Beam propagation - Near-field, far-field, or left-field
Abstract
The concepts of near-field region, far-field region, Fraunhofer diffraction, and Fresnel diffraction, are reviewed, defined, and explained, in order to minimize confusion accompanying the use of these commonly applied concepts. The importance of the distinctions to measurement of beam characteristics and the applicability of compact analytical equations are considered.
- Publication:
-
Electro Optical Systems Design
- Pub Date:
- December 1975
- Bibcode:
- 1975EOSD........14W
- Keywords:
-
- Far Fields;
- Fresnel Diffraction;
- Laser Applications;
- Light Beams;
- Near Fields;
- Beam Splitters;
- Optical Measurement;
- Thermal Blooming;
- Lasers and Masers