Luka Černe (Author), Jaka Petelin (Author), Rok Petkovšek (Author)

Abstract

In this manuscript we present a true pulse-on-demand concept of a hybrid CPA laser system, consisting of a chirped-pulse fiber amplifier and an additional solid-state amplifier, capable of generating femtosecond pulses on demand without an external optical modulator/shutter. Pulse-on-demand operation is achieved by introducing idler pulses with a few nanoseconds duration and selectively switching between the femtosecond and idler pulses. The idler pulses are used to maintain a constant population inversion in the fiber amplifier as well as in the solid-state amplifier. Second harmonic generation (SHG) unit then effectively filters out the idler pulses due to their low peak power, leaving only a stable femtosecond pulse train. This concept is demonstrated on a CPA hybrid system that can generate pulses with up to 200 [mikro] J at 515 nm with a pulse duration under 450 fs. As there is no optical modulator at the laser output, the presented concept also enables further power scaling.

Keywords

fiber lasers;pulse on demand;hybrid lasers;ultrashort pulses;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UL FS - Faculty of Mechanical Engineering
UDC: 681.7.069.24(045)
COBISS: 17063707 Link will open in a new window
ISSN: 1094-4087
Views: 630
Downloads: 313
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Other data

Secondary language: Slovenian
Secondary keywords: vlakenski laserji;bliski na zahtevo;hibridni laserji;ultarkratki bliski;
Type (COBISS): Article
Pages: str. 7875-7888
Volume: ǂVol. ǂ28
Issue: ǂno. ǂ6
Chronology: Mar. 2020
DOI: 10.1364/OE.386769
ID: 12806418