Abstract
A 100 W-class all-fiber linearly-polarized single-mode fiber laser at 1120 nm with an optical efficiency of 50% was demonstrated. The laser consists of a 4.2 m long Yb-doped polarization maintaining fiber with a core diameter of 10 μm and a pair of FBGs written in matched passive fiber. Linearly polarized output with a polarization extinction ratio of 15 dB is achieved by a cavity that selects both wavelength and polarization. Pulsed operations with square shaped pulses varying from 100 μs to 1 ms duration are achieved without relaxation oscillation.
Highlights
Because of their high brightness and convenient thermal management, fiber lasers have drawn extensive attention in last decade
High power laser at 1120 nm has a variety of applications, such as pumping Raman fiber amplifier at 1178 nm [1] for laser guide star and Tm-doped fiber laser [2]
The laser cavity consists of a 4.2 m long Yb-doped polarization maintaining fiber with a core diameter of 10 μm and a pair of fiber Bragg gratings (FBGs) written in the matched passive fiber
Summary
Because of their high brightness and convenient thermal management, fiber lasers have drawn extensive attention in last decade. High power laser at 1120 nm has a variety of applications, such as pumping Raman fiber amplifier at 1178 nm [1] for laser guide star and Tm-doped fiber laser [2]. Codemard et al reported a 100 W continuous wave (CW) Raman fiber laser operating at 1120 nm, cladding-pumped with a Yb-doped fiber laser [3]. Feng et al reported a Raman fiber laser at 1120 nm of more than 150 W, core-pumped by a 1070 nm Yb-doped fiber laser [4]. Pumped by a 1090 nm laser, a laser with output power of up to 12 W at 1179 nm was achieved by Kalita et al using a standard Yb-doped gain fiber [8]. We report a 100 W-class linearly-polarized single-mode Yb-doped fiber laser at 1120 nm with an optical efficiency of 50%. Because of lower quantum efficiency, the 1120 nm Yb-doped fiber laser experiences higher thermal load than the lasers of conventional wavelengths and requires better thermal management
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
