Interferometric spatial mode analyzer with a bucket detector

A spatial mode analyzer based on a Michelson interferometer with a bucket detector is experimentally implemented. The delay line in the interferometer is an optical implementation of the fractional Fourier transform (fFT) which enables the spatial mode analysis of a given input field in the Hermite-...

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Published inOptics express Vol. 26; no. 7; pp. 8719 - 8728
Main Authors Malhotra, Tanya, Farriss, Wesley E, Hassett, Jeremy, Abouraddy, Ayman F, Fienup, James R, Vamivakas, A Nick
Format Journal Article
LanguageEnglish
Published United States 02.04.2018
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Summary:A spatial mode analyzer based on a Michelson interferometer with a bucket detector is experimentally implemented. The delay line in the interferometer is an optical implementation of the fractional Fourier transform (fFT) which enables the spatial mode analysis of a given input field in the Hermite-Gaussian (HG) mode basis. Modal weights for both 1D and 2D input fields are experimentally measured. Results for input fields comprising of multiple HG modes are also presented.
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ISSN:1094-4087
1094-4087
DOI:10.1364/OE.26.008719