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  • 2013 Conference on Lasers and Electro-Optics - International Quantum Electronics Conference
  • (Optica Publishing Group, 2013),
  • paper CFIE_10_6

Multi-Delay, Phase-Coherent Pulse Pair Generation for Precision Ramsey-Comb Spectroscopy

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Abstract

The realization of optical frequency combs has revolutionized the field of precision metrology [1]. However, these combs typically operate in the near-infrared, while many interesting atomic transitions require wavelengths shorter than 100 nm. Hence high peak power (frequency comb) pulses are required for efficient nonlinear up-conversion of comb lasers. Our approach to realize this goal is based on selective amplification of two frequency comb pulses in a parametric amplifier, and we demonstrated MHz-level extreme ultra-violet frequency comb spectroscopy [2]. The fixed delay of the amplified pulse pairs (maximum ~10 ns) used in [2] limited the achievable accuracy and restricted the method to single-transition recording, as in traditional Ramsey spectroscopy [3]. In addition, the phase-shift introduced by the parametric amplifier had to be monitored carefully to correct the Ramsey-like signals.

© 2013 IEEE

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