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💡 What is a metasurface?

Optical metasurfaces are a revolutionary class of materials engineered to manipulate light at the nanoscale level. By utilizing subwavelength arrays of artificially designed nanostructures, metasurfaces can control the amplitude, phase, and polarization of light waves with unprecedented precision.

👩‍🏫 An ambitious metrological challenge?

The optical metrology of metalenses presents unique challenges due to their nanoscale structures and subwavelength operation. Traditional techniques with limited resolution struggle to accurately measure the intricate features of metalenses. Specialized methods such as electron microscopy or scanning probe microscopy are required to achieve subwavelength resolution. Fabrication tolerances also impact metalenses, making precise characterization crucial for assessing their performance. Polarization sensitivity further complicates metrology, necessitating measurements for different polarization states.

Achieving multispectral performance requires advanced techniques with high spectral resolution. Accurate wavefront analysis is essential for evaluating the wavefront shaping capabilities of metalenses. Additionally, environmental stability testing is necessary to ensure their performance under varying conditions.

Overcoming these challenges enables the development and quality control of metalenses for diverse optical applications.

Learn more about how Phasics can help you characterize your metalens here