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Related Experiment Video

Updated: May 30, 2025

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Rapid stochastic spatial light modulator calibration and pixel crosstalk optimization.

P Schroff, E Haller, S Kuhr

    Optics Express
    |January 29, 2025
    PubMed
    Summary
    This summary is machine-generated.

    We developed a faster calibration technique for holographic light potentials using spatial light modulators (SLMs). This method accurately models experimental setups, improving fidelity in quantum technologies and holographic displays.

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    Area of Science:

    • Quantum technology
    • Optics
    • Atomic physics

    Background:

    • Spatial light modulators (SLMs) are crucial for generating holographic light potentials in quantum applications.
    • High fidelity of these potentials relies on accurate wavefront and intensity calibration.

    Purpose of the Study:

    • To present a novel, faster calibration technique for holographic light potentials.
    • To improve the accuracy and efficiency of wavefront calibration for SLMs.

    Main Methods:

    • Utilized stochastic optimization and random speckle patterns to calibrate a digital twin of the experimental setup.
    • Developed a method to measure wavefronts with high precision (λ/170) in approximately 5 minutes.
    • Incorporated pixel crosstalk modeling into the digital twin for liquid-crystal SLMs.

    Main Results:

    • Achieved wavefront measurement accuracy within λ/170 in just 5 minutes using 10 SLM patterns.
    • Reduced errors in light potentials by a factor of ~5 by modeling pixel crosstalk.
    • Demonstrated a significant speedup compared to existing state-of-the-art calibration techniques.

    Conclusions:

    • The new calibration technique offers a substantial speed improvement while maintaining high accuracy.
    • Digital twin modeling, including pixel crosstalk, enhances the fidelity of holographic light potentials.
    • This method simplifies the implementation of precise light potentials for quantum-gas microscopes, atom tweezer arrays, and holographic displays.