Ptychographic analysis of the photorefractive effect in LiNbO3:Fe
Ptychographic analysis of the photorefractive effect in LiNbO3:Fe
Bernert, C.; Hoppe, R.; Wittwer, F.; Woike, T.; Schroer, C. G.
We present light induced refractive index changes in iron doped lithium niobate detected with a novel microscopy technique called ptychography. This method determines the change of the refractive index together with the intensity distribution of the writing beam from one single measurement with \SI{3}{\micro \m} spatial resolution and a sensitivity of the refractive index change of $10^{-5}$. We show that the light induced refractive index change follows exactly the intensity distribution of the writing beam.
Keywords: ptychographie; LiNbO3; LiNbO3:Fe; photorefractive effect
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Optics Express 25(2017), 31640-31650
DOI: 10.1364/OE.25.031640
Cited 9 times in Scopus
Permalink: https://www.hzdr.de/publications/Publ-25798