Abstract
High-pressure CO2 lasers operated at or above ten-atmosphere pressure have the potential to generate high-power ultrashort laser pulses on four bands between 9 and 11 pm. Unfortunately, conventional modelocking techniques do not allow to generate pulses whose duration is limited by the gain bandwidth of the high-pressure C02 lasers since the lifetime of the gain is too short. The state-of-the-art method developed by Corkum1'2 consists of generating a short C02 laser pulse by semiconductor switching and of injection seeding a high- pressure C02 laser with that pulse; such a method has allowed to generate subpicosecond mid-infrared pulses with powers exceeding 1011 W.
© 1994 Optical Society of America
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