An exhaustive mathematical model of a dysprosium-doped ZBLAN fiber laser is developed in order to investigate pulsed emission at 3000 nm wavelength. It has been qualitatively validated by preliminary experiments. Operation in Q-switching regime is obtained by including a semiconductor saturable absorber mirror (SESAM) in the laser cavity. The model is based on the rate and power propagation equations together with realistic optical and spectroscopic parameters. Preliminary simulation results promise efficient pulsed emission with output pulses having a duration as short as 983 ns and a tunable repetition rate in the range 24-35 kHz, by varying the input pump power at 2825 nm wavelength from 0.5 W to 0.7 W. Preliminary experiments have provided optical pulses of 1.4 μs duration and 26 kHz repetition rate when excited with a 0.65 W pump.

Modeling of a SESAM-based dysprosium-doped ZBLAN fiber laser operating in Q-switching regime

M. C. FALCONI
Membro del Collaboration Group
;
A. M. LOCONSOLE
Membro del Collaboration Group
;
A. ANNUNZIATO
Membro del Collaboration Group
;
F. PRUDENZANO
Membro del Collaboration Group
2022

Abstract

An exhaustive mathematical model of a dysprosium-doped ZBLAN fiber laser is developed in order to investigate pulsed emission at 3000 nm wavelength. It has been qualitatively validated by preliminary experiments. Operation in Q-switching regime is obtained by including a semiconductor saturable absorber mirror (SESAM) in the laser cavity. The model is based on the rate and power propagation equations together with realistic optical and spectroscopic parameters. Preliminary simulation results promise efficient pulsed emission with output pulses having a duration as short as 983 ns and a tunable repetition rate in the range 24-35 kHz, by varying the input pump power at 2825 nm wavelength from 0.5 W to 0.7 W. Preliminary experiments have provided optical pulses of 1.4 μs duration and 26 kHz repetition rate when excited with a 0.65 W pump.
RiNEm 2022
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11589/245000
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