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In this work we implement theoretical proposal of Smolyaninov and Narimanov (Phys. Rev. Lett. 105, 067402 (2010)) who demonstrated that extraordinary light waves in hyperbolic metamaterials may exhibit “two times” physics behavior. This behavior is observed via experimental study of nonlinear optics of iron/cobalt ferrofluid-based hyperbolic metamaterials, which shows considerable similarities with gravitation theory. We will present high-resolution images of self-focusing effect in this metamaterial, which were obtained as a function of light intensity and varying incidence angle with respect to the optical axis of the metamaterial.
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Vera N. Smolyaninova, Jonathon Cartelli, Nathaniel Christopher, Jonathan Perry, Stephanie Spickard, Mary S. Devadas, Igor I. Smolyaninov, "Nonlinear optics in ferrofluid-based hyperbolic metamaterials," Proc. SPIE PC12195, Metamaterials, Metadevices, and Metasystems 2022, PC121951V (3 October 2022); https://doi.org/10.1117/12.2632645