Back to Search
Start Over
Nonparaxial analysis of far-field properties of Gaussian beams diffracted at a circular aperture.
- Source :
-
Optics express [Opt Express] 2003 Jun 30; Vol. 11 (13), pp. 1474-80. - Publication Year :
- 2003
-
Abstract
- On the basis of angular spectrum representation and the stationary-phase method, a far-field expression for nonparaxial Gaussian beams diffracted at a circular aperture is derived, which permits us to study the far-field nonparaxial properties of apertured Gaussian beams both analytically and numerically. It is shown that for the apertured case, the f -parameter and the truncation parameter affect the beam's far-field properties. The f -parameter plays the more important role in determining the beam nonparaxiality than does the truncation parameter, whereas the truncation parameter additionally influences the beam diffraction. A comparison with the paraxial case is made. For the unapertured case our results reduce to the previous ones.
Details
- Language :
- English
- ISSN :
- 1094-4087
- Volume :
- 11
- Issue :
- 13
- Database :
- MEDLINE
- Journal :
- Optics express
- Publication Type :
- Academic Journal
- Accession number :
- 19466019
- Full Text :
- https://doi.org/10.1364/oe.11.001474