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15

2026

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06

Astronomical Polarimetry Based on Metasurfaces

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The team of Noah A. Rubin at the University of California, San Diego, has unveiled the Solar Imaging Metasurface Polarimeter (SIMPol), a pioneering telescope designed for instantaneous solar imaging and polarization measurements. It employs a high-performance metasurface-based polarization‑analyzing grating, enabling single‑element, real‑time polarization imaging. The authors demonstrate SIMPol’s integration into large‑aperture observatory telescopes and characterize the Zeeman signatures of the solar magnetic field. This work ranks among the first to leverage the advantages of metasurface optics in practical astronomical instrumentation, heralding broader applications of metasurfaces and emerging nanophotonic technologies in astronomy.

The research findings were published in Science Advances on June 10, 2026, under the title “Metasurface-enabled astronomical polarimetry.”

Figure 1: Design and Performance of MPG and SIMPol

Figure 2: Integration with DST

Figure 3: Observing the Solar Magnetic Field Using SIMPol

Figure 4: Longitudinal Magnetic Field

Source: optics, World of Optics

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