Journal article
Tina M. Hayward, S. Qadri, N. Brimhall, F. Santiago, M. Christophersen, Christopher Dunay, R. Espinola, H. Martín, C. C. T. Cheung, R. Menon
Optics Express, 2023
Optics Express, 2023
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APA
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Hayward, T. M., Qadri, S., Brimhall, N., Santiago, F., Christophersen, M., Dunay, C., … Menon, R. (2023). Multilevel diffractive lens in the MWIR with extended depth-of-focus and wide field-of-view. Optics Express.
Chicago/Turabian
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Hayward, Tina M., S. Qadri, N. Brimhall, F. Santiago, M. Christophersen, Christopher Dunay, R. Espinola, H. Martín, C. C. T. Cheung, and R. Menon. “Multilevel Diffractive Lens in the MWIR with Extended Depth-of-Focus and Wide Field-of-View.” Optics Express (2023).
MLA
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Hayward, Tina M., et al. “Multilevel Diffractive Lens in the MWIR with Extended Depth-of-Focus and Wide Field-of-View.” Optics Express, 2023.
BibTeX Click to copy
@article{tina2023a,
title = {Multilevel diffractive lens in the MWIR with extended depth-of-focus and wide field-of-view.},
year = {2023},
journal = {Optics Express},
author = {Hayward, Tina M. and Qadri, S. and Brimhall, N. and Santiago, F. and Christophersen, M. and Dunay, Christopher and Espinola, R. and Martín, H. and Cheung, C. C. T. and Menon, R.}
}
Abstract
Optics in the mid-wave-infra-red (MWIR) band are generally heavy, thick and expensive. Here, we demonstrate multi-level diffractive lenses; one designed using inverse design and another using the conventional propagation phase (the Fresnel zone plate or FZP) with diameter = 25 mm and focal length = 25 mm operating at λ=4μm. We fabricated the lenses by optical lithography and compared their performance. We show that the inverse-designed MDL achieves larger depth-of-focus and better off-axis performance when compared to the FZP at the expense of larger spot size and reduced focusing efficiency. Both lenses are flat with thickness ≤0.5 mm and weigh ≤3.63 g, which are far smaller than their conventional refractive counterparts.