Multicore Yb3+ doped silica fibre laser
Franczyk M., Pysz D., Buczyński R.
We report on the development of double-cladding active multicore fibre composed of seven single-mode cores of ytterbium doped silica. Laser action in laboratory fibre laser setup is achieved with 61% slope efficiency for optimum fibre length of 14.5 m using incoherent combining of beams generated in each single fibre core. The total mode effective area as a sum of effective areas of generated modes coming out from all cores is 1120 µm2, opening perspectives for high power scalability. The measured aggregated beam quality of M2 = 17.6 is determined by 95 µm distance between single mode active cores. The proposed fibre is a perspective component for development of high power all-fibre laser for lidars.
Laser Physics Letters, 2021, vol. 18, art. 125102, doi: 10.1088/1612-202X/ac308f
Opublikowano dnia - 2 listopada 2021 11:13
Ostatnia zmiana - 4 listopada 2021 12:01
Publikujący - Sekretariat IGF