Compressive wave front sensing with weak values

Gregory A. Howland, Daniel J. Lum, John C. Howell

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

Abstract

We demonstrate a wavefront sensor that unites weak measurement and the compressive-sensing, single-pixel camera. Using a high-resolution spatial light modulator (SLM) as a variable waveplate, we weakly couple an optical field's transverse-position and polarization degrees of freedom. By placing random, binary patterns on the SLM, polarization serves as a meter for directly measuring random projections of the wavefront's real and imaginary components. Compressive-sensing optimization techniques can then recover the wave front. We acquire high quality, 256 × 256 pixel images of the wave front from only 10;000 projections. Photon-counting detectors give sub-picowatt sensitivity.

Original languageAmerican English
Pages (from-to)18870-18880
Number of pages11
JournalOptics Express
Volume22
Issue number16
DOIs
StatePublished - 11 Aug 2014
Externally publishedYes

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