Papers › Optimal structured light waves generation in 3D volumes using communication mode optics
Optimal structured light waves generation in 3D volumes using communication mode optics
Vinicius S. de Angelis, Ahmed H. Dorrah, Leonardo A. Ambrosio, David A. B. Miller, Federico Capasso
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Achieving precise control of light intensity in 3D volumes is highly in demand in many applications in optics. Various wavefront shaping techniques have been utilized to reconstruct a target amplitude profile within a 3D space. However, these techniques are intrinsically limited by cross-talk and often rely on optimization methods to improve the quality of the reconstruction. We propose and experimentally demonstrate a new wavefront shaping method based on interfering the optimum orthogonal communication modes connecting a source plane and a receiving volume. These optimum modes are computed from the singular value decomposition of a coupling operator that connects each point at the source plane to another one in the receiving volume. The modes comprise a pair of source and receiving eigenfunctions, with each forming a complete orthogonal basis for their respective spaces. We utilize these modes to construct arbitrarily chosen 2D and 3D structured light waves within the output receiving volume and optically generate these waves using a spatial light modulator. Our generated intensity profiles exhibit low cross-talk, high fidelity, and high contrast. We envision our work to inspire new directions in any domain that requires controlling light intensity in 3D with high precision and also to serve as a benchmark for other wavefront shaping techniques.
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