Abstract
Development of the titanium: sapphire laser(1) has mainly been confined to laser pumping, because of its short (3.2μsec) spontaneous emission lifetime. Esterowitz, et.al., (2) reported successful flashlamp pumping of Ti:Al2O3, with efficiency enhanced by using a dye surrounding the laser rod to convert near UV light from the flashlamp into blue-green fluorescence overlapping the titanium absorption band. The present work described successful attempts to substantially increase the flashlamp pumped efficiency, and to better characterize flashlamp pumped behavior. In preliminary results a slope efficiency of approximately 3×10−4 was obtained (2). Currently efficiencies approaching 1% are being realized.
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