Abstract

A technique for simultaneous beam combination and aperture filling of a coherent laser array that uses a conjugate Dammann grating is proposed. It can convert light from a coherent laser array into a single-lobed far field with high quality. An experiment with a simulated $5\times 5$ 2D coherent laser array using an aperture mask has been performed. The feasibility of the proposed scheme is verified. It provides an important basis for achieving a high-power and high-brightness laser beam from an actual coherent laser array.

© 2010 Optical Society of America

Coherent beam superposition of ten diode lasers with a Dammann grating

David Pabœuf, Florian Emaury, Sébastien de Rossi, Raymond Mercier, Gaëlle Lucas-Leclin, and Patrick Georges
Opt. Lett. 35(10) 1515-1517 (2010)

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)

Efficient conversion of light from sparse laser arrays into single-lobed far field using phase structures

M. Khajavikhan, A. Hoyer-Leitzel, and J. R. Leger
Opt. Lett. 33(20) 2377-2379 (2008)

Design, fabrication, and characterization of circular Dammann gratings based on grayscale lithography

Uriel Levy, Boris Desiatov, Ilya Goykhman, Tali Nachmias, Avi Ohayon, and Sheffer E. Meltzer
Opt. Lett. 35(6) 880-882 (2010)

Encoding generalized phase functions on Dammann gratings

Ignacio Moreno, Jeffrey A. Davis, Don M. Cottrell, N. Zhang, and X.-C. Yuan
Opt. Lett. 35(10) 1536-1538 (2010)