29 April 2016 Agile wavefront splitting interferometry and imaging using a digital micromirror device
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Since 1997, we have proposed and demonstrated the use of the Texas Instrument (TI) Digital Micromirror Device (DMD) for various non-display applications including optical switching and imaging. In 2009, we proposed the use of the DMD to realize wavefront splitting interferometers as well as a variety of imagers. Specifically, proposed were agile electronically programmable wavefront splitting interferometer designs using a Spatial Light Modulator (SLM) such as (a) a transmissive SLM, (b) a DMD SLM and (c) a Beamsplitter with a DMD SLM. The SLMs operates with on/off or digital state pixels, much like a black and white state optical window to control passage/reflection of incident light. SLM pixel locations can be spatially and temporally modulated to create custom wavefronts for near-common path optical interference at the optical detectors such as a CCD/CMOS sensor, a Focal Plane Array (FPA) sensor or a point-photodetector. This paper describes the proposed DMD-based wavefront splitting interferometer and imager designs and their relevant experimental results.
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Juan Pablo La Torre, Juan Pablo La Torre, M. Junaid Amin, M. Junaid Amin, Nabeel A. Riza, Nabeel A. Riza, "Agile wavefront splitting interferometry and imaging using a digital micromirror device", Proc. SPIE 9896, Optics, Photonics and Digital Technologies for Imaging Applications IV, 98960B (29 April 2016); doi: 10.1117/12.2228373; https://doi.org/10.1117/12.2228373

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