Patent ID: 11955762
Assignee: FEMTOSECOND RESEARCH CENTER CO., LTD.
Field: Optics (Instruments)
Classification: CPC H  G | IPC G  H

Claim 0:
1. A laser pulse energy amplification device configured to perform an energy amplification on a seed laser source, comprising a pulse amplifier and a pulse shaper that are connected in sequence, wherein
the pulse amplifier is connected to an output port of the seed laser source, and an output end of the pulse shaper outputs a femtosecond laser pulse;
the seed laser source is configured to generate and input a seed laser pulse to the pulse amplifier;
the pulse amplifier is configured to introduce a nonlinear phase shift into the seed laser pulse by stretching a spectrum of the seed laser pulse in a frequency domain and stretching the seed laser pulse in a time domain with a peak power of the seed laser pulse reduced, and output an enemy-amplified laser pulse with a nonlinear phase to the pulse shaper; and
the pulse shaper comprises:
a measurement module configured to measure a shape and a nonlinear phase of the laser pulse; and
a compensation module configured to perform a phase compensation on the laser pulse according to the shape and the nonlinear phase of the laser pulse, compress the laser pulse into a Gaussian or Gaussian-like shape, and output the femtosecond laser pulse close to a Fourier transform limit.