Characterization of a Far-Field Microwave Magnetic Field Strength Sensor Based on Double Radiooptical Resonance

• Published in: IEEE transactions on electromagnetic compatibility Vol. 52; no. 1; pp. 21 - 31
• Main Authors: Cetintas, M., Hamid, R., Sen, O., Cakir, S.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.02.2010; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Amplitudes; Applied sciences; Atomic beams; Atomic measurements; Cesium atom; Electronics; Exact sciences and technology; far field; field probe; field strength; Fluctuation; free space; General equipment and techniques; Instruments, apparatus, components and techniques common to several branches of physics and astronomy; Investigations; Laser beams; laser spectroscopy; Lasers; Magnetic devices; Magnetic fields; Magnetic resonance; Masers; Microwave measurements; Microwaves; Optical sensors; Physics; Power lasers; Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices; Sensors; Sensors (chemical, optical, electrical, movement, gas, etc.); remote sensing; Statistics; Free field; Wireless telecommunication; Measurement sensor; Far field; Time response; Time variation; field probe; Magnetic sensors; Free space propagation; Microwave field; Cesium atom; field strength; Laser spectroscopy; Magnetic field; Isotropic material; free space
• DOI: 10.1109/TEMC.2009.2038227
• ISSN: 0018-9375

We experimentally investigated the resonance interaction of laser and microwave fields with 133 Cs atomic gas in far-field and free-space conditions. The observed double radiooptical resonance (DROR) on the D 2 line of Cs atoms was used as a novel-type field sensor, based on the laser spectroscopy technique, for the detection and investigation of the time-varying magnetic field. The effects of the Cs cell length, both laser and microwave powers, and their polarizations to the changing amplitude of the DROR signal were investigated. Almost linear dependencies of the DROR signal amplitude with both laser and microwave powers have been observed. The splitting of DROR signal under a constant magnetic field was detected. The time response of the sensor system was investigated under pulsed microwave. The amplitude fluctuation of the microwave magnetic field was measured using the DROR signal and the isotropic probe simultaneously. The stability of amplitude fluctuations of the microwave field with time was analyzed by using Allan variance statistics.