Our versatile technology is finely tuned to craft your specific application timely.
Extend the limits with our super polishing and unique, high durability coatings!
Our prices are truly the best on the market and with no compromise for quality
Our background in coating technology counts for over 30 years.
6 month warranty
Take advantage of our unique Ion Beam Super Polishing and Deposition combination, applicable to wide collection of laser crystal materials !
Is super polish correlates with the Laser Induced Damage Threshold (LIDT) ?
It was reported that such correlation may not exist. Instead, the subsurface damage correlates strongly with the laser damage threshold:
Byungil Cho, Andy Lyu, Mark Feldman
Laser induced damage resistance of 266 nm AR coatings
in Proceedings of SPIE – The International Society for Optical Engineering · November 2013
What is the advantage of coatings deposited by Ion Beam Sputtering (IBS) compared to evaporation ?
Due to its high density, IBS optical coating does not absorb atmospheric moisture, so that its reflection spectra is not changed when exposed to the air after deposition in vacuum.
Is the Chemical-Mechanical Polishing (CMP) overperform conventional hand polishing?
Chemical Mechanical Polishing (CMP)
is a machine- defined, precisely controlled deterministic process: once a high polishing quality is achieved , it can be routinely repeated. That is not a case for conventional
manual polishing, which is a hand-defined, non-deterministic process.
What is one step polishing?
When using appropriate polishing materials and methods, a sub-nanometer surface roughness can be achieved even with abrasive particle size as large as 1 micron.This allows to skip intermediate steps between rough lapping and finish polishing thus reducing the fabrication costs.
What is the ion beam polishing?
At UVIR Crystals we developed a process of surface material removal that allows to sputter-off the so called “polishing redeposit” which contributes to optical absorption and laser induced damage.The unique aspect is that the rms surface roughness decreases in course of such ion beam sputtering.
How to handle the LBO crystals?
LBO is moderately sensitive to moisture. Therefore, a main rule of handling LBO crystals is to avoid their contact with humid atmosphere
at RH> 50%. If such contact happened, then dry out the crystals at 60-80C for 3-2 hours and place them in an airtight container with desiccant.
Which solvent is preferable for cleaning LBO crystals ?
ethyl acetate is the best choice because it does not produce as much cooling as acetone during cleaning.
Cooling may cause the damage of LBO due to its high thermal expansion coefficients
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%
