Abstract
Coherent beam combination (CBC) of laser arrays is an efficient way to scale
brightness. We demonstrate CBC of two slab laser amplifiers based on active phase
locking. Instead of the complex phase detection system, intensity detection is used
and the feedback control signal is calculated based on the stochastic parallel
gradient descent (SPGD) algorithm. The experimental investigation on a 101.5-W CBC
of two slab amplifiers shows that the entire system in a closed loop performs well
for long-time observation. A combination efficiency of nearly 81% is realized. The
slab amplifier laser arrays are the coherent beams efficiently combined by active
phase locking based on the SPGD.
© 2011 Chinese Optics Letters
PDF Article
More Like This
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