Long wavelength infrared imaging under ambient thermal radiation via an all-silicon metalens
Abstract
Further miniaturization of imaging systems is prevented by the prevalent, traditional bulky refractive optics today. Meta-optics have recently generated great interest in the visible wavelength as a replacement for refractive optics thanks to their low weight, small size, and amenability to high-throughput semiconductor manufacturing. Here, we extend these meta-optics to the long-wave infrared (LWIR) regime and demonstrate imaging with a 2 cm aperture f/1 all-silicon metalens under ambient thermal emission. We showed that even with the strongly chromatic nature of the metalenses, we can perform ambient light imaging, primarily due to the lack of wavelength discrimination in the sensor, as is the norm for an RGB-camera in the visible.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Aug 10, 2021
- Source ID
- 10.1364/ome.434362
Entities
People
- Arka Majumdar
- Ashok Raman
- Karl F. Böhringer
- Kent Hallman
- Luocheng Huang
- Neset Akozbek
- Zachary Coppens
- Zheyi Han
Organizations
- Army Research Office
- CFD Research Corporation (United States)
- University of Washington