Coherent Population Trapping Resonances in Cs Atomic Vapor Layers of Micrometric Thickness
Sign reversal of the CPT resonance with the light intensity observed for the transition in cell. Two different temperatures of the atomic source are used: 34°C (a) and 40°C (b). At 40°C, the sign-reversal process is observed for lower light intensity (0.45 mW/cm2) as compared to T = 34°C, where the effect is observed at 0.94 mW/cm2.
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