resists changes in environment
Absolute R>99.97% Mirrors In Stock
Many standard mirrors are offered with high average reflectivity, but these Supermirrors have exceptional absolute reflectivity specifications of greater than 99.7%. We stock theses mirrors making them the highest absolute reflectivity available in a standard catalog optic. These mirrors are ideal when you need every photon. The high finesse coatings have finesse greater than 10,000 and efficiency greater than 10% when used in carefully constructed cavities.
Broadband Coated SuperMirrors™
High finesse mirrors work in a narrow spectral band. For applications that require high reflectivity across a winder band, we offer a more broadband general purpose SuperMirrors. The SB.1 coating boasts reflectivity greater than 99.9% from 485 to 700 nm at 0 to 45 degrees angle of incidence.
An amazing 0-0 scratch-dig is achieved in the center 50% of the clear aperture. This central area is the sweet spot where Fabry pert cavity designs can achieve extremely high finesse.
Surface profile of typical superpolished substrate. Advanced Ion Beam Sputtered (ISB) Coatings
Our selection of ion-beam deposited coatings covers the spectral range of 583–1659 nm. These coatings are deposited on 25.4 mm diameter UV grade fused silica substrates.
Keep Surface Clean for High Performance
Care should be taken to insure that these mirrors remain clean during use to maintain the high reflectivity and performance levels. The only cleaning operation recommended is the removal of dust with a low pressure filtered dry nitrogen nozzle. Cleaning techniques specifically developed for high performance optics may be used by qualified personnel. 100 ppm performance levels cannot be maintained if the optic is cleaned using standard techniques.