Abstract

We report on efficient intracavity coherent addition of several single high-order mode distributions in a multichannel laser resonator. The phase locking and coherent addition is achieved by using an intracavity interferometric beam combiner. The principle, configuration, and experimental results with pulsed Nd:YAG Laguerre–Gaussian ${\mathrm{TEM}}_{01}$ and ${\mathrm{TEM}}_{02}$ laser beam distributions are presented. The results reveal more than 95% combining efficiency with a nearly pure high-order mode output beam distribution in both free-running and Q-switched operation.

© 2005 Optical Society of America

Intracavity coherent addition of 16 laser distributions

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