公开(公告)号：US20230296959A1

公开(公告)日：2023-09-21

申请号：US18017675

申请日：2021-06-30

Applicant: KEMING DU

Inventor： KEMING DU

IPC: G02F1/35

CPC classification number: G02F1/3525 ,  G02F1/3503 ,  G02F1/3542 ,  G02F1/3505 ,  G02F2203/50

Abstract: An optical arrangement for enlarging spectral bandwidths by nonlinear self-phase modulation for shortening ultrashort pulses using a multipass cell and a nonlinear medium. The nonlinear medium is arranged within the multipass cell, and a laser beam having ultrashort pulses passes through the nonlinear medium multiple times. The laser beam is coupled into the multipass cell by way of a shaping optical unit. The laser beam is shaped into an astigmatic beam and coupled into the multipass cell by way of the shaping optical unit.

公开(公告)号：US20230387667A1

公开(公告)日：2023-11-30

申请号：US18031881

申请日：2021-10-12

Applicant: KEMING DU

Inventor： KEMING DU

IPC: H01S5/50 ,  H01S3/042 ,  H01S3/06

CPC classification number: H01S5/5027 ,  H01S3/042 ,  H01S3/0604

Abstract: An amplifier arrangement for increasing power and energy includes a multipass cell and at least one gain medium, wherein the multipass cell has concavely curved mirrors and the gain medium is arranged within the multipass cell in such a way that the pump radiation passes through the gain medium multiple times and is absorbed by the gain medium and wherein a laser beam to be amplified passes through the gain medium, characterized in that the mirrors are designed and arranged such that a White multipass cell is formed and the pump radiation and the laser beam to be amplified have large cross-sections at the positions at which mirrors, gain media and other optical components are arranged.