Observation of electromagnetically induced Talbot effect in an atomic system Article Swipe
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· 2018
· Open Access
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· DOI: https://doi.org/10.1103/physreva.97.013603
· OA: W2567295502
We experimentally demonstrate the Talbot effect resulting from the repeated\nself-reconstruction of a spatially intensity-modulated probe field under the\nFresnel near-field regime. By launching the probe beam into an optically\ninduced atomic lattice (established by interfering two coupling fields) inside\na rubidium vapor cell, we can obtain an diffracted probe beam pattern from an\nformed electromagnetically induced grating (EIG) in a three-level\n$\\Lambda$-type Doppler-free atomic configuration with the assistance of\nelectromagnetically induced transparency (EIT). The EIG-based diffraction\npattern repeats itself at the planes of integer multiple Talbot lengths, which\nagrees well with the theoretical prediction [Appl. Phys. Lett., 98, 081108\n(2011)]. In addition, fractional EIT-induced Talbot effect was also\ninvestigated. Such experimentally demonstrated EIT Talbot effect in a\ncoherently-prepared atomic system may pave a way for lensless and\nnondestructive imaging of ultracold atoms and molecules, and further\ndemonstrating nonlinear/quantum beam dynamical features predicted for\nestablished periodic optical systems.\n
