Title :
Mutual injection-locking of two individual double-clad fibre lasers
Author :
Liu, Y. ; Chen, Y. ; Xu, L. ; Zhen, R. ; Wang, X. ; Lu, Y. ; Guo, Y. ; Wan, Q. ; Wang, H. ; Sun, B.
Author_Institution :
Opto-Electron. Facility, Wuhan Ordnance Noncommissioned Officers Acad., Wuhan
Abstract :
Phase-locking and coherent beam combination of two individual double-clad fibre lasers by a novel extra-cavity mutual injection-locking method are proposed and experimentally demonstrated. Steady interference stripes with high contrast ratio (about 0.5) are observed. The output power of the phase-locked array exceeds 11 W and the power-combining efficiency is about 80%. No power-restriction optical components are utilised in the phase-locking experiment and the output power can be further up-scaled.
Keywords :
fibre lasers; laser arrays; laser beams; laser mode locking; light interference; optical fibre cladding; coherent beam combination; contrast ratio; double-clad fibre laser; extra cavity mutual injection-locking method; interference stripes; phase locking; phase-locked array; power-combining efficiency;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2009.0172
