Flashlamp Pumped, Narrow Linewidth Ti: Sapphire Laser

A Ti: Sapphire laser pumped with six-flashlamps was developed. Small signal gain measurement was performed resulting in a peak gain-length product of 1.75. Optical energy available in the laser head was estimated to _??_800mJ, and the laser energy of 300 mJ was extracted using a normal stable resonator. When a grazing-incidence grating resonator with a relatively small incident angle of 82° was applied, we obtained the maximum laser energy of 120 mJ and the linewidth of _??_10pm, which was tunable within the mirror reflectivity bandwidth.