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Optica Publishing Group
  • International Quantum Electronics Conference
  • 1996 OSA Technical Digest Series (Optica Publishing Group, 1996),
  • paper TuL62

Magnetometry with coherent dark states

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Abstract

In a three-level lambda system (two ground states, one excited state) coherent dark resonances can occur when two laser light fields, each one resonant with the transition from one of the ground states to the excited state, are simultaneously present. The atomic population is pumped into a coherent superposition of the two ground states that does not absorb light from the lasers. For mutually coherent lasers the width of the resonance line can be extremely small. Since its position is shifted by an applied magnetic field the steep slope of this resonance line allows accurate determinations of magnetic fields [1], Sensitivities of 10-12 T have been predicted theoretically [2,3].

© 1996 Optical Society of America

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