Phys. Rev. A 45, 1810–1815 (1992)Multiphoton resonances and Bloch-Siegert shifts observed in a classical two-level systemReceived 24 September 1991; published in the issue dated February 1992 We report experimental observation of multiphoton resonances and Bloch-Siegert shifts in a strongly driven classical two-level system. The system is an optical ring resonator, and the levels are two orthogonal linear polarizations. The Rabi frequency and the Bloch-Siegert shift were measured for both the one- and three-photon cases. Satisfactory agreement was achieved with theory developed for a quantum two-level system. The experiment demonstrates that these coherence phenomena can be observed in a purely classical system. © 1992 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.45.1810
DOI:
10.1103/PhysRevA.45.1810
PACS:
42.50.Hz, 32.80.Bx
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