Abstract
Spectral hole burning in the 4A2–2E(2A) zero-phonon line for Cr3+ in Be3Al2(SiO3)6 is reported. Persistent holes with a linewidth of 0.5 GHz were observed when the crystal temperature was below 4 K. The burning is attributed to photoionization of Cr3+ from the 2E state and trapping of the released charge at other sites. The changes in the Coulomb field are the main factors contributing to the hole linewidth. High-resolution axial and transverse Zeeman measurements of the 4A2–2E(2A) transition performed by using the spectral hole are found to be consistent with the known g values.
© 1992 Optical Society of America
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