ac Stark-mediated quantum control with femtosecond two-color laser pulses

Journal Article · Tue Nov 15 04:00:00 EST 2005 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.72.0· OSTI ID:20786436

Serrat, Carles ^[1]

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1. Departament de Fisica i Enginyeria Nuclear, Universitat Politecnica de Catalunya, Colom 11, 08222 Terrassa (Spain)

A critical dependence of the quantum interference on the optical Stark spectral shift produced when two-color laser pulses interact with a two-level medium is observed. The four-wave mixing of two ultrashort phase-locked {omega}-3{omega} laser pulses propagating coherently in a two-level system depends on the pulses' relative phase. The phase dominating the efficiency of the coupling to the anti-Stokes Raman component is found to be determined by the sign of the total ac Stark shift induced in the system, in such a way that the phase sensitivity disappears precisely where the ac Stark effect due to both pulses is compensated. A coherent control scheme based on this phenomenon can be contemplated as the basis for nonlinear optical spectroscopy techniques.

• OSTI ID: 20786436
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 5 Vol. 72; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
COLOR
COUPLING
EFFICIENCY
FREQUENCY MIXING
INTERFERENCE
LASER RADIATION
LASERS
NONLINEAR PROBLEMS
OPTICS
PHOTON-ATOM COLLISIONS
PULSES
RAMAN EFFECT
SENSITIVITY
SPECTRAL SHIFT
SPECTROSCOPY
STARK EFFECT
VELOCITY