Extreme low-loss Mirrors
Overview
Are you involved with certain applications that require extreme low-loss optics? You are in a right place. New improved mirrors complement OPTOMAN product range. IBS coated mirrors deliver maximum reflectivity of R>99.998% and total losses <15 ppm (absorption, scatter and transmission) at discrete wavelength and angle of incidence.
Coatings are applied on high purity fused silica substrates (plane, spherical or wedged) polished to RMS roughness of < 2 Å. At the same time coatings feature high environmental stability due to near-bulk packing density of coating films that experience virtually no performance shift due to environmental factors, such as temperature and humidity.
Very high reflectance values for complex coating designs, e.g. GTI laser mirrors with R>99.95% or thin-film polarizers with Tp/Ts >3000:1 can be utilized as well. Please inquire OPTOMAN for more details.
Features
Reflectance >99.998%
Mirrors available with CRD measurement report to justify reflectivity and loss values.
High laser induced damage threshold
Ultra-hard dielectric coatings for high damage threshold in most demanding laser applications. LIDT values reach >50 J/cm2 @ 1064 nm, 10 ns, S-on-1.
Extremely low absorption and scatter loss
IBS coated mirrors feature absorption below 1 ppm.
Super polished fused silica substrates
Substrates with RMS roughness <1 Å are mandatory for making extreme low-loss coatings.
Custom - Size range from 10 mm up to 50 mm.
- Spectral range from 1000 nm up to 1600 nm.
- Custom shape, curvature, size.
- Optimization for specific AOI or AOI cone.
- Multi-wavelength design and broadband configuration.
- Optimization for ultrafast applications.
Experimental data
Cavity ring-down measurement
In 00 cavity: HR>99.99867% @ 1064 nm. Loss = 13.3 ppm (absorbtion, scatter, transmission)
In 450 cavity: HRs>99.99857% & HRp>99.99816% @ 1064 nm. Loss = 14.3 ppm (S-pol) and 18.4 ppm (P-pol)
