Matt's Blog

Spectroscopy with frequency comb

Fri Apr 28 09:36:00 BST 2006

  • Phys. Rev. Lett. 96, 153001 (2006)
    • Title: High Resolution Atomic Coherent Control via Spectral Phase Manipulation of an Optical Frequency Comb Authors: Matthew C. Stowe, Flavio C. Cruz, Adela Marian, and Jun Ye
    • Abstract: We demonstrate high resolution coherent control of cold atomic rubidium utilizing spectral phase manipulation of a femtosecond optical frequency comb. Transient coherent accumulation is directly manifested by the enhancement of signal amplitude and spectral resolution via the pulse number. The combination of frequency comb technology and spectral phase manipulation enables coherent control techniques to enter a new regime with natural linewidth resolution.
    • Comments: Uses phase stabilized optical frequency comb to perform coherent manipulation of Rb atoms. Multipulse coherent accumulation uses multiple femtosecond pulses to selectively excite the transition amplitude for a particular energy level while not exciting other levels. Atomic coherence persists between femtosecond pulses, leading to the enhancement or supression of two-photon coherent processes depending on the choice of parameters. The use of multiple pulses effectively narrows the frequency spectrum of the femtosecond laser as seen by the atoms, since the total time is increased.

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