抄録
Passive Q-switching operation of a flashlamp-pumped Ti: sapphire laser utilizing an intracavity telescope filled with a liquid Brillouin medium, C2Cl3F3, is described. A narrow linewidth seed pulse is generated with an auxiliary resonator consisting of a grazing incidence grating to reduce the stimulated Brillouin scattering threshold. The magnificationof a telescope and an auxiliary resonator length were designed so that a large TEM00 mode volume is obtained in the gain medium. When the Q-switch timing was optimized by inserting a loss in the auxiliary resonator, an output energy of nearly 40 mJ in a-20-ns pulse was obtained.
