7 May 2012 Coherent coupling of spectrally broadband laser channels
Author Affiliations +
Abstract
This paper discusses the experimental study and provides the analysis of an innovative approach to the passive-coherent combining of a spectrally-broadband laser channel array. Conventional coherent laser beam combining methods use a single-step technique based on phase-control of radiation in the combining channels with the goal of reducing the output beam to its diffraction limits. The novelty of our method is a two-stage approach in beam combining that enables (1) to couple multiple channels into a single beam with a stable mode structure, and (2) to convert this coupled beam in to a diffraction-limited state by using a stationary wavefront corrector. By using this method with the laser cavity in a stable configuration we effectively demonstrated our approach. This resulted in an efficient coupling of multiple channels by oscillating a single high-index Hermit-Gaussian mode. The cavity-based beam combining technique facilitates phase locking of multiple spectrally-broadband channels and therefore allows the suppression of nonlinear effects in individual fiber channels.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Anatoliy Khizhnyak, Vladimir Markov, "Coherent coupling of spectrally broadband laser channels", Proc. SPIE 8381, Laser Technology for Defense and Security VIII, 83810O (7 May 2012); doi: 10.1117/12.918782; https://doi.org/10.1117/12.918782
PROCEEDINGS
11 PAGES


SHARE
RELATED CONTENT


Back to Top