Pulses on demand in fibre and hybrid lasers

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

Povzetek

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.

Ključne besede

pulse on demand;fibre lasers;gain control;arbitrary repetition rate;

Podatki

Jezik:	Angleški jezik
Leto izida:	2019
Tipologija:	1.01 - Izvirni znanstveni članek
Organizacija:	UL FS - Fakulteta za strojništvo
UDK:	535(045)
COBISS:	16944411
ISSN:	0039-2480
Matična publikacija:	Strojniški vestnik
Št. ogledov:	688
Št. prenosov:	355
Ocena:	0 (0 glasov)
Metapodatki:

Ostali podatki

Sekundarni jezik:	Slovenski jezik
Sekundarni naslov:	Pulzi na zahtevo v vlakenskih in hibridnih laserjih
Sekundarne ključne besede:	pulzi na zahtevo;vlakenski laserji;nadzor ojačenja;poljubna ponavljalna frekvenca;
Vrsta dela (COBISS):	Članek v reviji
Strani:	str. 680-689, SI 87
Letnik:	ǂVol. ǂ65
Zvezek:	ǂno. ǂ11/12
Čas izdaje:	Nov.-Dec. 2019
DOI:	10.5545/sv-jme.2019.6352
ID:	11394022