Abstract
A Dammann-grating-based aperture filling technology is demonstrated in a passive coherent beam combination fiber amplifier array, which is phase-locked using an all-optical feedback loop. The maximum output power is 206 W. The combined efficiency of a three channels aperture filling is discussed and demonstrated to vary with the output power. Perturbative factors leading to the loss of the combined efficiency are theoretically simulated and the key factor is the residual phase error. Theoretical and experimental results show that this technology has good potential to achieve higher brightness in a single beam.
© 2014 IEEE
PDF Article
More Like This
Passive coherent beam combining of quantum-cascade lasers with a Dammann grating
G. Bloom, C. Larat, E. Lallier, G. Lehoucq, S. Bansropun, M.-S. L. Lee-Bouhours, B. Loiseaux, M. Carras, X. Marcadet, G. Lucas-Leclin, and P. Georges
Opt. Lett. 36(19) 3810-3812 (2011)
Cited By
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Login to access Optica Member Subscription