Abstract
Persistent spectral hole burning has been observed at 77 K, 180 K, and room temperature for in sodium aluminosilicate glass melted under a reducing atmosphere. In particular, room-temperature persistent spectral hole burning is reported for the first time to our knowledge in -doped materials. The persistent hole is accompanied by no antiholes and lasts for 1 h at least. The thermal stability of the hole is greater than that of a persistent hole burned for in sodium aluminosilicate glass melted in air.
© 1998 Optical Society of America
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