Ibsen offers custom gratings for many applications
Below is a selected niche application that Ibsen has manufactured gratings for, and we are able to describe the application of or provide a reference.
Achromatic grating interferometer
“Achromatic holographic configuration for 100-nm-period lithography”, Applied Optics / Vol.31, No.22 / 1 August 1992, Anthony Yen, Erik H. Anderson, R.A. Ghanbari, M.L. Schattenburg, Henry Smith (MIT)