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Related Experiment Videos

Reflective acousto-optic modulation with surface acoustic waves.

Stanley S Hong1, Michael S Mermelstein, Dennis M Freeman

  • 1Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.

Applied Optics
|May 18, 2004
PubMed
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A novel reflective optical modulator uses surface acoustic waves to modulate light. This device demonstrates amplitude, frequency, and phase modulation across visible and deep UV wavelengths.

Area of Science:

  • Optics and Photonics
  • Materials Science

Background:

  • Acousto-optic modulators are crucial for controlling light properties.
  • Developing efficient reflective modulators is essential for integrated photonic systems.

Purpose of the Study:

  • To present a novel reflective optical modulator utilizing acousto-optic principles.
  • To demonstrate the modulation capabilities of the device at various wavelengths.

Main Methods:

  • Fabrication of a reflective modulator with a surface acoustic wave-corrugated mirror.
  • Testing modulation of optical amplitude, frequency, and phase.
  • Utilizing visible (633-nm, 488-nm) and deep UV (244-nm) laser sources.

Main Results:

  • Successful demonstration of amplitude, frequency, and phase modulation.

Related Experiment Videos

  • Achieved a maximum first-order diffraction efficiency of 6.0%.
  • The eight-channel reflective modulator operated effectively across tested wavelengths.

    • Conclusions:

    • The presented reflective optical modulator offers versatile light modulation capabilities.
    • The device shows promise for applications requiring efficient optical control at visible and deep UV wavelengths.