Achromatic N-prism beam expanders: optimal configurations
In this paper, we calculate optimal prism configurations for achromatic N-prism beam expanders of a single material; we argue that for moderate to high magnifications, that is M> or approx. =(2-1/(2/sup N/-1-1))/sup N/, the up-up . . . up--down configuration is generally optimal, in the sense that it maximizes the transmission for given magnification. We also derive exact expressions for the incidence and apex angles that optimize a nonachromatic N-prism beam expander of arbitrary materials. The use of simple three-prism (up--up--down) and four-prism (up--up--up--down) single-material achromatic beam expanders is suggested for applications requiring compactness, achromaticity, and temperature stability.
- Research Organization:
- Stanford University, Edward L. Ginzton Laboratory, Stanford, California 94305
- OSTI ID:
- 5563914
- Journal Information:
- Appl. Opt.; (United States), Vol. 24:8
- Country of Publication:
- United States
- Language:
- English
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