2018
DOI: 10.1063/1.5053810
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Bloch-Siegert effects in two-photon excitations: Fixed laser-molecule configurations versus orientational averaging

Abstract: The two-level rotating wave approximation for two-photon excitations in dipolar molecules is modified to include the effects of the Bloch-Siegert shift in the two-photon resonance energy. The resulting analytical results are used to establish a criterion for when Bloch-Siegert effects are important and the relevance of these effects are compared for fixed laser-molecule configurations versus orientationally averaged results. Two-level model molecules, with parallel permanent and transition dipoles, are used in… Show more

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Cited by 3 publications
(1 citation statement)
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“…This work also uses multi-photon assisted transition, which is widely adopted when a desired transition is dipole forbidden [15,16,[30][31][32][33][34][35][36][37][38][39][40][41][42]. In a perspective that the studies of multi-photon transition beyond the RWA are mainly limited to theoretical cases [43][44][45], our work would attract attention.…”
mentioning
confidence: 99%
“…This work also uses multi-photon assisted transition, which is widely adopted when a desired transition is dipole forbidden [15,16,[30][31][32][33][34][35][36][37][38][39][40][41][42]. In a perspective that the studies of multi-photon transition beyond the RWA are mainly limited to theoretical cases [43][44][45], our work would attract attention.…”
mentioning
confidence: 99%