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Spatiotemporal focusing, or simultaneous spatial and temporal focusing (SSTF), has already been adopted for various applications in microscopy, photoactivation for biological studies, and laser fabrication. We investigate the effects of aberrations on focus formation in SSTF, in particular, the effects of phase aberrations related to low-order Zernike modes and a refractive index mismatch between the immersion medium and sample. By considering a line focus, we are able to draw direct comparison between the performance of SSTF and conventional spatial focusing (SF). Wide-field SSTF is also investigated and is found to be much more robust to aberrations than either line SSTF or SF. These results show the sensitivity of certain focusing methods to specific aberrations, and can inform on the necessity and benefit of aberration correction.

Original publication

DOI

10.1364/JOSAA.31.000765

Type

Journal article

Journal

J Opt Soc Am A Opt Image Sci Vis

Publication Date

01/04/2014

Volume

31

Pages

765 - 772

Keywords

Lasers, Optical Phenomena, Spatio-Temporal Analysis