Modeling of Passive Q-Switched Yb, Er Glass Lasers with Transverse Pumping by Linear Laser Diode Arrays

A mathematical model of a passively Q-switched solid-state laser based on ytterbium and erbium codoped active media with transverse pumping by linear laser diode arrays has been developed. The gain in the laser is calculated using rate equations taking into account the space-time dependence of the p...

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Main Authors: A. S. Yasukevich, V. E. Kisel
Format: Article
Language:English
Published: Belarusian National Technical University 2025-03-01
Series:Приборы и методы измерений
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Online Access:https://pimi.bntu.by/jour/article/view/921
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author A. S. Yasukevich
V. E. Kisel
author_facet A. S. Yasukevich
V. E. Kisel
author_sort A. S. Yasukevich
collection DOAJ
description A mathematical model of a passively Q-switched solid-state laser based on ytterbium and erbium codoped active media with transverse pumping by linear laser diode arrays has been developed. The gain in the laser is calculated using rate equations taking into account the space-time dependence of the pump radiation intensity in the laser element. The output laser characteristics, the pulse energy, the peak pulse power and the pulse duration, are calculated using analytical equations obtained for a passively Q-switched solid-state laser in the approximation of a "slow" saturable absorber. The model allows one to find the range of parameters of the active element, passive modulator, resonator, and pumping system at which the generation threshold is reached and the laser generates pulses with the required energy and duration. Modeling results were used for the experimental development of lasers with an active element based on phosphate glass doped by ytterbium and erbium ions. The energy and duration of the output light pulses were ≈ 1 mJ, ≈ 40 ns, and ≈ 2 mJ and ≈ 20 ns, depending on the content of ytterbium and erbium ions in the active element, as well as on the initial transmission of the passive modulator and the resonator parameters.
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publishDate 2025-03-01
publisher Belarusian National Technical University
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series Приборы и методы измерений
spelling doaj-art-e19c441079ee464d8b4154b3a23f9fb02025-08-04T14:24:21ZengBelarusian National Technical UniversityПриборы и методы измерений2220-95062414-04732025-03-01161243410.21122/2220-9506-2025-16-1-24-34667Modeling of Passive Q-Switched Yb, Er Glass Lasers with Transverse Pumping by Linear Laser Diode ArraysA. S. Yasukevich0V. E. Kisel1Belarusian National Technical UniversityBelarusian National Technical UniversityA mathematical model of a passively Q-switched solid-state laser based on ytterbium and erbium codoped active media with transverse pumping by linear laser diode arrays has been developed. The gain in the laser is calculated using rate equations taking into account the space-time dependence of the pump radiation intensity in the laser element. The output laser characteristics, the pulse energy, the peak pulse power and the pulse duration, are calculated using analytical equations obtained for a passively Q-switched solid-state laser in the approximation of a "slow" saturable absorber. The model allows one to find the range of parameters of the active element, passive modulator, resonator, and pumping system at which the generation threshold is reached and the laser generates pulses with the required energy and duration. Modeling results were used for the experimental development of lasers with an active element based on phosphate glass doped by ytterbium and erbium ions. The energy and duration of the output light pulses were ≈ 1 mJ, ≈ 40 ns, and ≈ 2 mJ and ≈ 20 ns, depending on the content of ytterbium and erbium ions in the active element, as well as on the initial transmission of the passive modulator and the resonator parameters.https://pimi.bntu.by/jour/article/view/921mathematical model of a passive q-switched solid-state laseryb3+ and er3+ ions co-doped phosphate glassestransverse laser pumping by using linear laser diode arrays
spellingShingle A. S. Yasukevich
V. E. Kisel
Modeling of Passive Q-Switched Yb, Er Glass Lasers with Transverse Pumping by Linear Laser Diode Arrays
Приборы и методы измерений
mathematical model of a passive q-switched solid-state laser
yb3+ and er3+ ions co-doped phosphate glasses
transverse laser pumping by using linear laser diode arrays
title Modeling of Passive Q-Switched Yb, Er Glass Lasers with Transverse Pumping by Linear Laser Diode Arrays
title_full Modeling of Passive Q-Switched Yb, Er Glass Lasers with Transverse Pumping by Linear Laser Diode Arrays
title_fullStr Modeling of Passive Q-Switched Yb, Er Glass Lasers with Transverse Pumping by Linear Laser Diode Arrays
title_full_unstemmed Modeling of Passive Q-Switched Yb, Er Glass Lasers with Transverse Pumping by Linear Laser Diode Arrays
title_short Modeling of Passive Q-Switched Yb, Er Glass Lasers with Transverse Pumping by Linear Laser Diode Arrays
title_sort modeling of passive q switched yb er glass lasers with transverse pumping by linear laser diode arrays
topic mathematical model of a passive q-switched solid-state laser
yb3+ and er3+ ions co-doped phosphate glasses
transverse laser pumping by using linear laser diode arrays
url https://pimi.bntu.by/jour/article/view/921
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AT vekisel modelingofpassiveqswitchedyberglasslaserswithtransversepumpingbylinearlaserdiodearrays