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arXiv · 2510.17075

Broadband and wide-angle beam deflection enabled by dynamically reconfigurable meta-arrays

Koffi-Emmanuel Sadzi·Abdoulaye Ndao
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Abstract

We present a structurally simple yet functionally ver- satile reflective meta-array composed of phase-change Antimony trisulfide (Sb2S3) nanorods enabling broad- band and wide-angle beam deflection in near-infrared. The device achieves over 80% deflection efficiency over a 1000 nm wide passband, and covering from O-band (1260 nm-1360 nm) to U-band (1565 nm-1625 nm) in the amorphous state. Meanwhile, in its crystalline state, we see a reduction of the efficiency to 40% on average with a maximum passband of 800 nm over the C-band. Moreover, its simple architecture simultaneously en- ables spectral filtering and beam splitting, delivering a compact, multifunctional solution optimized for high power applications.

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Koffi-Emmanuel Sadzi, Abdoulaye Ndao. 2025-10-20. Broadband and wide-angle beam deflection enabled by dynamically reconfigurable meta-arrays. https://arxiv.org/abs/2510.17075

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