High-power, low-divergence, linear array of quasi-diffraction-limited beams supplied by tapered diodes.
We describe for the first time to our knowledge the performance for a linear array of tapered laser diodes with both fast- and slow-axis collimation using a microlens for fast-axis collimation and a laser-written phase plate for slow-axis collimation and correction of the residual fast-axis errors from lens aberrations, thermal lensing, astigmatism, pointing errors, and other wavefront distortions. The phase plate leads to M(2) factor reductions of 1.5 for the lensed array following the fast axis and 2.6 for the whole bar following the slow axis.
Bourdet
Gilbert L
GL
Laboratoire pour l'Utilisation des Lasers Intenses, Ecole Polytechnique, Centre National de la Recherche Scientifique, Commissariat a l'Energie Atomique, Université Pierre & Marie Curie, Route de Saclay, Palaiseau, France. gilbert.bourdet@polytechnique.fr
Hassiaoui
Imen
I
McBride
Roy
R
Monjardin
J F
JF
Baker
Howard
H
Michel
Nicolas
N
Krakowski
Michel
M