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<p>This review highlights recent advances in the creation of atomic population gratings using multi-cycle and extremely short light pulses in a medium. The application of these structures in transient grating spectroscopy is discussed. Special attention is given to the formation of high-quality dynamic microcavities, a novel type of structure recently predicted by the authors, which arises from collisions of extremely short half-cycle pulses within a medium. The results demonstrate the potential for attosecond optical switching of matter states at petahertz frequencies, operating within extreme time scales of half a field oscillation cycle. These findings pave the way for groundbreaking applications in modern ultrafast optics, including petahertz-scale signal processing, attosecond coherent control, and the development of next-generation optical technologies operating at the fundamental limits of speed and precision.</p>

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Dynamic Population Difference Gratings and Microcavities Induced by Extremely Short Pulses: Recent Advances and Future Prospects (Brief Review)

  • 期刊论文

  • 发表日期：

    2025年3月24日

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  • R. M. Arkhipov,
  • O. O. Diachkova,
  • M. V. Arkhipov,
  • A. V. Pakhomov,
  • N. N. Rosanov

摘要

This review highlights recent advances in the creation of atomic population gratings using multi-cycle and extremely short light pulses in a medium. The application of these structures in transient grating spectroscopy is discussed. Special attention is given to the formation of high-quality dynamic microcavities, a novel type of structure recently predicted by the authors, which arises from collisions of extremely short half-cycle pulses within a medium. The results demonstrate the potential for attosecond optical switching of matter states at petahertz frequencies, operating within extreme time scales of half a field oscillation cycle. These findings pave the way for groundbreaking applications in modern ultrafast optics, including petahertz-scale signal processing, attosecond coherent control, and the development of next-generation optical technologies operating at the fundamental limits of speed and precision.