Femtosecond CPA hybrid laser system with pulse-on-demand operation

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

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.

• Jezik: Angleški jezik
• Ključne besede: fiber lasers, pulse on demand, hybrid lasers, ultrashort pulses
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FS - Fakulteta za strojništvo
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2020
• Št. strani: Str. 7875-7888
• Številčenje: Vol. 28, no. 6, art. 386769
• PID: 20.500.12556/RUL-126438
• UDK: 681.7.069.24(045)
• ISSN pri članku: 1094-4087
• DOI: 10.1364/OE.386769
• COBISS.SI-ID: 17063707

Avtorske pravice

V članku navedeno: "© 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement"; https://www.osapublishing.org/library/license_v1.cfm (22. 4. 2021).

• Datum objave v RUL: 22.04.2021

Gradivo je del revije

• Naslov: Optics express
• Skrajšan naslov: Opt. express
• Založnik: Optical Society of America
• ISSN: 1094-4087
• COBISS.SI-ID: 8636438

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: vlakenski laserji, bliski na zahtevo, hibridni laserji, ultrakratki bliski