Friday, May 2025

01:30 PM - 01:50 PM

Room: 220C

Session: AR/VR Fabrication and Testing

Perturbation-Damped Optical Interferometer for AR Waveguide Grating Fabrication

Late-News

• John Semmen

  University of Central Florida

Description:

A perturbation-resistant interferometer is designed and demonstrated for stable fabrication of sub-micron pitch AR waveguide gratings. Polarization multiplexing allows every component in the interferometer to be shared by two beams which interfere at a high angle. Polarization volume hologram gratings featuring a grating pitch less than 300 nm are fabricated with this approach. The perturbation-resistant short-pitch grating fabrication method offers a reliable and scalable approach to mass-producing holographic gratings with a sub-micron grating pitch.