Passive frequency conversion of ultraviolet images into the visible using perovskite nanocrystals
Abstract
We demonstrate a passive down-conversion imaging system that converts broadband ultraviolet light to narrow-band green light while preserving the directionality of rays, and thus enabling direct down-conversion imaging. At the same time our system has high transparency in the visible, enabling superimposed visible and ultraviolet imaging. The frequency conversion is performed by a subwavelength-thickness transparent downconverter based on highly efficient CsPbBr3 nanocrystals incorporated into the focal plane of a simple telescope or relay-lens geometry. The resulting imaging performance of this down-conversion system approaches the diffraction limit. This demonstration sets the stage for the incorporation of other high-efficiency perovskite nanocrystal materials to enable passive multi-frequency conversion imaging systems.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Apr 08, 2021
- Source ID
- 10.1088/2040-8986/abf171
Entities
People
- Alireza Shahsafi
- Bryan E. Rubio-perez
- Chenghao Wan
- D N Congreve
- Demeng Feng
- Jad Salman
- Mahesh K Gangishetty
- Michel Frising
- Mikhail A Kats
- Zhaoning Yu
- Zongzhen Yang
Organizations
- Air Force Office of Scientific Research