Measuring the modulus of the spatial coherence function using an error tolerant phase shifting algorithm and a continuous lateral shearing interferometer

Journal article
(Original article)


Publication Details

Author(s): Harder I, Eisner M, Voelkel R, Rothau S, Schwider J, Schwider PM
Journal: Optics Express
Publisher: OSA - The Optical Society
Publication year: 2016
Volume: 24
Journal issue: 5
Pages range: 5087-5101
ISSN: 1094-4087


Abstract


The modulus of the degree of coherence can be derived from interference patterns either by using fringes and next neighbour operations or by using several interferograms produced through phase shifting. Here the latter approach will be followed by using a lateral shearing interferometer exploiting a diffractive grating wedge providing a linearly progressive shear. Phase shifting methods offer pixel-oriented evaluations but suffer from instabilities and drifts which is the reason for the derivation of an error immune algorithm. This algorithm will use five π/2-steps of the reference phase also for the calculation of the modulus of the coherence function.



FAU Authors / FAU Editors

Harder, Irina Dr.
Institut für Optik, Information und Photonik
Rothau, Sergej Dr.
Institut für Optik, Information und Photonik
Schwider, Johannes Prof. Dr.
Naturwissenschaftliche Fakultät


Additional Organisation
Lehrstuhl für Experimentalphysik (Optik)


How to cite

APA:
Harder, I., Eisner, M., Voelkel, R., Rothau, S., Schwider, J., & Schwider, P.M. (2016). Measuring the modulus of the spatial coherence function using an error tolerant phase shifting algorithm and a continuous lateral shearing interferometer. Optics Express, 24(5), 5087-5101. https://dx.doi.org/10.1364/OE.24.005087

MLA:
Harder, Irina, et al. "Measuring the modulus of the spatial coherence function using an error tolerant phase shifting algorithm and a continuous lateral shearing interferometer." Optics Express 24.5 (2016): 5087-5101.

BibTeX: 

Last updated on 2018-11-11 at 13:50