Abstract
This paper reports recent experiments using VULCAN, a Nd-.glass amplifier sited at the Rutherford Appleton Laboratory, U.K., where 1 nj pulses from a novel laser diode pumped oscillator were amplified to energies of 25 J on target. Chirped pulse amplification (CPA) has been used in solid state laser systems to avoid the power limit set by nonlinear self phase modulation and self focusing that would otherwise prevent amplification of ultrashort pulses to high peak powers.1 The technique relies on stretching the short pulse from the oscillator, amplifying the stretched pulse, followed by compression to its original duration.
© 1994 Optical Society of America
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