Coherent population trapping resonances with linearly polarized light for all-optical miniature atomic clocks

• Published in: arXiv.org
• Main Authors: Zibrov, Sergei A, Novikova, Irina, Phillips, David F, Walsworth, Ronald L, Zibrov, Alexander S, Velichansky, Vladimir L, Taichenachev, Alexey V, Yudin, Valery I
• Format: Paper Journal Article
• Language: English
• Published: Ithaca Cornell University Library, arXiv.org 26.12.2009
• Subjects: Atomic clocks; Linear polarization; Luminous intensity; Physics - Atomic Physics; Physics - Optics; Polarized light; Trapping
• ISSN: 2331-8422
• DOI: 10.48550/arxiv.0910.4703

We present a joint theoretical and experimental characterization of the coherent population trapping (CPT) resonance excited on the D1 line of 87Rb atoms by bichromatic linearly polarized laser light. We observe high-contrast transmission resonances (up to 25%), which makes this excitation scheme promising for miniature all-optical atomic clock applications. We also demonstrate cancellation of the first-order light shift by proper choice of the frequencies and relative intensities of the two laser field components. Our theoretical predictions are in good agreement with the experimental results.