Observation of erasable holographic gratings at room temperature in Eu³⁺-doped glasses

Abstract

The characteristics of four-wave mixing signals were studied in Eu³⁺-doped glasses. When the Eu³⁺ ions were resonantly excited, two types of laser-induced grating were formed: a transient population grating associated with the excited Eu³⁺ ions and a holographic grating, which was permanent at room temperature but could be erased either thermally or optically.

© 1986 Optical Society of America

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