Measurement of the orbital angular momentum spectrum of partially coherent beams
Optics Letters, Vol. 35, Issue 6, pp. 889-891 (2010)
http://dx.doi.org/10.1364/OL.35.000889
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Abstract
In this work we implement a Mach–Zehnder interferometer with an image rotator in one of its arms to measure the orbital angular momentum (OAM) spectrum of a partially coherent beam. By measuring the visibility of the interference as a function of the angle of rotation, the OAM distribution can be recovered via a Fourier transform. Theoretical calculations based on the coherent mode decomposition of the cross-spectral density are in excellent agreement with the experimental data.
© 2010 Optical Society of America
OCIS Codes
(030.1640) Coherence and statistical optics : Coherence
(030.4070) Coherence and statistical optics : Modes
(110.4980) Imaging systems : Partial coherence in imaging
(120.3180) Instrumentation, measurement, and metrology : Interferometry
ToC Category:
Coherence and Statistical Optics
History
Original Manuscript: November 23, 2009
Revised Manuscript: February 12, 2010
Manuscript Accepted: February 16, 2010
Published: March 15, 2010
Citation
H. Di Lorenzo Pires, J. Woudenberg, and M. P. van Exter, "Measurement of the orbital angular momentum spectrum of partially coherent beams," Opt. Lett. 35, 889-891 (2010)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-35-6-889
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