Optical coating manufacturing and thin-film engineering environment

Optical Coating

We design and manufacture antireflection, reflective, beamsplitter and filter coatings for UV, visible and near-infrared optics. Our service covers coating development, deposition and spectral verification, from prototype components to production batches.

Coating Capabilities

Coating Services

  • We coat our own optical components and customer-supplied substrates.
  • Prototype and production orders use electron-beam evaporation, plasma-assisted electron-beam evaporation or thermal evaporation.

Service Range

  • Coating wavelength range: 0.3–2.5 μm.
  • Substrate size: 3–480 mm.
  • Coated aperture: full aperture to 1 mm from the edge.
  • Smaller apertures: defined by the component drawing.
  • Environmental durability: tested to the applicable military or commercial specification.

Coatings for Transmission, Reflection and Wavelength Selection

Illustrative antireflection coating spectrum

Antireflection Coatings

Single-wavelength, dual-band and broadband designs; typical broadband average reflectance below 0.5% across the specified operating band.

Illustrative dielectric mirror reflection curve

Dielectric Mirrors

Broadband and laser-line reflectors. A visible-band example provides average reflectivity above 98% from 400–750 nm at 0–45° AOI, for all polarization states.

Illustrative metallic mirror

Metallic Mirrors

Protected and enhanced aluminum or silver coatings provide broadband reflection. We select the metal and protective layers around the operating spectrum and environmental requirements.

Illustrative beamsplitter transmission and reflection

Beamsplitter Coatings

Polarizing, broadband non-polarizing hybrid and dichroic designs, including longpass, shortpass and multiband coatings. Transmission and reflection are specified at the operating AOI.

Illustrative bandpass coating curve

Bandpass Coatings

Hard-coated example: 10 nm passband, OD4 blocking; typical LIDT 1 J/cm² at 532 nm, 10 ns. Designed for spectral performance rather than high laser damage resistance.

Illustrative dual-band AR response

Dual-Band Laser AR

A 532/1064 nm fused-silica window design has AR coatings on both surfaces: reflection below 0.25% at 532 nm and below 0.1% at 1064 nm.

Coating Design and Deposition

We develop multilayer designs with OptiLayer, FilmStar and TFCalc, and provide theoretical spectral curves during quotation and development. Supplied spectral data can also be used to model a coating.

Our deposition options also include ion beam sputtering for dense films and precise thickness control. We design, CNC-machine and fit-check custom fixtures to maximize coating area while protecting the substrate. During deposition, we monitor material and layer behavior and control chamber parameters for repeatability. Finished coatings undergo spectral and environmental testing before shipment.

Illustrative coating layer structure and spectrum

Spectral Verification

We measure transmission and reflection using UV–VIS–NIR spectrophotometry and evaluate polarization-dependent performance. Variable-angle absolute reflectance testing covers 10°–70°. We provide measured spectral curves and raw data for comparison with the design. The measurement range is separate from the coating service range.

Spectral Range Absolute Reflectance AOI Polarization
200–3200 nm 10°–70° S / P

Discuss Your Coating Requirements

Send your target spectrum, substrate material, dimensions, AOI, polarization and quantity. For an existing design, include the coating specification or drawing so we can review deposition and testing requirements.

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