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Proceedings Paper

Phase locking of laser arrays: problems and solutions
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Paper Abstract

Simple way to increase total laser power at the target is combining of multiple beams from a laser array. For incoherent operation of N lasers, an on-axis intensity in the far-field can be increased N times. By establishing coherence across the N lasers in the array, additional N-times gain in the on-axis intensity can be achieved. Known techniques for optical coupling arrangement between lasers in the array are overviewed with analysis of their advantages and shortcomings. Principal causes for reduction of far-field on-axis intensity from laser arrays are discussed demonstrating necessity to seek compromise conditions between high laser array efficiency and optical quality of a combined beam.

Paper Details

Date Published: 16 August 2000
PDF: 11 pages
Proc. SPIE 4065, High-Power Laser Ablation III, (16 August 2000); doi: 10.1117/12.407393
Show Author Affiliations
Anatoly P. Napartovich, Troitsk Institute for Innovation and Fusion Research (Russia)

Published in SPIE Proceedings Vol. 4065:
High-Power Laser Ablation III
Claude R. Phipps, Editor(s)

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