Comparative simulations of Fresnel holography methods for atomic waveguides

@article{Henderson2016ComparativeSO,
  title={Comparative simulations of Fresnel holography methods for atomic waveguides},
  author={Victoria A. Henderson and Paul F. Griffin and Erling Riis and Aidan S. Arnold},
  journal={New Journal of Physics},
  year={2016},
  volume={18}
}
We have simulated the optical properties of micro-fabricated Fresnel zone plates (FZPs) as an alternative to spatial light modulators for producing non-trivial light potentials to trap atoms within a lensless Fresnel arrangement. We show that binary (1 bit) FZPs with wavelength (1 μm) spatial resolution consistently outperform kinoforms of spatial and phase resolution comparable to commercial SLMs in root mean square error comparisons, with FZP kinoforms demonstrating increasing improvement for… 
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Background Citations
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Methods Citations
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6 Citations

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References

SHOWING 1-10 OF 44 REFERENCES

Feedback-enhanced algorithm for aberration correction of holographic atom traps

We show that a phase-only spatial light modulator can be used to generate non-trivial light distributions suitable for trapping ultracold atoms, when the hologram calculation is included within a…

Multi-wavelength holography with a single spatial light modulator for ultracold atom experiments.

A method to independently and arbitrarily tailor the spatial profile of light of multiple wavelengths and show possible applications to ultracold atoms experiments is demonstrated.

3D mapping of intensity field about the focus of a micrometer-scale parabolic mirror.

The fabrication and diffraction-limited characterization of parabolic focusing micromirrors are reported, yielding strong agreement between experiment and theory, and identifying the competition between diffraction and focusing in the regime probed is identified.

Single-Atom Trapping in Holographic 2D Arrays of Microtraps with Arbitrary Geometries

We demonstrate single-atom trapping in two-dimensional arrays of microtraps with arbitrary geometries. We generate the arrays using a Spatial Light Modulator (SLM), with which we imprint an…

Robust Digital Holography For Ultracold Atom Trapping

An improved algorithm for design of arbitrary two-dimensional holographic traps for ultracold atoms is formulated and experimentally demonstrated, which allows for creation of holographic atom traps with a well defined background potential and incorporates full Helmholtz propagation into calculations.

Precise shaping of laser light by an acousto-optic deflector.

The versatility of this laser beam shaping method is demonstrated by generating potentials with large flat-topped regions as well as intensity patterns that compensate for residual external potentials to create a uniform background to which the trapping potential of experimental interest can be added.

A high-accuracy algorithm for designing arbitrary holographic atom traps.

A new iterative Fourier-transform algorithm for creating holograms that can diffract light into an arbitrary two-dimensional intensity profile is reported, which outperforms the most frequently used alternatives typically by one and two orders of magnitude in accuracy and roughness.

Phase-space properties of magneto-optical traps utilising micro-fabricated gratings.

A detailed theoretical and experimental investigation of the on-chip magneto-optical trap temperature and density in four different chip geometries using (87)Rb, whilst studying effects due to MOT radiation pressure imbalance.

Extending dark optical trapping geometries.

New counterpropagating geometries are presented for localizing ultracold atoms in the dark regions created by the interference of Laguerre-Gaussian laser beams and the dark nature of these traps will enable their use as versatile tools for low-decoherence atom interferometry with zero differential light shifts.

Conjugate gradient minimisation approach to generating holographic traps for ultracold atoms.

It is shown that the careful design of cost functions, combined with numerically efficient conjugate gradient minimisation, establishes a practical method for the generation of holograms for a wide range of target light distributions, with a crucial advantage illustrated by the ability to circumvent optical vortex formation during hologram calculation.