Journal
LIGHT-SCIENCE & APPLICATIONS
Volume 7, Issue -, Pages -Publisher
CHINESE ACAD SCIENCES, CHANGCHUN INST OPTICS FINE MECHANICS AND PHYSICS
DOI: 10.1038/s41377-018-0055-4
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Funding
- Los Alamos National Laboratory LDRD Program
- AFOSR [FA9550-12-0491]
- AFOSR YIP program [FA9550-16-1-0183]
- National Nuclear Security Administration of the U.S. Department of Energy [DEAC52-06NA25396]
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During the past decades, major advances have been made in both the generation and detection of infrared light; however, its efficient wavefront manipulation and information processing still encounter great challenges. Efficient and fast optoelectronic modulators and spatial light modulators are required for mid-infrared imaging, sensing, security screening, communication and navigation, to name a few. However, their development remains elusive, and prevailing methods reported so far have suffered from drawbacks that significantly limit their practical applications. In this study, by leveraging graphene and metasurfaces, we demonstrate a high-performance free-space mid-infrared modulator operating at gigahertz speeds, low gate voltage and room temperature. We further pixelate the hybrid graphene metasurface to form a prototype spatial light modulator for high frame rate single-pixel imaging, suggesting orders of magnitude improvement over conventional liquid crystal or micromirror-based spatial light modulators. This work opens up the possibility of exploring wavefront engineering for infrared technologies for which fast temporal and spatial modulations are indispensable.
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