Abstract

It is well known, experimentally as well as theoretically, that multi-photon (MP) resonances and Bloch-Siegert (BS) shifts can occur in strongly driven quantum mechanical two-level systems.^[1,2,3] These phenomena occur in the two-level system as a result of the violation of the rotating wave approximation (RWA). The counter-rotating part of the field gives rise to qualitatively different dynamics, e. g. the MP resonances and the BS shifts. We report here observation of the same phenomena for a classical two-level system, an optical ring resonator, and find good agreement with theory originally developed for its quantum counterpart.

© 1992 IQEC