Anti-Reflection (AR) Coatings
AR coatings reduce surface reflections, increasing transmittance. A single-layer MgF2 coating can bring reflectance down from ~4% per surface to ~1.5% for visible light. Multi-layer broadband AR coatings can achieve less than 0.5% reflectance across the visible spectrum.
When to use: Imaging lenses, multi-element optics, laser systems where transmission matters.
High-Reflectance (HR) Coatings
HR coatings maximize reflectance at specific wavelengths. Dielectric HR coatings can achieve 99.9%+ reflectance for laser applications. Metal mirrors with protective overcoats offer good reflectance across broad bands.
When to use: Laser resonators, beam splitters, mirrors in optical systems.
Partial Reflection (Beam Splitter) Coatings
Partial reflectors split a beam into transmitted and reflected components at a controlled ratio — typically 50/50 but can be customized.
When to use: Interferometers, power monitors, optical tweezers.
Specifying Coatings
When requesting a quote, specify: wavelength range, target reflectance/transmittance, angle of incidence, polarization state, and environmental requirements. Our team will recommend the optimal coating design for your application.