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

Area of Science:

• Atomic, Molecular & Optical Physics
• Laser Physics
• Optical Engineering

Background:

• Precise control over light's spatial profile is crucial for advanced experiments.
• Existing methods for multi-wavelength light shaping are often complex or limited.
• Applications in ultracold atom experiments require tailored light fields.

Purpose of the Study:

• To demonstrate a novel method for independently tailoring the spatial light profiles of multiple wavelengths.
• To show the applicability of this technique in ultracold atom experiments.
• To provide a flexible and accessible tool for optical manipulation.

Main Methods:

• Utilizing a single spatial light modulator (SLM) programmed with specific patterns.
• Illuminating the SLM with overlapped laser beams of different wavelengths (670 nm, 780 nm, 1064 nm).
• Employing regional phase calculation algorithms to design wavelength-dependent structure separations.

Main Results:

• Successfully generated multiple, spatially separated light structures in the Fourier plane.
• Achieved precise control over the overlap of structures at different wavelengths.
• Demonstrated experimental scenarios with high accuracy (within a few percent).

Conclusions:

• The developed technique allows arbitrary and independent tailoring of multi-wavelength spatial light profiles.
• This method is easily integrated into cold atom experiments with minimal optical access requirements.
• Offers a versatile tool for manipulating light fields in various scientific applications.