Compressive sensing spectrometry based on liquid crystal devices

Yitzhak August, Adrian Stern

Research output: Contribution to journalArticlepeer-review

83 Scopus citations


We present a new type of compressive spectroscopy technique employing a liquid crystal (LC) phase retarder. A tunable LCcellisusedinamanner compliant with the compressive sensing (CS) frameworktosignificantly reduce the spectral scanning effort. The presented optical spectrometer consists of a single LC phase retarder combined with a single photo detector, where the LC phase retarder is used to modulate the input spectrum and the photodiode is used to measure the transmitted spectral signal. Sequences of measurements are taken, where each measurement is done with a different state of the retarder. Then, the set of photodiode measurements is used as input data to a CS solver algorithm. Wedemonstrate numerally compressive spectral sensing with approximately ten times fewer measurements than with an equivalent conventional spectrometer.

Original languageEnglish
Pages (from-to)4996-4999
Number of pages4
JournalOptics Letters
Issue number23
StatePublished - 1 Dec 2013

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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