Abstract
Shaping the temporal profile of subterawatt optical pulses with a femtosecond duration is demonstrated with the help of a programmable pulse shaper, which is based on a liquid–crystal spatial light modulator. For safe operation, we place the pulse shaper between regenerative and multipass amplifiers. We generate double pulses, whose respective component pulses have 0.27-TW peak power and 74-fs duration. The possibility of variously-shaped multiterawatt pulses is also discussed.
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