Ellen J. Yoffa, David Adler
Physical Review B
Persistent spectral holes were observed in the R-lines of SrTiO3+ at 2 K. The hole burning mechanism was shown to be due to a two-photon or gated process, where a second optical excitation causes bleaching by photoionization of Cr3+. The trapping center responsible for the hole burning is postulated to be an oxygen vacancy in the lattice associated with a Cr3+ ion. A series of samples reduced at different temperatures was studied, and the hole burning efficiency was seen to be strongly dependent on reduction temperature. © 1994.
Ellen J. Yoffa, David Adler
Physical Review B
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SPIE Advanced Lithography 2007
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SPIE Optical Engineering + Applications 2009
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IEEE J-STARS