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The control of electromagnetic radiation in transformation optical metamaterials brings the development of vast variety of optical devices. Of a particular importance is the possibility to control the propagation of light with light. In this work, we use a structured planar cavity to enhance the thermo-optic effect in a transformation optical waveguide. In the process, a control laser produces apparent inhomogeneous refractive index change inside the waveguides. The trajectory of a second probe laser beam is then continuously tuned in the experiment. The experimental results agree well with the developed theory. The reported method can provide a new approach toward development of transformation optical devices where active all-optical control of the impinging light can be achieved.
Hui Liu
"Active control of light beam in transformation optics (Presentation Recording)", Proc. SPIE 9544, Metamaterials, Metadevices, and Metasystems 2015, 95440E (5 October 2015); https://doi.org/10.1117/12.2186132
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Hui Liu, "Active control of light beam in transformation optics (Presentation Recording)," Proc. SPIE 9544, Metamaterials, Metadevices, and Metasystems 2015, 95440E (5 October 2015); https://doi.org/10.1117/12.2186132