Real-Time Near-Field Terahertz Field Imaging
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Terahertz induced Rydberg atomic fluorescence is photographed to make an image of a Terahertz standing wave. We measure the fluorescence spectrum and the sensitivity bandwidth, and investigate the (sub-wavelength) resolution limit set by atomic motion. The camera signal is calibrated using Rydberg electrometry. Consecutive frames from a 25 Hz video are presented, demonstrating the real-time capability of this technique.
KeywordsTerahertz (THz) THz Field Rydberg Atoms Sensitivity Bandwidth Camera Signal
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