LBO Optical fabrication standards
Aperture: 2×2 mm to 20×20 mm, Length: 1 to 50 mm.
Aperture tolerance: +0.01 mm/-0.05 mm, Length tolerance: +0.5 mm/-0.2 mm
Scratch/dig: <10/5, Surface roughness: rms<0.3nm
Orientation (θ,ϕ): +/- 20 arcmin
Flatness: < 1/10λ at 633 nm
Parallelism: <60 arcsec, Perpendicularity:<10arcmin
AR Coating
Damage threshold: > 150J/cm2@1064nm, 5ns, 10Hz
Reflectance: 0.1 – 0.3% typical
Electric field optimized design: yes
Environmental condition requirements: Relative Humidity: 0-60%