Abstract
Since Corkum’s first demonstration of ultrashort pulse generation (~240 fs) from the CO2 laser,1 this short-pulse 10-μm light source is generating more interest in multiphoton excitation in photochemistry, in ultrafast processes in semiconductor materials, and in applications to laser particle acceleration.2 To increase the energy level of ultrashort pulses, a broad-bandwidth amplifier is required. For this purpose, high-pressure CO2 amplifiers (>10 atm) are commonly employed to utilize the pressure-broadened bandwidth.
© 1988 Optical Society of America
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