Mid-IR tunable CW and passively Q-switched laser operation of Dy-doped fluoride fiber

Yuchen Wang; Toney T. Fernandez; Pinghua Tang; Nicola Coluccelli; Stuart D. Jackson; Mario C. Falconi; Francesco Prudenzano; Paolo Laporta; Gianluca Galzerano

doi:10.1364/OME.453046

Mid-IR tunable CW and passively Q-switched laser operation of Dy-doped fluoride fiber

Yuchen Wang^*, Toney T. Fernandez, Pinghua Tang, Nicola Coluccelli, Stuart D. Jackson, Mario C. Falconi, Francesco Prudenzano, Paolo Laporta, Gianluca Galzerano

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

14 Citations (Scopus)

Abstract

We report a comprehensive characterization of tunable continuous-wave (CW) and passive Q-switching laser performance of Dy-doped zirconium fluoride fiber emitting around 3 µm. The in-band pumped CW laser operation is investigated for pump wavelengths varying from 2.7 µm to 2.825 µm, for fiber lengths ranging from 0.4 m to 2 m, and for output coupling efficiency from 10% to 50%, leading to a maximum laser slope efficiency of 44% and a tuning range larger than 300 nm. With Findlay-Clay analysis and Rigrod analyses, optimal cavity parameters are retrieved, paving the way for further optimizations in performance. The passively Q-switched laser operation of Dy-doped fluoride fiber is achieved employing a semiconductor saturable absorber mirror for the first time, demonstrating a stable operation with a minimum pulse duration of 580 ns, a highest repetition frequency of 103 kHz and a pulse energy up to 300 nJ.

Original language	English
Pages (from-to)	1502-1511
Number of pages	10
Journal	Optical Materials Express
Volume	12
Issue number	4
DOIs	https://doi.org/10.1364/OME.453046
Publication status	Published - 1 Apr 2022

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title = "Mid-IR tunable CW and passively Q-switched laser operation of Dy-doped fluoride fiber",

abstract = "We report a comprehensive characterization of tunable continuous-wave (CW) and passive Q-switching laser performance of Dy-doped zirconium fluoride fiber emitting around 3 µm. The in-band pumped CW laser operation is investigated for pump wavelengths varying from 2.7 µm to 2.825 µm, for fiber lengths ranging from 0.4 m to 2 m, and for output coupling efficiency from 10% to 50%, leading to a maximum laser slope efficiency of 44% and a tuning range larger than 300 nm. With Findlay-Clay analysis and Rigrod analyses, optimal cavity parameters are retrieved, paving the way for further optimizations in performance. The passively Q-switched laser operation of Dy-doped fluoride fiber is achieved employing a semiconductor saturable absorber mirror for the first time, demonstrating a stable operation with a minimum pulse duration of 580 ns, a highest repetition frequency of 103 kHz and a pulse energy up to 300 nJ.",

author = "Yuchen Wang and Fernandez, {Toney T.} and Pinghua Tang and Nicola Coluccelli and Jackson, {Stuart D.} and Falconi, {Mario C.} and Francesco Prudenzano and Paolo Laporta and Gianluca Galzerano",

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T1 - Mid-IR tunable CW and passively Q-switched laser operation of Dy-doped fluoride fiber

AU - Wang, Yuchen

AU - Fernandez, Toney T.

AU - Tang, Pinghua

AU - Coluccelli, Nicola

AU - Jackson, Stuart D.

AU - Falconi, Mario C.

AU - Prudenzano, Francesco

AU - Laporta, Paolo

AU - Galzerano, Gianluca

PY - 2022/4/1

Y1 - 2022/4/1

N2 - We report a comprehensive characterization of tunable continuous-wave (CW) and passive Q-switching laser performance of Dy-doped zirconium fluoride fiber emitting around 3 µm. The in-band pumped CW laser operation is investigated for pump wavelengths varying from 2.7 µm to 2.825 µm, for fiber lengths ranging from 0.4 m to 2 m, and for output coupling efficiency from 10% to 50%, leading to a maximum laser slope efficiency of 44% and a tuning range larger than 300 nm. With Findlay-Clay analysis and Rigrod analyses, optimal cavity parameters are retrieved, paving the way for further optimizations in performance. The passively Q-switched laser operation of Dy-doped fluoride fiber is achieved employing a semiconductor saturable absorber mirror for the first time, demonstrating a stable operation with a minimum pulse duration of 580 ns, a highest repetition frequency of 103 kHz and a pulse energy up to 300 nJ.

AB - We report a comprehensive characterization of tunable continuous-wave (CW) and passive Q-switching laser performance of Dy-doped zirconium fluoride fiber emitting around 3 µm. The in-band pumped CW laser operation is investigated for pump wavelengths varying from 2.7 µm to 2.825 µm, for fiber lengths ranging from 0.4 m to 2 m, and for output coupling efficiency from 10% to 50%, leading to a maximum laser slope efficiency of 44% and a tuning range larger than 300 nm. With Findlay-Clay analysis and Rigrod analyses, optimal cavity parameters are retrieved, paving the way for further optimizations in performance. The passively Q-switched laser operation of Dy-doped fluoride fiber is achieved employing a semiconductor saturable absorber mirror for the first time, demonstrating a stable operation with a minimum pulse duration of 580 ns, a highest repetition frequency of 103 kHz and a pulse energy up to 300 nJ.

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SP - 1502

EP - 1511

JO - Optical Materials Express

JF - Optical Materials Express

IS - 4

ER -

Mid-IR tunable CW and passively Q-switched laser operation of Dy-doped fluoride fiber

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