Focal shift and focal switch of focused truncated elliptical Gaussian beams
β Scribed by Xinyue Du; Daomu Zhao
- Publisher
- Elsevier Science
- Year
- 2007
- Tongue
- English
- Weight
- 349 KB
- Volume
- 275
- Category
- Article
- ISSN
- 0030-4018
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π SIMILAR VOLUMES
Focal shift of hyperbolic-cosine-Gaussian beams induced by pure phase apodizer was investigated theoretically. The pure phase apodizer consists of three concentric zones: center circle zone, inner annular zone and outer annular zone. And the phase variance of the inner annular zone is adjustable. Re
By introducing a hard aperture function into a finite sum of complex Gaussian functions, an approximate analytical expression predominating the distribution of axial intensity for the flat-topped Mathieu-Gauss (FTMG) beams passing through a system with the aperture and lens separated has been derive