Pulses on demand in fibre and hybrid lasers

Petkovšek, Rok (author), Agrež, Vid (author), Petelin, Jaka (author), Černe, Luka (author), Bünting, Udo (author), Podobnik, Boštjan (author)

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
• UDC: 535(045)
• ISSN on article: 0039-2480
• DOI: 10.5545/sv-jme.2019.6352
• COBISS.SI-ID: 16944411
• Publication date in RUL: 30.01.2020

PETKOVŠEK, Rok, AGREŽ, Vid, PETELIN, Jaka, ČERNE, Luka, BÜNTING, Udo and PODOBNIK, Boštjan, 2019, Pulses on demand in fibre and hybrid lasers. Strojniški vestnik [online]. 2019. Vol. 65, no. 11/12, p. 680–689. [Accessed 8 April 2025]. DOI 10.5545/sv-jme.2019.6352. Retrieved from: https://repozitorij.uni-lj.si/IzpisGradiva.php?lang=eng&id=113739

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

Secondary language

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