| Issue |
EPJ Web Conf.
Volume 266, 2022
EOS Annual Meeting (EOSAM 2022)
|
|
|---|---|---|
| Article Number | 10002 | |
| Number of page(s) | 2 | |
| Section | Topical Meeting (TOM) 10- Frontiers in Optical Metrology | |
| DOI | https://doi.org/10.1051/epjconf/202226610002 | |
| Published online | 13 October 2022 | |
https://doi.org/10.1051/epjconf/202226610002
Retardance measurement by spatially probing the sample with optical vortices
Department of Optics, Faculty of Science, Palacký University Olomouc, 771 46 Olomouc, Czech Republic
* Corresponding author: fordey@optics.upol.cz
Published online: 13 October 2022
Modern optical systems utilize various degrees of freedom, such as polarization, for shaping and controlling the light. Common representative of such a component is spatial light modulator (SLM), consisting of liquid crystal display, allowing for imposing predetermined retardation with given orientation of optical axis of anisotropy. Therefore, it is widely used for polarization coded phase shifting, polarization splitting of wavefront in digital holography etc. Narrowing tolerance in optical experiments puts higher demands on precise setting of the modulator and the parameters set. Consequently, measuring such devices and their parameters is essential for proper functionality. We present a single shot, common path method for measuring retardance map of the modulator, based on spatial probing the modulator with point images of spatially coherent light source and transforming them to optical vortices.
© The Authors, published by EDP Sciences
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