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Design and fabrication of blazed gratings for a waveguide-type head mounted display

(2020) OPTICS EXPRESS. 28(8). p.11175-11190
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Abstract
In a waveguide-type display for augmented reality, the image is injected in the waveguide and extracted in front of the eye appearing superimposed on the real-world scene. An elegant and compact way of coupling these images in and out is by using blazed gratings, which can achieve high diffraction efficiencies. We report the design of blazed gratings for green light (lambda = 543 nm) and a diffraction angle of 43 degrees. The blazed gratings with a pitch of 508 nm and a fill factor of 0.66 are fabricated using grayscale electron beam lithography. We outline the subsequent replication in a polymer waveguide material with ultraviolet nanoimprint lithography and confirm a throughput efficiency of 17.4%. We finally show the in- and outcoupling of an image through two blazed gratings appearing sharp and non-distorted in the environment. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
Keywords
Atomic and Molecular Physics, and Optics, NANOIMPRINT LITHOGRAPHY, BEAM, COUPLERS, RESIST

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MLA
Mattelin, Marie-Aline, et al. “Design and Fabrication of Blazed Gratings for a Waveguide-Type Head Mounted Display.” OPTICS EXPRESS, vol. 28, no. 8, 2020, pp. 11175–90, doi:10.1364/oe.384806.
APA
Mattelin, M.-A., Radosavljevic, A., Missinne, J., Cuypers, D., & Van Steenberge, G. (2020). Design and fabrication of blazed gratings for a waveguide-type head mounted display. OPTICS EXPRESS, 28(8), 11175–11190. https://doi.org/10.1364/oe.384806
Chicago author-date
Mattelin, Marie-Aline, Ana Radosavljevic, Jeroen Missinne, Dieter Cuypers, and Geert Van Steenberge. 2020. “Design and Fabrication of Blazed Gratings for a Waveguide-Type Head Mounted Display.” OPTICS EXPRESS 28 (8): 11175–90. https://doi.org/10.1364/oe.384806.
Chicago author-date (all authors)
Mattelin, Marie-Aline, Ana Radosavljevic, Jeroen Missinne, Dieter Cuypers, and Geert Van Steenberge. 2020. “Design and Fabrication of Blazed Gratings for a Waveguide-Type Head Mounted Display.” OPTICS EXPRESS 28 (8): 11175–11190. doi:10.1364/oe.384806.
Vancouver
1.
Mattelin M-A, Radosavljevic A, Missinne J, Cuypers D, Van Steenberge G. Design and fabrication of blazed gratings for a waveguide-type head mounted display. OPTICS EXPRESS. 2020;28(8):11175–90.
IEEE
[1]
M.-A. Mattelin, A. Radosavljevic, J. Missinne, D. Cuypers, and G. Van Steenberge, “Design and fabrication of blazed gratings for a waveguide-type head mounted display,” OPTICS EXPRESS, vol. 28, no. 8, pp. 11175–11190, 2020.
@article{8655991,
  abstract     = {In a waveguide-type display for augmented reality, the image is injected in the waveguide and extracted in front of the eye appearing superimposed on the real-world scene. An elegant and compact way of coupling these images in and out is by using blazed gratings, which can achieve high diffraction efficiencies. We report the design of blazed gratings for green light (lambda = 543 nm) and a diffraction angle of 43 degrees. The blazed gratings with a pitch of 508 nm and a fill factor of 0.66 are fabricated using grayscale electron beam lithography. We outline the subsequent replication in a polymer waveguide material with ultraviolet nanoimprint lithography and confirm a throughput efficiency of 17.4%. We finally show the in- and outcoupling of an image through two blazed gratings appearing sharp and non-distorted in the environment. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement},
  author       = {Mattelin, Marie-Aline and Radosavljevic, Ana and Missinne, Jeroen and Cuypers, Dieter and Van Steenberge, Geert},
  issn         = {1094-4087},
  journal      = {OPTICS EXPRESS},
  keywords     = {Atomic and Molecular Physics,and Optics,NANOIMPRINT LITHOGRAPHY,BEAM,COUPLERS,RESIST},
  language     = {eng},
  number       = {8},
  pages        = {11175--11190},
  title        = {Design and fabrication of blazed gratings for a waveguide-type head mounted display},
  url          = {http://dx.doi.org/10.1364/oe.384806},
  volume       = {28},
  year         = {2020},
}

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