Analog and Digital Deformable Diffractive Optics Actuated by Inter-Nanomagnet Forces
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Deterre-2010-Analog and Digital D.pdf
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6.37 MB
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Author(s)
Deterre, Martin
Nichol, Anthony John
Oh, Se Baek
Barbastathis, George
Date Issued
July 2010
Journal
IEEE Journal of Quantum Electronics
Publisher
Institute of Electrical and Electronics Engineers
Citation
Deterre, Martin et al. “Analog and Digital Deformable Diffractive Optics Actuated by Inter-Nanomagnet Forces.” IEEE Journal of Quantum Electronics 46.9 (2010) : 1275-1287. © Copyright 2010 IEEE
Version
Final published version
Abstract
In this paper, we present a novel actuation technique of diffractive optics based on magnetic interaction forces, permitting a fine resolution tuning as well as a tuning in discrete steps. This actuation combines advantages of “analog” and “digital” tuning in conventional diffractive optics. The application of a magnetic field perpendicularly to the beams of a freestanding grating coated with magnetic material generates intermagnet forces causing these beams to deform slightly or to clump together. A theoretical analysis of the forces has been carried out, followed by actuation simulations in both linear and nonlinear regimes for different types of gratings, showing examples of exponential and parabolic chirp profiles in addition to beam clumping. In experiment, the diffraction patterns of distinct fabricated gratings have shown both a continuous shift and smear as well as a discrete change in the diffracted angles proving the concept of analog and digital tuning.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1109/jqe.2010.2046721
