Solid-immersion metalenses for infrared focal plane arrays

  title={Solid-immersion metalenses for infrared focal plane arrays},
  author={Shuyan Zhang and Alexander Soibel and Sam Ang Keo and Daniel W. Wilson and Sir Rafol and David Z.-Y. Ting and Alan She and Sarath D. Gunapala and Federico Capasso},
  journal={Applied Physics Letters},
Novel optical components based on metasurfaces (metalenses) offer a new methodology for microlens arrays. In particular, metalens arrays have the potential of being monolithically integrated with infrared focal plane arrays (IR FPAs) to increase the operating temperature and sensitivity of the latter. In this work, we demonstrate a new type of transmissive metalens that focuses the incident light ({\lambda} = 3-5 {\mu}m) on the detector plane after propagating through the substrate, i.e. solid… 

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