Potential landscaping for ultracold atoms using holographic optical traps
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The development of new laser beam shaping methods is important in a variety of fields within optics, atomic physics and biophotonics. Spatial light modulators offer a highly versatile method of time-dependent beam shaping, based on imprinting a phase profile onto an incident laser beam that determines the intensity in the trapping plane laser field. The calculation of the required phase is a well-known inverse problem, which can be tackled with different approaches. Our method based on conjugate gradient minimisation  not only allows the calculation of smooth and accurate intensity profiles suitable for trapping cold atoms, but can also be used to generate multi-wavelength traps  and for simultaneous control over both the intensity and the phase of the light , with exceptionally high reconstruction fidelity. References:  T Harte, et al., "Conjugate gradient minimisation approach to generating holographic traps for ultracold atoms" Opt. Express 22, 26548 (2014)  D Bowman, et al., "Multi-wavelength holography with a single spatial light modulator for ultracold atom experiments" Opt. Express 23, 8365 (2015)  D Bowman, et al., "High-fidelity phase and amplitude control of phase-only computer generated holograms using conjugate gradient minimisation" Opt. Express 25, 11692 (2017)
Bowman , D , Harte , T , Ireland , P , Cassettari , D & Bruce , G D 2017 , ' Potential landscaping for ultracold atoms using holographic optical traps ' , International Conference on Quantum, Atomic, Molecular and Plasma Physics (QuAMP) , Glasgow , United Kingdom , 4/09/17 - 7/09/17 .conference
Non peer reviewed
Copyright 2017 the Authors.
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