Amplification of nanosecond pulses in a single-mode erbium-doped fluoride fibre amplifier

Autor: Chichkov, Nikolai B., Ray, Paulami, Cozic, Solenn, Yadav, Amit, Joulain, Franck, Smirnov, Semyon V., Hinze, Ulf, Poulain, Samuel, Rafailov, Edik U.
Jazyk: angličtina
Rok vydání: 2022
ISSN: 1941-0174
Popis: We investigate the amplification of nanosecond pulses in a single-mode Er-fluoride fibre amplifier. A PPLN-based optical parametric oscillator (OPO) with a Q-switched Nd:YAG pump laser was used to generate seed pulses at a wavelength of 2790 nm. The OPO system produced seed pulses with sub-10 ns pulse durations and pulse energies of 0.5 μJ at a repetition rate of 10 kHz. These seed pulses were amplified in a single-mode Erbium-fluoride fibre amplifier, consisting of 2.2 m of double-clad fibre with a doping concentration of 7 mol%. Using this setup, we demonstrate gain values of up to 20 dB, output pulse energies of 52.7 μJ, and peak powers of more than 8 kW.
Databáze: OpenAIRE