| 摘要 |
The invention relates to a system for the optical amplification of high-energy ultrashort light pulses, said system comprising: an oscillator that can emit light pulses of duration t0 subpicosecond, a pre-compensator, and a solid optical amplifier that can amplify the chirped light pulses. According to the invention, the pre-compensator has a negative group velocity dispersion, said pre-compensator being capable of generating negatively chirped light pulses, and the optical amplifier has a positive group velocity dispersion, said optical amplifier being disposed such as to receive and amplify the negatively chirped light pulses. The optical amplifier is configured such that the light pulses can induce a widening of the spectral gain band ∆v by means of self-phase modulation, such as to generate amplified, time-compressed light pulses of duration t3 which is shorter than the duration t=1/∆n of the bandwidth limitation of the optical amplifier. |
