A Novel Scheme for Noise Suppression of CPT Resonance

We proposed and demonstrated a continuous wave (CW) version of constructive, destructive & differential detection (CDD) of coherent population trapping resonance (CPT), in which we simultaneously observed electromagnetically induced transparency (EIT) and absorption (EIA) resonances with counter...

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Bibliographic Details
Main Authors: Li, Qinglin, Yang, Tenghui, Yun, Peter
Format: Conference Proceeding
Language:English
Subjects:
Absorption
coherent population trapping (CPT)
common mode noise rejection
differential detection
electromagnetically induced transparency (EIT) and absorption (EIA)
Resonant frequency
Sensors
Sociology
Spectroscopy
Statistics
Time-frequency analysis
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Summary:We proposed and demonstrated a continuous wave (CW) version of constructive, destructive & differential detection (CDD) of coherent population trapping resonance (CPT), in which we simultaneously observed electromagnetically induced transparency (EIT) and absorption (EIA) resonances with counterpropagating pump and probe bichromatic light beams. A differential CPT signal is also obtained with doubled amplitude and suppressed common-mode noise. The enhanced signal-to-noise ratio (SNR) of CPT resonance with one order of magnitude in this novel scheme could beneficial to implement high-performance CPT atomic clocks, as well as atomic sensors, and high-resolution spectroscopy.
ISSN:2327-1949
DOI:10.1109/EFTF/IFCS57587.2023.10272053