Abstract
Temporal focusing (TF) allows for axially confined wide-field multi-photon excitation at the temporal focal plane. For temporally focused Gaussian beams, it was shown both theoretically and experimentally that the temporal focus plane can be shifted by applying a quadratic spectral phase to the incident beam. However, the case for more complex wave-fronts is quite different. Here we study the temporal focus plane shift (TFS) for a broader class of excitation profiles, with particular emphasis on the case of temporally focused computer generated holography (CGH) which allows for generation of arbitrary, yet speckled, 2D patterns. We present an analytical, numerical and experimental study of this phenomenon. The TFS is found to depend mainly on the autocorrelation of the CGH pattern in the direction of the beam dispersion after the grating in the TF setup. This provides a pathway for 3D control of multi-photon excitation patterns.
| Original language | English |
|---|---|
| Pages (from-to) | 7087-7098 |
| Number of pages | 12 |
| Journal | Optics Express |
| Volume | 22 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 2014 |
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ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
Cite this
When can temporally focused excitation be axially shifted by dispersion. / Leshem, B.; Hernandez, O.; Papagiakoumou, E.; Emiliani, V.; Oron, Dan.
In: Optics Express, Vol. 22, No. 6, 2014, p. 7087-7098.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - When can temporally focused excitation be axially shifted by dispersion
AU - Leshem, B.
AU - Hernandez, O.
AU - Papagiakoumou, E.
AU - Emiliani, V.
AU - Oron, Dan
PY - 2014
Y1 - 2014
N2 - Temporal focusing (TF) allows for axially confined wide-field multi-photon excitation at the temporal focal plane. For temporally focused Gaussian beams, it was shown both theoretically and experimentally that the temporal focus plane can be shifted by applying a quadratic spectral phase to the incident beam. However, the case for more complex wave-fronts is quite different. Here we study the temporal focus plane shift (TFS) for a broader class of excitation profiles, with particular emphasis on the case of temporally focused computer generated holography (CGH) which allows for generation of arbitrary, yet speckled, 2D patterns. We present an analytical, numerical and experimental study of this phenomenon. The TFS is found to depend mainly on the autocorrelation of the CGH pattern in the direction of the beam dispersion after the grating in the TF setup. This provides a pathway for 3D control of multi-photon excitation patterns.
AB - Temporal focusing (TF) allows for axially confined wide-field multi-photon excitation at the temporal focal plane. For temporally focused Gaussian beams, it was shown both theoretically and experimentally that the temporal focus plane can be shifted by applying a quadratic spectral phase to the incident beam. However, the case for more complex wave-fronts is quite different. Here we study the temporal focus plane shift (TFS) for a broader class of excitation profiles, with particular emphasis on the case of temporally focused computer generated holography (CGH) which allows for generation of arbitrary, yet speckled, 2D patterns. We present an analytical, numerical and experimental study of this phenomenon. The TFS is found to depend mainly on the autocorrelation of the CGH pattern in the direction of the beam dispersion after the grating in the TF setup. This provides a pathway for 3D control of multi-photon excitation patterns.
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U2 - 10.1364/OE.22.007087
DO - 10.1364/OE.22.007087
M3 - Article
VL - 22
SP - 7087
EP - 7098
JO - Optics Express
JF - Optics Express
SN - 1094-4087
IS - 6
ER -