What has been hardly possible so far now becomes a reality. The complex
coating of temperature-sensitive optics at process temperatures below
100° C is most promising - despite the long coating times required
for such complex structures.
Most coatings are applied in high vacuum at temperatures well above
100° C which has a negative impact on some materials. This can lead
to discoloration or malfunction.
Laser Components has now succeeded in applying a broadband AR coating
on such critical optics using IBS (ion beam sputtering). After coating,
gradient-index (GRIN) optics were able to achieve an average reflection
<1.5% in the range from 400 nm to 1000 nm. This allows a large
wavelength bandwidth and large differences in the angle of incidence to
More Information at http://www.lasercomponents.com/