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An Atomic Sensor for Direct Detection of Weak Microwave Signals.
- Source :
-
IEEE Transactions on Microwave Theory & Techniques . Aug2019, Vol. 67 Issue 8, p3485-3493. 9p. - Publication Year :
- 2019
-
Abstract
- This paper demonstrates direct detection of weak signals at microwave frequencies based on parametric frequency conversion. The atomic medium is optically pumped by a resonant light field and prepared in a coherent atomic superposition by a weak microwave field. The coherent atomic superposition causes a parametric modulation of the polarization of a probe light field at the microwave field frequency. An upper limit magnetic field component sensitivity of 1.2(1.0) pT/Hz1/2, corresponding to 3.7(3.1)- $\mu $ V/cm/Hz1/2 electric field component sensitivity, is achieved at ~6.835 GHz with a 33-mm3 vapor cell. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00189480
- Volume :
- 67
- Issue :
- 8
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Microwave Theory & Techniques
- Publication Type :
- Academic Journal
- Accession number :
- 138144724
- Full Text :
- https://doi.org/10.1109/TMTT.2019.2921351