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Controlling photonic structures using optical forces.

Gustavo S Wiederhecker1, Long Chen, Alexander Gondarenko

  • 1School of Electrical and Computer Engineering, Cornell University, Ithaca, New York 14853, USA.

Nature
|November 17, 2009
PubMed
Summary
This summary is machine-generated.

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Researchers demonstrate precise control over photonic structures using weak optical forces. This breakthrough enables significant optical response shifts through minimal mechanical deformation, paving the way for advanced optical devices.

Area of Science:

  • Optics and Photonics
  • Nanotechnology
  • Mechanical Engineering

Background:

  • Optical forces are utilized for manipulating microscale and nanoscale objects.
  • Miniaturized optical systems are highly sensitive to optical forces.
  • Controlling the optical response of photonic structures via optical forces is challenging due to high force requirements.

Purpose of the Study:

  • To implement a resonant structure for efficient static control of optical response using optical forces.
  • To demonstrate static mechanical deformation in a silicon nitride structure.
  • To investigate the impact of optically induced displacement on resonance characteristics.

Main Methods:

  • Utilizing attractive and repulsive optical forces to control a resonant structure.

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  • Applying low continuous optical power (three milliwatts).
  • Measuring static mechanical deformation and resonance shifts.

    • Main Results:

    • Achieved static mechanical deformation up to 20 nanometres in a silicon nitride structure.
    • Demonstrated efficient static control of the optical response.
    • Observed resonance shifts 80 times the intrinsic resonance linewidth due to optically induced displacement.

    Conclusions:

    • Weak optical forces can efficiently control the optical response of resonant structures.
    • Optically induced static displacement offers a sensitive method for tuning photonic properties.
    • This technique has potential applications in advanced optical devices and systems.