This article is cited in 2 papers

Coherent beam addition

Phasing of two amplifier channels for the coherent combining of laser beams with a total power of 60 W

A. I. Trikshev^ab, Yu. N. Pyrkov^a, V. B. Tsvetkov<sup>ac

a</sup> A.M. Prokhorov General Physics Institute Russian Academy of Sciences, Moscow
^b Ulyanovsk State University
^c Moscow Engineering Physics Institute (National Nuclear Research University)

Abstract: We have demonstrated stable operation of a system for maintaining a constant phase difference between two laser channels with a total output power of 60 W. The system is based on a twochannel fibre amplifier with phase modulators based on piezoceramic spools. At a main piezo element modulation frequency of 11 kHz, the phasing time after thermal and mechanical influences on the active medium is 100 ms.

Keywords: phase modulation, synchronous detection, coherent combining.

Received: 16.05.2017
Revised: 25.09.2017

 English version: Quantum Electronics, 2017, 47:11, 1045–1048

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