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Theoretical and experimental studies of the spectral changes of a focused polychromatic partially coherent flat-topped beam.
- Source :
-
Applied Physics B: Lasers & Optics . Mar2015, Vol. 118 Issue 3, p481-487. 7p. - Publication Year :
- 2015
-
Abstract
- An analytical propagation formula for a focused polychromatic partially coherent flat-topped beam with circular symmetry is derived in a tensor form that is based on the alternative flat-top beams model proposed by Li (Opt Lett 27:1007, ). The dependence of the relative spectral shift on the flat-top order N is investigated numerically in detail. It is shown that the on-axis maximum relative spectral shift occurs at the back focal plane, while the no spectral shift observes at the image plane. Furthermore, we report the experimental generation of a polychromatic partially coherent FT beam. The on-axis and off-axis spectral measurement verifies the theoretical study. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09462171
- Volume :
- 118
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- Applied Physics B: Lasers & Optics
- Publication Type :
- Academic Journal
- Accession number :
- 100883618
- Full Text :
- https://doi.org/10.1007/s00340-015-6016-1