Optimal design of computer-generated holograms to minimize sensitivity to fabrication errors

Ping Zhou, James H. Burge
2007 Optics Express  
Aspheric optical surfaces are often tested using computergenerated holograms (CGHs). The etching of the CGH pattern must be highly accurate to create desired wavefronts. Variations of line width, etching depth, and surface roughness cause unwanted wavefront errors. The sensitivity to these manufacturing errors is studied using scalar diffraction analysis. We provide a parametric model that can be used for optimizing the CGH design to give good diffraction efficiency and limited sensitivity to
more » ... ed sensitivity to manufacturing errors.
doi:10.1364/oe.15.015410 pmid:19550826 fatcat:6dfcvykucvf5rdntpzoyq6pr4m