Efficient shortening of self-chirped picosecond pulses in a high-power CO(2) amplifier.
We report a factor-of-6 shortening of the 240-ps (FWHM) pulses in a triple-pass, 2.5-atm CO(2) amplifier. This technique is based on the self-phase modulation of a 10-mum pulse in a plasma after the first pass of amplification, followed by narrowing of this chirped pulse during further amplification. Subsequently, strong power broadening provides the necessary bandwidth to amplify 40-ps pulses to terawatt power levels.
Tochitsky
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Filip
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Narang
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Clayton
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Marsh
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Joshi
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