Job Coatings
Coating of customer supplied substrates
Coatings
LASER COMPONENTS also offers job coatings for all standard and custom coatings. For example, we made a name for ourselves with the coating of adaptive mirror substrates (i.e. substrates that can actively adapt their surface). Customers can send us their special substrates for coating. Coatings in the range from 193 nm to 5000 nm can all be done.
We coat our own as well as customer supplied substrates with diameters ranging from 4 to 200 mm. Our own machine shop can manufacture holders for substrates with special dimensions.
Rush jobs within 24 hours are available upon request.
IAD Coating for High Power Laser Optics
The high quality of our ion-assisted deposition coatings for high power laser optics leads users to ever bolder applications. We know from our customers that a permanent exposure to a laser with 2.5 J/cm2 at 1064 nm (90 ns pulse length, 1 kHz repetition rate) does not harm the IAD layers.
In this particular case an output coupler for an Nd:YAG laser has been IAD coated. The high damage threshold is necessary because the laser beam hits the output coupler with an extremely small beam waist.
Several other users have told us in the meantime about comparably good results. This has at least doubled the damage threshold of our IAD coatings.
During the IAD coating process the layer growing on the substrate is shot with oxygen or noble gas ions. This allows the coating material to be distributed evenly and very compact on the substrate surface.
Water molecules have virtually no opportunity anymore to enter the dielectric layer. Therefore, IAD coatings are particularly suitable for the wavelength range from 1 – 3 µm (where the high light absorption of the incorporated water is dramatically noticeable using conventional mirrors).
All users can benefit from both the low drift of the spectral properties during thermal stress and the high mechanical and chemical endurance of the layers.
Since no user has been able to destroy our mirrors yet (using a laser beam) we do not have exact values for the upper power limit. Therefore, be brave! Just tell us your specifications.
