VIS Coatings | RMI Optics

Visible (400-700 nm)

Materials: Fused Silica, BK7, Zerodur, Borofloat, Schott/Ohara Glasses

Coating Types

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400 nm ≤ λ ≤ 700 nm

Narrowband Anti Reflection coatings, often referred to as "V" coatings, reduce surface reflectance to less than 0.25% at the specified center wavelength and normal incidence.

"V" coatings are better suited to laser applications than single-layer AR coatings. Coatings for high power wavelengths use special materials that are able to withstand higher power than standard narrowband anti-reflection coatings.

These all dielectric coatings are sensitive to polarization, wavelength and angle of incidence.

425 nm ≤ λ ≤ 675 nm

Broadband Anti Reflection coatings substantially reduce surface reflectance over a broad spectral region. These coatings are less sensitive to angle of incidence than "V" coatings, which makes them well suited for the steeply curved surfaces of high numerical aperture lenses, or for applications in which it is necessary to vary the angle of incidence.

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400 nm ≤ λ ≤ 700 nm

Broadband RMAX High Reflection coatings are designed to provide high reflectance over a broad spectral region. These all dielectric coatings exhibit very low loss due to absorption and scatter.

They are less sensitive to angle of incidence than laser-line RMAX mirror coatings, which makes them well suited for the steeply curved surfaces of high numerical aperture mirrors, or for applications in which it is necessary to vary the angle of incidence.

400 nm ≤ λ < 700nm

Laser-Line RMAX High Reflection coatings provide maximum reflectivity with very low loss due to absorption and scatter.

Coatings for high power wavelengths use special materials that are able to withstand higher power than standard RMAX mirror coatings.

These dielectric coatings are sensitive to polarization, wavelength and angle of incidence.

400 nm ≤ λ ≤ 700 nm

Partial Reflection coatings are widely used for beamsplitting, beam sampling and laser output coupling. They divide an incident, monochromatic beam into reflected and transmitted components with the specified intensity ratio.

Coatings for high power wavelengths use special materials that are able to withstand higher power than standard partial reflection coatings.

These all dielectric coatings are sensitive to polarization, wavelength and angle of incidence.

400 nm ≤ λ ≤ 700 nm

Polarizing Cube Beamsplitter coatings are deposited between two right angle prisms that are permanently cemented together. They are designed to separate an incident, unpolarized, monochromatic beam into its S and P polarization components with an extinction ratio (Tp/Ts) in excess of 1000:1.

The incident energy is split into two orthogonally polarized beams that emerge at 90° with respect to each other.

These coatings are also useful for combining two orthogonally polarized beams.

400 nm ≤ λ ≤ 650 nm

Broadband Polarizing Cube Beamsplitter coatings are deposited between two right angle prisms that are permanently cemented together. They are designed to separate an incident, unpolarized, monochromatic beam into its S and P polarization components with an extinction ratio (Tp/Ts) in excess of 1000:1.

The incident energy is split into two orthogonally polarized beams that emerge at 90° with respect to each other.

These coatings are also useful for combining two orthogonally polarized beams.

425 nm ≤ λ ≤ 675 nm

Non-Polarizing Broadband Cube Beamsplitter coatings are vacuum deposited between two right angle prisms that are permanently cemented together. These coatings utilize a combination of metallic and dielectric films.

They are designed to divide an incident, polychromatic beam into reflected and transmitted components with a ratio (R/T) of 45/45 ± 5%.

400 nm ≤ λ ≤ 700 nm

Non-Polarizing Plate Beamsplitter coatings divide an incident, monochromatic beam into reflected and transmitted components with the specified intensity ratio. They are designed for applications in which it is necessary to maintain the polarization characteristics of the incident beam.

These all dielectric coatings are sensitive to wavelength and angle of incidence. They are durable and highly resistant to laser damage.

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400 nm ≤ λ ≤ 700 nm

Dichroic Filter coatings are designed to transmit one spectral region (passband) and reflect another (rejection band).

The filter is a Short Wave Pass (SWP) if the passband is to the left of the transition slope, and a Long Wave Pass (LWP) if the passband is to the right of the slope.

The advantages of Dichroic Filters over Colored Glass Filters are:

The rejection band is reflected rather than absorbed.
Steeper transition slope between the passband and the rejection band; i.e. sharper cut-on or cut-off.
Coatings can be custom designed for specific center wavelengths.