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Related Experiment Video

Updated: Oct 31, 2025

Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station
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Miniature planar telescopes for efficient, wide-angle, high-precision beam steering.

Ziqian He1, Kun Yin1, Shin-Tson Wu2

  • 1College of Optics and Photonics, University of Central Florida, Orlando, FL, 32816, USA.

Light, Science & Applications
|June 29, 2021
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Summary

This study introduces a miniature planar telescope using liquid crystal polymers for enhanced beam steering. This novel optical device offers high efficiency and precision for applications like LiDAR and 3D printing.

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Area of Science:

  • Optics and Photonics
  • Materials Science
  • Liquid Crystal Technology

Background:

  • Non-mechanical beam steerers are crucial for advanced optical systems like LiDAR and 3D printing.
  • Current optical phased arrays have limited steering angles and precision.
  • Conventional compact telescopes are challenging to fabricate with high quality and low cost.

Purpose of the Study:

  • To develop a miniature planar telescope for angle magnification independent of incident spatial location.
  • To leverage liquid crystal polymers for creating compact, high-efficiency optical elements.
  • To enable enhanced beam steering capabilities for various optical applications.

Main Methods:

  • Fabrication of patterned liquid crystal-based planar optical elements using a novel exposure method.
  • Cascading two liquid crystal planar optical elements, each performing a specific mathematical transformation.
  • Assembly of fabricated elements into planar telescopes with adjustable magnification factors.

Main Results:

  • Achieved over 84.6% optical efficiency within the incident field range.
  • Demonstrated minimal wavefront distortion in the fabricated planar telescopes.
  • Successfully assembled planar telescopes with different magnification factors.

Conclusions:

  • The proposed miniature planar telescope, utilizing cascaded liquid crystal planar optical elements, offers significant angle magnification.
  • This technology enables functionalities beyond single optical elements, paving the way for lightweight, low-loss optical transmitters.
  • The device holds potential for widespread applications in autonomous vehicles, displays, microscopy, and 3D printing.