公开(公告)号：US09991664B1

公开(公告)日：2018-06-05

申请号：US15707196

申请日：2017-09-18

Applicant: SOOCHOW UNIVERSITY

Inventor： Xiao Yuan ,  Tiancheng Yu ,  Xiang Zhang ,  Fan Gao

IPC: H01S3/00 ,  H01S3/083 ,  H01S3/102 ,  H01S3/067 ,  H01S3/034 ,  H01S3/10 ,  H01S3/23

CPC classification number: H01S3/083 ,  H01S3/1024

Abstract: A high-efficiency high-power ring laser amplifier includes four polarizers, four amplifiers, fours lens, two filter apertures, two electro-optic switches, a mirror, a wavefront corrector. A bidirectional ring laser amplifier configuration with twin pulses is suitable for any type of gain media and pumping configurations. This amplifier configuration can effectively improve the extraction efficiency of the gain medium. The amplification configuration proposed by the present invention patent can realize the ring amplification for any number of rounds in principle, and can effectively control quality of the output laser beam and relax the restriction on the injected energy. The two spatial filters in the novel high-efficiency high-power ring laser amplifier of the present invention patent can effectively removing the spatial modulations in the laser beams, and the first and second spatial filters reimage the beam at wavefront corrector to mirror which can effectively inhibit the diffraction effect.

公开(公告)号：US12210166B2

公开(公告)日：2025-01-28

申请号：US17642695

申请日：2021-01-22

Applicant: SOOCHOW UNIVERSITY

Inventor： Xiang Zhang ,  Fan Gao ,  Nian Zhang ,  Xiao Yuan ,  Baoxing Xiong

IPC: G02B27/28 ,  G02B27/14

Abstract: The invention provides a beam optical axis self-stabilizing device and method based on reflection mechanical modulation. The device includes a polarized beam splitter, a quarter-wave plate, a structural reflecting element, and a driving source. The quarter-wave plate is located at an output end of the polarized beam splitter. The reflecting element is located at a side of the quarter-wave plate away from the polarized beam splitter. The driving source drives the structural reflecting element to rotate at a uniform speed with an optical axis as an axis. Incident light passes through the polarized beam splitter to obtain split light. The split light passes through the quarter-wave plate to enter the structural reflecting element. The structural reflecting element rotates so that the phase of reflected light varies with time. The reflected light is modulated by the quarter-wave plate and emitted through the polarized beam splitter, and a target beam is obtained.