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Updated: Jul 5, 2026

Femtosecond Laser Filaments for Use in Sub-Diffraction-Limited Imaging and Remote Sensing
Published on: April 25, 2019
Femtosecond Kerr-gated wide-field fluorescence microscopy
Lars Gundlach1, Piotr Piotrowiak
1Department of Chemistry, Rutgers University-Newark, 73 Warren Street, Newark, New Jersey 07102, USA. larsg@andromeda.rutgers.edu
Abstract:
We present a Kerr-gated microscope capable of collecting diffraction-limited 2D fluorescence images with sub-100 fs time resolution. The concept is based on the insertion of a solid-state optical Kerr gate into a wide-field microscope. In addition to the considerably improved temporal resolution, the wide-field design allows for simultaneous tracking of several objects and ultrafast fluorescence lifetime imaging of doped and heterogeneous surfaces. The ultrafast fluorescence dynamics of gold nanoparticles is presented as an example of the capabilities of the instrument.
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