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

Harder I, Eisner M, Voelkel R, Rothau S, Schwider J, Schwider PM (2016)


Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2016

Journal

Publisher: OSA - The Optical Society

Book Volume: 24

Pages Range: 5087-5101

Journal Issue: 5

DOI: 10.1364/OE.24.005087

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.

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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.

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