Propagation of intense few-cycle laser pulse in a telecommunication-type optical fiber: analysis of the error introduced by the unidirectional approximation

2016/12/12 by Leonid Konev, Konev, Leonid, Yuri A. Shpolyanskiy +2
Engineering · Physics and Astronomy · #Advanced Fiber Laser Technologies #FOS: Physical sciences #Laser Design and Applications #Laser-Matter Interactions and Applications #Optics (physics.optics) #physics.optics

paper · pdf · doi:10.48550/arxiv.1612.03616

6 pages, 6 figures

openalex publication_date 2016/12/12 · arxiv created 2017/01/22 · arxiv updated 2017/01/24 · openalex created_date 2019/12/05 · openalex updated_date 2026/07/28

Abstract

Propagation of few-cycle laser pulses in optical fiber is investigated beyond the unidirectional approximation. Considered medium parameters include dispersion, Kerr and Raman nonlinearities. High intensities of ~10¹0 kW/cm² lead to generation of the octave-spanning continuum. The error of the unidirectional approximation is seen in simulations as two pulses propagating forwards and backwards, both remain weak under the considered conditions. Direct analytical estimate of the error is derived and verified numerically. It can be applied to a priory justification of the unidirectional approach.

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