A Refractive-Diffractive Element Design for Resonant Scanner Angular Correction: The Symmetric Beam Retardation Approach (Preprint)
Abstract
We propose a new approach for designing diffractive optical corrective elements with zooming capability to convert nonlinear sinusoidal scanning into linear scanning. Such devices will be useful for linearizing the angular scan of a resonant mirror scanner. The design methodology is to create a graded index of refraction device as the reference design, with its index of refraction parameters based on beam retardation through propagation in an inhomogeneous media. In a new approach, we make explicit use of the symmetry of the optical problem to mathematically derive the form of the refractive gradient. The diffractive element is designed utilizing a binarizing algorithm of the accumulated phase from transmission through the refractive element.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 18, 2008
- Accession Number
- ADA486863
Entities
People
- Bahareh Haji-saeed
- Charles L. Woods
- Jed Khoury
- John Kierstead
Organizations
- Air Force Research Laboratory