Simultaneous measurement of phase and spatially variant elliptical polarization of light fields

Third party funded individual grant

Project Details

Project leader:
Prof. Dr. Norbert Lindlein

Project members:
Dr. Sergej Rothau
Dr. Klaus Peter Mantel
Christine Kellermann
Vanusch Nercissian
Andreas Berger
Ismail Barakat

Contributing FAU Organisations:
Institut für Optik, Information und Photonik
Lehrstuhl für Angewandte Physik
Lehrstuhl für Experimentalphysik (Optik)

Funding source: DFG-Einzelförderung / Sachbeihilfe (EIN-SBH)
Acronym: PPSI
Start date: 01/10/2015
End date: 01/10/2018

Research Fields

Optical metrology
Lehrstuhl für Experimentalphysik (Optik)

Abstract (technical / expert description):

Polarization elements which are based on subwavelength structures increasingly find applications in optics. An example is the generation of radially polarized light which may be used in microscopy to create particularly small rotationally symmetric foci. Aside from the polarization, however, such elements in general affect the phase of the incident light field. Therefore, the simultaneous measurement of the polarization state and the phase of the light field is an important task. Up to now, phase and polarization can only be separately determined, via Stokes measurements for the polarization and interferometric measurements for the phase. When a light field with a spatially varying polarization is used in an interferometer to determine the phase, however, regions in the interferogram with vanishing contrast exist where the polarizations of object and reference beam are orthogonal. The measurement can only be performed in the regions with good contrast, and the orientation of these regions to each other is not clear. For generally polarized light, a determination of the phase for the whole area is therefore not possible with standard methods. To overcome these problems, a novel measurement method is proposed which enables the simultaneous determination of the phase and a general, i. e. spatially variant elliptical polarization state of light within one single measurement process. The solution consists in extending the well known procedure of phase shifting interferometry by an additional variation of the reference polarization. By means of such a polarization and phase shifting interferometry the additional information about the object wave can be gained.

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Rothau, S., Rao, X., & Lindlein, N. (2019). Simultaneous measurement of phase transmission and linear or circular dichroism of an object under test. Applied Optics, 58(7), 1739-1746.
Rothau, S., & Lindlein, N. (2018). Polarisations- und phasenschiebende Interferometrie für die simultane Vermessung der Phasenfront und der Absorption / des Dichroismus eines Objekts. In Proceedings of the 119. Jahrestagung der DGaO (pp. P9). Aalen, DE.
Rothau, S., Mantel, K., & Lindlein, N. (2018). Simultaneous measurement of phase transmission and birefringence of an object under test. Applied Optics, 57(17), 4849--4856.
Rothau, S., Mantel, K., & Lindlein, N. (2017). Polarization and phase shifting interferometry. In Proc. SPIE 10329 (pp. 1032903-1032903-7).
Rothau, S., Kellermann, C., Mayer, S., Mantel, K.P., & Lindlein, N. (2017). Polarization and phase-shifting interferometry for arbitrary, locally varying polarization states. Applied Optics, 56(5), 1422-1430.
Rothau, S., & Lindlein, N. (2016). Polarization and phase shifting interferometry for the simultaneous measurement of phase and polarization.
Rothau, S., Kellermann, C., & Lindlein, N. (2015). Experimental results of the simultaneous measurement of spatially varying phase and polarization. 116. Jahrestagung der DGaO.
Kellermann, C., Rothau, S., & Lindlein, N. (2015). Theoretical description of a method for simultaneous measurement of phase and arbitrary polarization. Poster presentation at 116. Jahrestagung der DGaO, Brno CZ.
Rothau, S., Kellermann, C., Nercissian, V., Berger, A., Mantel, K., Lindlein, N., & Lindlein, N. (2014). Simultaneous measurement of phase and local orientation of linearly polarized light: Implementation and measurement results. Applied Optics, 14, 3125-3130.
Rothau, S., Nercissian, V., Berger, A., Harder, I., Mantel, K.P., & Lindlein, N. (2013). Phase and polarization measurement of a spatially varying linear polarization distribution. In Proceedings of the 7th International Workshop on Advanced Optical Imaging and Metrology, Fringe 2013 (pp. 309-312). Nurtingen, DE: springer berlin.

Last updated on 2019-12-02 at 11:32