Spatial and temporal transformation of femtosecond laser pulses by lenses and lens systems
- 1 July 1992
- journal article
- Published by Optica Publishing Group in Journal of the Optical Society of America B
- Vol. 9 (7), 1158-1165
- https://doi.org/10.1364/josab.9.001158
Abstract
A Fourier-optical analysis of the transformation of ultrashort light pulses by lenses is given. Inserting the material dispersion up to second order, we find a coupling between the temporal, spectral, and spatial properties of the light pulse. In general, this coupling leads to a drastic increase in pulse duration and width of the spatial intensity distribution in the focal plane of the lens, which can be avoided with the use of achromatic lens doublets. The results are discussed for Gaussian-shaped input pulses.Keywords
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