Harvard Researchers Develop Large-Scale, High-Resolution Metalens
The 10cm diameter glass metalens, capable of imaging celestial bodies, can be mass produced using conventional technology and withstands extreme conditions.
- Researchers at the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) have developed a 10-centimeter-diameter glass metalens that can image the sun, the moon and distant nebulae with high resolution.
- The metalens is the first all-glass, large-scale metalens in the visible wavelength that can be mass produced using conventional CMOS fabrication technology.
- The team developed a technique to stitch together several patterns of nanopillars using the DUV projection lithography tool, overcoming the limitation of chip size restricted to no more than 20 to 30 millimeters.
- The researchers demonstrated the power of the metalens in imaging celestial objects, capturing very detailed images of the sun, the moon and the North America nebula.
- The lens could survive exposure to extreme heat, extreme cold and the intense vibrations that would occur during a space launch without any damage or loss in optical performance.
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