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Related Experiment Videos

Second-harmonic generation in periodically poled nonlinear polymer waveguides.

Jung Jin Ju1, Jongbae Kim, Jung Yun Do

  • 1Wideband Photonics Device Team, Electronics and Telecommunications Research Institute, Daejeon 305-350, Korea. jjju@etri.re.kr

Optics Letters
|January 15, 2004
PubMed
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We achieved efficient quasi-phase-matched (QPM) second-harmonic generation (SHG) in polymer waveguides at optical communication wavelengths. This breakthrough offers a new pathway for nonlinear optical devices.

Area of Science:

  • Nonlinear Optics
  • Materials Science
  • Photonics

Background:

  • Second-harmonic generation (SHG) is crucial for frequency conversion in photonics.
  • Polymer waveguides offer advantages for integrated optical devices.
  • Achieving efficient SHG at communication wavelengths requires precise phase-matching.

Purpose of the Study:

  • To demonstrate quasi-phase-matched (QPM) second-harmonic generation (SHG) in side-chain polymer waveguides.
  • To optimize waveguide design for efficient light confinement and nonlinear interaction.
  • To achieve high SHG efficiency at standard optical communication wavelengths.

Main Methods:

  • Fabrication of side-chain polymer waveguides with a ridge structure.
  • Design of electrodes for quasi-phase-matching (QPM) poling.

Related Experiment Videos

  • Characterization of guided modes and nonlinear optical performance.

    • Main Results:

    • Demonstrated SHG at optical communication wavelengths (e.g., 1550 nm).
    • Achieved high field overlap integral due to optimized fundamental mode guiding.
    • Maximized nonlinearity contrast in a +/-0 type QPM waveguide structure.
    • Recorded a normalized SHG efficiency of 2.2% W⁻¹ cm⁻².

    Conclusions:

    • Side-chain polymer waveguides are suitable for efficient QPM-SHG.
    • The demonstrated device performance is promising for integrated nonlinear optical applications.
    • Optimized waveguide design and poling significantly enhance SHG efficiency.