Passive alignment stability and auto-alignment of multipass amplifiers based on Fourier transforms
Optics
2019-05-01 v2
Abstract
The stability properties of Fourier-based multipass amplifier to misalignments (tilts) of its optical components has been investigated. For this purpose, a method to quantify the sensitivity to tilts based on the amplifier small signal gain has been elaborated and compared with measurements. To improve on the tilt stability by more than an order of magnitude a simple auto-alignment system has been proposed and tested. This study, combined with other investigations devoted to the stability of the output beam to variations of aperture and thermal lens effects of the active medium, qualifies the Fourier-based amplifier for the high-energy and the high-power sector.
Cite
@article{arxiv.1901.02769,
title = {Passive alignment stability and auto-alignment of multipass amplifiers based on Fourier transforms},
author = {Karsten Schuhmann and Klaus Kirch and Andreas Knecht and Miroslaw Marszalek and Francois Nez and Jonas Nuber and Randolf Pohl and Ivo Schulthess and Laura Sinkunaite and Manuel Zeyen and Aldo Antognini},
journal= {arXiv preprint arXiv:1901.02769},
year = {2019}
}
Comments
10 pages, 11 figures