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Programming scale-free optics in disordered ferroelectrics.

Jacopo Parravicini1, Claudio Conti, Aharon J Agranat

  • 1Dipartimento di Fisica, Università di Roma La Sapienza, 00185 Roma, Italy. jacopo.parravicini@univaq.it

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|June 29, 2012
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Summary
This summary is machine-generated.

We show scale-free optical propagation in a lithium-enriched potassium tantalate niobate crystal by controlling its thermal history. The crystal

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Area of Science:

  • Condensed matter physics
  • Materials science
  • Nonlinear optics

Background:

  • Dipolar glasses exhibit complex history-dependent behavior.
  • Potassium tantalate niobate (KTN) crystals are known for their electro-optic properties.
  • Disordered materials can display unique physical phenomena.

Purpose of the Study:

  • To investigate the history dependence of optical propagation in KTN:Li crystals.
  • To demonstrate scale-free optical propagation.
  • To establish tunable temperature control over this phenomenon.

Main Methods:

  • Utilizing the history dependence of a dipolar glass.
  • Employing a compositionally disordered lithium-enriched potassium tantalate niobate (KTN:Li) crystal.
  • Controlling the operating equilibration temperature via previous crystal spiralling in the temperature/cooling-rate phase space.

Main Results:

  • Demonstrated scale-free optical propagation.
  • Achieved tunable temperature control of the propagation.
  • Established a link between thermal history and optical behavior.

Conclusions:

  • The history dependence of dipolar glasses can be harnessed for controlled optical propagation.
  • Scale-free optical propagation is achievable in KTN:Li crystals.
  • Thermal history offers a novel method for tuning optical properties.