| 摘要 |
An apparatus includes a pulse conditioner and an amplifier. The pulse conditioner configured modifies a temporal intensity profile of an input laser pulse, thereby creating a conditioned laser pulse having conditioned temporal intensity profile with a misfit parameter, M, of less than 0.13, where: formula (I) where |Ψ(t)|2 represents the pulse temporal intensity profile of the conditioned laser pulse and |Ψ&Rgr;fit(t)|2 represents a parabolic fit of the conditioned laser pulse. The amplifier increases the power of the conditioned laser pulse creating an amplified laser pulse. In a method a temporal intensity profile of an input laser pulse having a pulse duration of at least 1 ps is modified to create a conditioned laser pulse, which is amplified to create an amplified laser pulse, which is temporally compressed to generate a compressed laser pulse having a compressed pulse duration less than the input pulse duration. The seed laser (102) may emit a Fourier-transform limited seed pulse with duration on the order of tens of ps and this pulse is launched into a standard single-mode telecommunication fiber (104) for broadening the pulse spectrum by self-phase modulation and GVD thereby resulting in the propagation of a higher-order soliton. The parabolic pulse may be amplified in an amplifier (106) and compressed in time by a compressor (108) resulting in high-power pulses of duration of about 1 ps and suitable for material processing. |
