This article is cited in 4 papers

Lasers

Simulation of gain anisotropy induced by linearly polarised pump radiation in a bipolar Nd : YAG laser

N. D. Milovskii^a, P. A. Khandokhin<sup>b

a</sup> Lobachevski State University of Nizhni Novgorod
^b Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod

Abstract: A model of a bipolar solid-state Nd : YAG laser is proposed, which takes into account the real orientation of the absorbing and emitting dipoles of active Nd³⁺ centres in the unit cell of yttrium aluminium garnet. The model describes the experimentally observed effect of gain anisotropy induced by linearly polarised pump radiation and predicts a new form of instability caused by the presence of two competing pump channels, which have not been considered previously in the literature.

Keywords: laser, polarisation mode, induced gain anisotropy, relaxation oscillations.

Received: 31.08.2018
Revised: 22.11.2018

 English version: Quantum Electronics, 2019, 49:5, 497–504

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