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Shaken granular lasers.

Viola Folli1, Andrea Puglisi, Luca Leuzzi

  • 1ISC-CNR, Unit of University Sapienza, Piazzale Aldo Moro 5, 00185, Rome, Italy.

Physical Review Letters
|September 26, 2012
PubMed
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Laser emission from shaken granular materials is controllable. This study demonstrates that the motion status of granular matter influences laser output, revealing potential for optical applications in disordered photonics.

Area of Science:

  • Physics
  • Photonics
  • Materials Science

Background:

  • Granular materials exhibit numerous metastable states and sensitivity to particle arrangement.
  • These systems are primarily influenced by mechanical forces rather than thermal effects.
  • Laser emission from shaken granular matter remains an unexplored area.

Purpose of the Study:

  • To investigate the effect of granular material motion on laser emission.
  • To explore the potential of disordered granular systems for optical applications.
  • To observe and analyze competitive random laser phenomena in this context.

Main Methods:

  • Experimental manipulation of shaken granular matter.
  • Observation and analysis of laser emission characteristics.

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  • Characterization of the influence of material motion on optical output.

    • Main Results:

    • Laser emission is demonstrably affected and controlled by the motion status of the granular material.
    • Competitive random laser behavior was observed.
    • The study highlights the optical potential of gravity-affected moving disordered materials.

    Conclusions:

    • Shaken granular matter can be utilized to control laser emission.
    • Disordered granular systems offer novel avenues for optical applications.
    • This research bridges statistical mechanics and disordered photonics for interdisciplinary investigations.