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Programmable high-speed polarization multiplexed optical scanner.

Nabeel A Riza1, Sajjad A Khan

  • 1School of Optics/Center for Research and Education in Optics and Lasers, University of Central Florida, 4000 Central Florida Boulevard, Orlando, Florida 32816-2700, USA. nriza@mail.ucf.edu

Optics Letters
|April 17, 2003
PubMed
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This study presents a fast optical scanner using liquid crystals for 3D beam control. It offers precise, programmable scanning with low power and rapid access times for various applications.

Area of Science:

  • Optics and Photonics
  • Materials Science

Background:

  • Traditional optical scanners often face limitations in speed, precision, and programmability.
  • Developing advanced beam-forming technologies is crucial for applications requiring dynamic light manipulation.

Purpose of the Study:

  • To introduce a novel digital-analog controlled, polarization-based optical scanner.
  • To demonstrate complete three-dimensional (3D) beam-forming programmability with high precision and speed.

Main Methods:

  • Utilized large-aperture liquid-crystal (LC) based optics for beam steering.
  • Implemented digital repeatability and time-multiplexed analog beam forming.
  • Employed analog frequency and amplitude control of nematic LC beam-former cells.

Main Results:

Related Experiment Videos

  • Achieved continuous fine-scan programmability over 0.66 mrad horizontal and 0.75 mrad vertical deflection.
  • Demonstrated longitudinal scanning capability from infinity to 1.84 m focal length.
  • Successfully performed an 8-point volumetric scan and a 2-bit digital lens scan at 1310 nm with a 35-microsecond random-access time.

Conclusions:

  • The developed optical scanner offers a versatile platform for 3D beam control.
  • Its features of low power consumption, digital repeatability, and fast analog beam forming are significant advancements.
  • The demonstrated scanning capabilities open possibilities for advanced optical systems and imaging.