Open AccessInterferometric spatial mode analyzer with a bucket detector
Author(s) -
Tanya Malhotra,
Wesley E. Farriss,
J. Hassett,
Ayman F. Abouraddy,
James R. Fienup,
A. Nick Vamivakas
Publication year - 2018
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.26.008719
Subject(s) - optics , interferometry , michelson interferometer , physics , detector , fast fourier transform , spatial frequency , spectrum analyzer , beam splitter , interference (communication) , fourier transform , spatial filter , computer science , algorithm , laser , telecommunications , channel (broadcasting) , quantum mechanics
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.