Abstract
The d1 electronic configuration of Ti3+ in sapphire has the following advantages as a tunable solid state material: high gain, broad tuning range, and lack of excited state absorption. The lack of excited state absorption is inherent for the d1 configuration and promises low spectroscopic losses in other crystals doped with Ti3+. This makes Ti-doped systems very attractive as potential solid state laser media. The 300-nm range of Ti:sapphire limits its operation to the near-infrared range from 700 to 1000 nm. A desire to shift the range of the tunable solid state laser into the visible underlines our spectroscopic study of different Ti-dopant–crystalline host combinations. We conducted absorption, luminescence, and excitation measurements on different Ti-doped crystals including YAG, GSAG, YALO, and spinel. The results of our studies are compared with the spectroscopy of Ti:sapphire to identify d1 features in other hosts. The potential for developing a new titanium-based laser system is discussed.
© 1986 Optical Society of America
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