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Pulses on demand in fibre and hybrid lasers
ID Petkovšek, Rok (Author), ID Agrež, Vid (Author), ID Petelin, Jaka (Author), ID Černe, Luka (Author), ID Bünting, Udo (Author), ID Podobnik, Boštjan (Author)

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Abstract
This paper presents an investigation of pulse-on-demand operation in fibre and hybrid lasers. Two methods for efficient gain control that enable the generation of laser pulses at arbitrary times with controlled pulse parameters are presented. The method of direct modulation of the pump power in the high-power laser oscillator is shown to generate pulses with a duration in the nanosecond range, with repetition rates varying during operation from a single shot to over 1 MHz. An advanced method using a combination of marker and idler seeding a fibre amplifier chain is investigated. Such a system can easily achieve repetition rates of several tens of MHz. The lasersʼ performances were successfully tested in a real environment on an industrial platform for laser transfer printing. Similar concepts were used for a laser source with ultrashort laser pulses (femtosecond range) on demand by using a mode-locked seed as a source and a solid-state amplifier to achieve high pulse energy and peak power.

Language:English
Keywords:pulse on demand, fibre lasers, gain control, arbitrary repetition rate
Work type:Article
Typology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Publication status:Published
Publication version:Version of Record
Year:2019
Number of pages:Str. 680-689
Numbering:Vol. 65, no. 11/12
PID:20.500.12556/RUL-113739 This link opens in a new window
UDC:535(045)
ISSN on article:0039-2480
DOI:10.5545/sv-jme.2019.6352 This link opens in a new window
COBISS.SI-ID:16944411 This link opens in a new window
Publication date in RUL:30.01.2020
Views:1489
Downloads:588
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Record is a part of a journal

Title:Strojniški vestnik
Shortened title:Stroj. vestn.
Publisher:Zveza strojnih inženirjev in tehnikov Slovenije [etc.], = Association of Mechanical Engineers and Technicians of Slovenia [etc.
ISSN:0039-2480
COBISS.SI-ID:762116 This link opens in a new window

Secondary language

Language:Slovenian
Title:Pulzi na zahtevo v vlakenskih in hibridnih laserjih
Keywords:pulzi na zahtevo, vlakenski laserji, nadzor ojačenja, poljubna ponavljalna frekvenca

Projects

Funder:ARRS - Slovenian Research Agency
Funding programme:Programska skupina
Project number:P2-0270
Name:Proizvodni sistemi, laserske tehnologije in spajanje materialov
Funder:ARRS - Slovenian Research Agency
Funding programme:Aplikativni raziskovali program
Project number:L2-8183
Name:VISOKO PRILAGODLJIVI VLAKENSKI LASERJI VELIKIH MOČI ZA UPORABO V INDUSTRIJI
Funder:ARRS - Slovenian Research Agency
Funding programme:Aplikativni raziskovali program
Project number:L2-9240
Name:Ultrakratki laserski pulzi na zahtevo
Funder:ARRS - Slovenian Research Agency
Funding programme:Aplikativni raziskovali program
Project number:L2-9254
Name:Prostorsko in časovno oblikovanje laserske svetlobe za minimalno invazivne oftalmološke posege

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