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Related Experiment Videos

Practical layer designs for polarizing beam-splitter cubes.

Bernhard von Blanckenhagen1

  • 1Carl Zeiss AG, Coating Technology, Corporate Research and Technology, 73446 Oberkochen, Germany. blanckenhagen@zeiss.de

Applied Optics
|March 17, 2006
PubMed
Summary

High-performance polarizing beam splitters for Liquid-crystal-on-silicon (LCoS) systems were optimized using computer design and plasma-ion-assisted deposition. Practical designs achieved performance comparable to theoretical models for visible light projection.

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Area of Science:

  • Optics and Photonics
  • Materials Science

Background:

  • Liquid-crystal-on-silicon (LCoS) digital projection systems demand advanced polarizing beam splitters.
  • Traditional beam-splitter cubes with interference coatings are essential for meeting these performance needs.

Purpose of the Study:

  • To design and fabricate high-performance polarizing beam splitters for LCoS displays.
  • To optimize multilayer structures for broadband visible light applications.

Main Methods:

  • Computer optimization of MacNeille polarizer layer designs.
  • Plasma-ion-assisted deposition for fabricating multilayer structures.
  • Comparison of practical beam-splitter cube performance against theoretical models.

Main Results:

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  • Designed multilayer structures with 100 nm bandwidth for blue, green, and red spectral regions.
  • Developed a design covering the entire visible spectrum.
  • Fabricated beam-splitter cubes demonstrating performance close to theoretical predictions.

    • Conclusions:

    • Computer optimization and plasma-ion-assisted deposition are effective for creating high-performance LCoS beam splitters.
    • The developed beam splitters meet the stringent requirements for digital projection systems.
    • Achieved broadband performance across the visible spectrum is feasible.