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

Claim 4:
5. A laser pulse energy amplification method configured to perform an energy amplification on a seed laser source, comprising the following steps:
receiving a seed laser pulse output by the seed laser source;
introducing a nonlinear phase shift into the seed laser pulse by stretching a spectrum of the seed laser pulse in a frequency domain when hand stretching the seed laser pulse in a time domain with a peak power of the seed laser reduced, and outputting an energy-amplified laser pulse with a nonlinear phase to a pulse shaper; and
measuring a shape and a nonlinear phase of the laser pulse; and
performing a phase compensation on the laser pulse according to the shape and the nonlinear phase of the laser pulse, compressing the laser pulse into a Gaussian or Gaussian-like shape, and outputting the femtosecond laser pulse close to a Fourier transform limit.