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High-contrast coherent population trapping based on crossed polarizers method.
- Source :
-
IEEE Transactions on Ultrasonics Ferroelectrics & Frequency Control . Dec2014, Vol. 61 Issue 12, p1953-1960. 8p. - Publication Year :
- 2014
-
Abstract
- A method based on crossed polarizers to observe high-contrast coherent population trapping (CPT) resonance has been developed. Because crossed polarizers have a simple optical system, our method is suitable for chip-scale atomic clocks (CSACs). In CPT, the Faraday rotation in a linearly polarized light field (lin||lin) was calculated using two pairs of ?-system models; the spectrum of the Faraday rotation is also estimated. After measuring the contrast and linewidth with the crossed-polarizer method, a comparison of the theoretical model and experimental data showed they were in good agreement. Moreover, the experimental results showed that a high contrast (88.4%) and narrow linewidth (1.15 kHz) resonance could be observed using a Cs gas cell and D1-line verticalcavity surface-emitting laser (VCSEL). [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 08853010
- Volume :
- 61
- Issue :
- 12
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Ultrasonics Ferroelectrics & Frequency Control
- Publication Type :
- Academic Journal
- Accession number :
- 100028554
- Full Text :
- https://doi.org/10.1109/TUFFC.2014.006623