FOCAL PROPERTIES OF A PLANE GRATING IN A CONVERGENT BEAM,
Abstract
Focusing from a plane grating can be accomplished by using convergent radiation incident on the grating in such a manner that any incident angle and the resulting diffraction angle will be on the same side of the grating normal. The theory for the focal properties is developed by applying Fermat's principle of least time to selected terms resulting from a finite series expansion of the system's distance function. Derivations are given for finding the focal curve equation, astigmatism and coma, of the most usable configuration of the optical components. Discussions of the aberrations disclose methods for eliminating the astigmatism and reducing the coma. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1966
- Accession Number
- AD0641815
Entities
People
- James T. Hall
Organizations
- Atmospheric Sciences Laboratory