Wide field-of-view waveguide displays enabled by polarization-dependent metagratings

Zhujun Shi; Wei Ting Chen; Federico Capasso

doi:10.1117/12.2315635

21 May 2018 Wide field-of-view waveguide displays enabled by polarization-dependent metagratings

Zhujun Shi, Wei Ting Chen, Federico Capasso

Proceedings Volume 10676, Digital Optics for Immersive Displays; 1067615 (2018) https://doi.org/10.1117/12.2315635
Event: SPIE Photonics Europe, 2018, Strasbourg, France

Abstract

We proposed a waveguide display design based on polarization dependent metagratings. By encoding the left and right half of field of view (FOV) in two orthogonal polarization channels, we achieved an overall horizontal FOV of 67° at 460 nm using a single waveguide, which is 70% larger than that achieved with conventional diffractive gratings. Metagratings that selectively diffract out TE or TM polarized light are designed and simulated using rigorous coupled wave analysis (RCWA). High polarization selectivity is achieved, with minimal crosstalk between the two channels. The transmission spectrum at normal incidence is calculated to assess the see-through effect. Remaining challenges such as fabrication and efficiency issues are discussed. The concept of multiplexing information in the polarization domain enables wide FOV waveguide displays for future AR devices.

Citation Download Citation

Zhujun Shi, Wei Ting Chen, and Federico Capasso "Wide field-of-view waveguide displays enabled by polarization-dependent metagratings", Proc. SPIE 10676, Digital Optics for Immersive Displays, 1067615 (21 May 2018); https://doi.org/10.1117/12.2315635

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