We experimentally demonstrate a silicon photonic optical phased array with a two-dimensional matrix of antennas optimized to emit light over a large fraction of the array surface. The high fill factor yields a low-divergence beam that carries a significant share of the emitted power, at the cost of a reduced steering range, a trade-off well suited to phase-front correction in optical wireless communication systems.
Read the paper: Optics Express 33, 3554–3561 (2025), doi: 10.1364/OE.543258
Figure reproduced from W. K. K. Kan et al., Optics Express 33, 3554–3561 (2025). © 2025 Optica Publishing Group, published under the terms of the Optica Open Access Publishing Agreement.