Abstract

A directly diode-laser-pumped $\mathrm{Ti}:{\mathrm{Al}}_2{\mathrm{O}}_3$ laser is demonstrated. Using a $1\mathrm{W}$, $452\mathrm{nm}$ GaN diode laser, $19\mathrm{mW}$ of cw output power is achieved in a potentially portable format. Pumping at this short wavelength induces a loss at the laser wavelength that is not seen for the more typical green pump wavelengths. This effect is characterized and discussed.

© 2009 Optical Society of America

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