High-Resolution Near-Field Imaging and Far-Field Antenna Measurements with Atomic Sensors

D. Anderson, E. Paradis, Georg Raithe, R. Sapiro, M. Simons, C. Holloway
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引用次数: 1

Abstract

Measurements of radio-frequency (RF) electric fields using atomic sensors based on quantum-optical spectroscopy of Rydberg states in vapors has garnered significant interest in recent years for the establishment of atomic standards for RF electric fields and towards the development of novel RF sensing instrumentation. Here we describe recent work employing atomic sensors for sub-wavelength near-field imaging of a Ku- band horn antenna. We demonstrate near-field imaging capability at a spatial resolution of λ/10 and measurements over a 72 to 240 V/m field range using off-resonance AC-Stark shifts of a Rydberg-atom resonance. A fiber-coupled atomic-sensor probe is also employed in far-field measurements of a WR-90 standard gain horn.
原子传感器的高分辨率近场成像和远场天线测量
近年来,基于蒸汽中里德堡态量子光学光谱的原子传感器对射频(RF)电场的测量已经引起了人们对射频电场原子标准的建立和新型射频传感仪器的发展的极大兴趣。在这里,我们描述了最近的工作,利用原子传感器对Ku波段喇叭天线进行亚波长近场成像。我们展示了在λ/10的空间分辨率下的近场成像能力,并使用Rydberg-atom共振的非共振AC-Stark位移在72至240 V/m的场范围内进行测量。光纤耦合原子传感器探头也被用于WR-90标准增益喇叭的远场测量。
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