公开(公告)号：US20250015551A1

公开(公告)日：2025-01-09

申请号：US18709678

申请日：2021-11-19

Applicant: BAE Systems Information and Electronic Systems Integration Inc.

Inventor： Spencer L. Horton ,  Ezra S. Allee

IPC: H01S3/067 ,  H01S3/094 ,  H01S3/0941 ,  H01S3/16 ,  H01S3/23

Abstract: Techniques to passively suppress or otherwise reduce stimulated Brillouin scattering (SBS) in a pumped fiber laser system. The system can be co-pumped with a tandem pumping technique, and counter-pumped with the direct diode pumping method. In an example, a pumped fiber laser system includes a fiber, a tandem pump, and a direct diode pump. The fiber has a core, an inner cladding around the core, and an outer cladding around the inner cladding. The tandem pump co-pumps light of a first wavelength in the inner cladding from a first end of the fiber, and the direct diode pump counter-pumps light of a second wavelength in the outer cladding from a second end of the fiber. A longitudinal temperature gradient can form along the fiber laser in response to this hybrid-pumping, which can combine both tandem and direct diode pumping.