Abstract
A new technique for precise focal length measurements by use of a hologram is presented. The hologram is used in first order diffraction to emulate the reflective properties of a convex spherical mirror when performing null tests with a phase-shifting interferometer. The hologram, comprised of concentric reflective rings (much like a Fresnel zone plate), is written lithographically and offers a higher degree of precision, at lower cost, than its spherical mirror counterpart and many other potential measurement techniques.
Original language | English (US) |
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Pages (from-to) | 114-121 |
Number of pages | 8 |
Journal | Proceedings of SPIE - The International Society for Optical Engineering |
Volume | 4832 |
DOIs | |
State | Published - 2002 |
Event | International Optical Design Conference 2002 - Tucson, AZ, United States Duration: Jun 3 2002 → Jun 5 2002 |
Keywords
- Diffractive optics
- Focal length
- Hologram
- Optical testing
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering