Journal
OPTICS EXPRESS
Volume 23, Issue 9, Pages 11898-11911Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.23.011898
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Funding
- Marie Curie Intra-European Fellowship
- CSI:PSL grant
- LABEX WIFI (Laboratory of Excellence within the French Program Investments for the Future) [ANR-10-LABX-24, ANR-10-IDEX-0001-02 PSL*]
- ERC under the European Union's 7th Framework Programme [307087-SPARCS, 278025-COMEDIA]
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This paper investigates experimental means of measuring the transmission matrix (TM) of a highly scattering medium, with the simplest optical setup. Spatial light modulation is performed by a digital micromirror device (DMD), allowing high rates and high pixel counts but only binary amplitude modulation. On the sensor side, without a reference beam, the CCD camera provides only intensity measurements. Within this framework, this paper shows that the TM can still be retrieved, through signal processing techniques of phase retrieval. This is experimentally validated on three criteria : quality of prediction, distribution of singular values, and quality of focusing. (C) 2015 Optical Society of America
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