Abstract
AbstractBased on two‐colour spectroscopy, we identify origin of infrared emissions in Cr doped ZnSe. Near infrared emission at about 0.98 μm is related to Cr2+ intra‐shell process. Optical memory effect is observed related to metastability of light induced Cr1+ population. This effect can be used for optical detection of THz radiation. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
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