High Performance SuperMirrors™

Our high performance SuperMirrors boast the highest absolute reflectivity commercially available. These mirrors are ideal for intracavity or Fabry-Perot designs, where maximum levels of reflectivity are required.

Best in industry absolute R>99.97% in multiple spectral ranges
Substrate flatness & surface quality λ/10, 20-10
Available in diameter 25.4 mm
2 Å rms microroughness for ultra-low scatter
Superpolished substrates 10-5 scratch-dig in the center
Ion beam sputtered (IBS) coating resists changes in environment

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Showing 6 of 6 total products

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Description	Compatibility	Wavelength Range	Price
10CM00SB.1 Superior Fused Silica Dielectric SuperMirrors Broadband SuperMirror, 0-45 deg. AOI, 25.4 mm, R>99.9%, 485-700 nm	UNIVERSAL	485-700 nm	$1,002
10CM00SR.30F Superior Fused Silica Dielectric SuperMirrors Optical Mirror, High Finesse, Ultra-Low Loss, 25.4 mm, R>99.97%, 583-663 nm	UNIVERSAL	583-663 nm	$1,336
10CM00SR.40F Superior Fused Silica Dielectric SuperMirrors Optical Mirror, High Finesse, Ultra-Low Loss, 25.4 mm, R>99.97%, 761-867 nm	UNIVERSAL	761-867 nm	$1,336
10CM00SR.50F Superior Fused Silica Dielectric SuperMirrors Optical Mirror, High Finesse, Ultra-Low Loss, 25.4 mm, R>99.97%, 996-1134 nm	UNIVERSAL	996-1134 nm	$1,336
10CM00SR.60F Superior Fused Silica Dielectric SuperMirrors Optical Mirror, High Finesse, Ultra-Low Loss, 25.4 mm, R>99.97%, 1241-1412 nm	UNIVERSAL	1241-1412 nm	$1,336
10CM00SR.70F Superior Fused Silica Dielectric SuperMirrors Optical Mirror, High Finesse, Ultra-Low Loss, 25.4 mm, R>99.97%, 1457-1659 nm	UNIVERSAL	1457-1659 nm	$1,336

Features

UV Fused Silica Substrates

Fused Silica is synthetic amorphous silicon dioxide of extremely high purity. This non-crystalline, colorless silica glass combines a low content of inclusions with high refractive index homogeneity, a very low thermal expansion coefficient, and excellent transmittance in the wavelength regime from UV to NIR. As a result, these mirrors will perform better with temperature fluctuations and is ideal for high-energy laser applications due to its high energy damage threshold. For more information, please see our Optical Materials technical note.

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 99.97%. 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.

Superpolished Substrates

This mirror is superpolised to <2 Å RMS microroughness for ultra-low scatterring. 10-5 scratch-dig is achieved in the center 50% of the clear aperture. This central area is the sweet spot where Fabry- Perot cavity designs can achieve extremely high finesse.

Surface profile of typical superpolished substrate.

Advanced Ion Beam Sputtered (ISB) Coatings

Newport's proprietary IBS coating technique enables the SuperMirrors to provide the highest absolute reflectivity available as standard mirrors. IBS is a higher energy coating process in which atoms of the coating material can be packed more tightly. The results are very high reflectivity, resistance to environmental changes, and unmatched performance for intra-cavity mirrors which require high finesse.

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.