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IBS Thin Film Coatings

IBS Thin Film Coatings

Perkins Precision Developments (PPD) offers custom IBS coatings for laser mirrors, beam splitters, polarizers and other precision optical components at wavelengths from 350nm to 3um. We utilize Ion Beam Sputtered coating technology because it is a repeatable and predictable process that produces durable, densely packed, non-porous micro-structures. This results in stable, damage-resistant optics that are insensitive to environmental changes such as heat, humidity and pressure.

The IBS coating technique is ideal for complex spectral designs, high power CW and pulsed Nd:YAG, directed energy fiber lasers and applications where it is critical to minimize losses from absorption and/or scatter. Click here for absorption data taken at 1064nm (< 1ppm!).

Typical coating types include dielectric high power high reflectors (HR), broadband high reflectors (BBHR), low-loss anti-reflection (AR), dual-band anti-reflection (DBAR), dichroic beam splitters, output couplers, low phase shift mirrors and thin film plate polarizers.

We also provide IBS thin film coatings on customer supplied substrates such as windows and aspheric lenses. Please send us your requests for custom coatings, high energy laser windows, HEL mirrors & other precision laser optics and assemblies.

We are often asked for AR coatings with damage thresholds of 20J or even greater than 40J at 1064nm. Click here for recent results showing test data from in-house coated windows that withstood more than 60 J/cm2, peak fluence!

Coated Surface Roughness Comparison

Benefits

Options

CoatingTypicalBest
AOI0°, 45°, 56°custom
HR Coating> 99.9%> 99.995%
AR CoatingR < 0.2%R < 0.025%
Dual ARR < 0.25%R < 0.1%
Dichroic %RRs > 99.8%Rs > 99.95%
Dichroic %TT > 95%T > 99%
Partial %R± 1-2%± 0.5%
Ext. Ratio Tp/ts> 750:1> 10,000:1