Giant refraction for broadband visible light in composite ferroelectrics.

Del Re E., Di Mei F., Falsi L., Parravicini J., Parravicini G., Tartara L., Agranat A.J.

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II - Fisica della materia
GSSI Ex ISEF - Aula C - Giovedì 26 h 09:00 - 12:30
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Optical propagation in room-temperature samples of nanodisordered potassium-lithium-tantalate-niobate cooled below the Curie temperature leads to a wide variety of interesting and unexpected phenomena. We will discuss the observation of broadband giant optical refraction, with measured index of refraction larger than 25 across the entire visible spectrum, along with achromatic optical propagation, binary birefringence, and huge second-order nonlinearity.

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