Agile wavefront splitting interferometry and imaging using a digital micromirror device

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La Torre, Juan Pablo
Amin, M. Junaid
Riza, Nabeel A.
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Society of Photo-optical Instrumentation Engineers (SPIE)
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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.
Optical beam profiler , Architectures , Attenuator , Imager , Filter
La Torre, J. P., Amin, M. J., Riza, N. A. (2016) ‘Agile wavefront splitting interferometry and imaging using a digital micromirror device,’ Proceedings of SPIE, 9896, Optics, Photonics and Digital Technologies for Imaging Applications IV, 29 April, SPIE Photonics Europe, Brussels, Belgium, 98960B, (12 pp). doi: 10.1117/12.2228373
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