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Publication
ASSL 1986
Conference paper
SPECTRAL HOLE BURNING IN TITANIUM DOPED SAPPHIRE AND YAG
Abstract
Titanium doped sapphire and YAG have been proposed as materials for tunable solid state lasers, using the d→d, nominally 2E → 2T2, vibronic band of Ti3+ around 800 nm. (1,2) At liquid-helium temperatures relatively sharp zero-phonon lines (ZPL) associated with the 2E → 2T2 transitions are observed at 616 nm (Al2O3) and 650 nm (YAG). We have investigated the photo-stability of the Ti3+ ions in these two hosts under resonant pumping of the zero-phonon line. Frequency-selective excitation in the inhomogeneously broadened ZPL permits sensitive detection of the photo-induced reduction of Ti3+ ions. © 1986 Optical Society of America