Gaussian beam photothermal single particle microscopy.

@article{Selmke2012GaussianBP,
  title={Gaussian beam photothermal single particle microscopy.},
  author={M. Selmke and Marco Braun and F. Cichos},
  journal={Journal of the Optical Society of America. A, Optics, image science, and vision},
  year={2012},
  volume={29 10},
  pages={
          2237-41
        }
}
  • M. Selmke, Marco Braun, F. Cichos
  • Published 2012
  • Materials Science, Physics, Medicine
  • Journal of the Optical Society of America. A, Optics, image science, and vision
We explore the intuitive lensing picture of laser-heated nanoparticles occurring in single particle photothermal (PT) microscopy. The effective focal length of the thermal lens (TL) is derived from a ray-optics treatment and used to transform the probing focused Gaussian beam with ABCD Gaussian matrix optics. The relative PT signal is obtained from the relative beam-waist change far from the TL. The analytical expression is semiquantitative, capable of describing the entire phenomenology of… Expand
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