Observation of Erasable Holographic Gratings at Room Temperature in Eu(3+)-Doped Glasses

摘要

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. (Reprints)