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Engineering two-dimensional nonlinear photonic quasi-crystals.

Alon Bahabad1, Ayelet Ganany-Padowicz, Ady Arie

  • 1Department of Physical Electronics, Fleischman Faculty of Engineering, Tel Aviv University, Tel Aviv, Israel. alonuria@gmail.com

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|June 17, 2008
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Summary

Researchers created nonlinear photonic quasi-crystals for efficient optical devices. These quasi-crystals enable arbitrary nonlinear optical processes, demonstrated with frequency doublers for C-band communication wavelengths.

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Area of Science:

  • Photonics
  • Materials Science
  • Nonlinear Optics

Background:

  • Quasi-periodic lattices offer unique optical properties.
  • Controlling nonlinear optical processes in photonic devices is crucial for advanced applications.
  • Existing methods for fabricating nonlinear photonic crystals have limitations.

Purpose of the Study:

  • To develop a method for generating two-dimensional quadratic nonlinear photonic quasi-crystals.
  • To enable efficient and arbitrary nonlinear optical processes within these quasi-crystals.
  • To demonstrate the fabrication of functional optical devices using this approach.

Main Methods:

  • Utilized a known algorithm for modeling quasi-periodic lattices.
  • Generated two-dimensional quadratic nonlinear photonic quasi-crystals with desired spectral components.
  • Fabricated two types of optical devices: a single-frequency doubler and a multifrequency doubler.

Main Results:

  • Successfully generated nonlinear photonic quasi-crystals capable of supporting specific nonlinear optical processes.
  • Demonstrated the fabrication of a multidirectional single-frequency doubler.
  • Showcased a multidirectional, multifrequency doubler for efficient, nearly collinear second-harmonic generation of continuous-wave radiation in the C-band (1530-1570 nm).

Conclusions:

  • The developed algorithm enables the design and fabrication of nonlinear photonic quasi-crystals for tailored optical functionalities.
  • The fabricated devices demonstrate the potential for efficient multidirectional and multifrequency nonlinear optical processes.
  • This work opens avenues for creating advanced optical devices for applications such as optical communications.