Diode-pumped mid-infrared fiber laser with 50% slope efficiency

Aydın, Yiğit Ozan; Fortin, Vincent; Maes, Frédéric; Jobin, Frédéric; Jackson, Stuart D.; Vallée, Réal; Bernier, Martin

doi:10.1364/optica.4.000235

Cited by 89 publications

(21 citation statements)

References 17 publications

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“…It had a reflectivity of ∼30% at 3.552 μm, a bandwidth of about 5 nm with similar loss values as compared to the high-reflective grating. Enabled by the ability to inscribe tailored FBGs into various erbiumdoped ZBLAN fibers, Aydin et al also demonstrated that the slope efficiency for emission at 2.8 μm can exceed the Stokes limit and can reach values of up to 50% if the two adjacent transitions of the erbium ion that correspond to emission at 2.8 μm and 1.6 μm, respectively, are cascaded [41]. To achieve this, the erbium fluoride fiber laser cavity consisted of a highly reflective input FBG with a reflectivity of ࣙ99.5% centered at 2.825 μm and Fresnel reflection on the opposite side was utilized to couple the mid-infrared light out.…”

Section: Phase Mask Techniquementioning

confidence: 99%

Grating Inscription Into Fluoride Fibers: A Review

2019

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First demonstrated over four decades ago, fiber gratings, and in particular fiber Bragg gratings (FBGs), have become indispensable and ubiquitous components within fiber laser cavities as well as optical communication networks and sensor systems. Because of their overwhelming use, the bulk of published work to date has concentrated on fibers that are composed of silica-based glasses, yet those become virtually opaque at wavelengths above 2 μm, i.e., in the technically increasingly important mid-infrared part of the electromagnetic spectrum. Soft glass fluoride fibers on the other hand, in particular those composed of ZBLAN (abbreviation for ZrF 4-BaF 2-LaF 3-AlF 3-NaF), offer low-loss transmission out to wavelengths of up to almost 4 μm. However, while fiber manufacturing itself has now reached a high level of maturity, with passive fiber attenuation levels as low as 1 dB/km becoming commercially available, grating fabrication in these fibers remains challenging, and research into suitable inscription techniques is still a very active and ongoing scientific field. This review aims to provide an overview of work that has been done in this area to date with an emphasis on femtosecond-laser based fabrication methods.

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Section: Phase Mask Techniquementioning

confidence: 99%

Grating Inscription Into Fluoride Fibers: A Review

2019

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“…Owing to their compact structure, high conversion efficiency and robust operation, high-power fiber lasers have attracted much research interest and have been widely employed in many fields [1][2][3][4] . Rare-earth-doped fiber lasers, as a significant mainstay of high-power fiber lasers [5][6][7][8][9] , however, are challenged by waste heat accumulation in the active fiber [10] , especially with the power increasing beyond kilowatt level [11][12][13][14][15] . The quantum defect (QD) is one of the most important heat sources in the gain fiber, which could result in serious thermal effects on fiber lasers, such as the thermal lens effect, thermal mode instability and additional noise [16][17][18] .…”

Section: Introductionmentioning

confidence: 99%

Cladding-pumped Raman fiber laser with 0.78% quantum defect enabled by phosphorus-doped fiber

et al. 2022

High Pow Laser Sci Eng

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Quantum defect (QD) is an important issue that demands prompt attention in high-power fiber laser. Large QD may aggravate the thermal load in the laser, which would impact the frequency and amplitude noise, mode stability and threaten the security of high-power laser system. Here, we propose and demonstrate a cladding-pumped Raman fiber laser (RFL) with QD <1%. Using the Raman gain of the boson peak in a phosphorusdoped fiber to enable the cladding pump, the QD is reduced to as low as 0.78% with a 23.7 W output power. To our knowledge, this is the lowest QD ever reported in claddingpumped RFL. Furthermore, the output power can be scaled to 47.7 W with a QD of 1.29%. This work not only offers a preliminary platform for the realization of high-power low-QD fiber laser, but also proves low-QD fiber laser's great potential in power scaling.

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“…In 2015, a 30-W Er 3+ -doped all-fiber laser operating at 2938 nm was demonstrated by using ZBLAN fiber Bragg gratings to form the all-fiber laser cavity and combining several high power laser diodes near 980 nm to provide a total pump power of 188 W [17]. The stokes limit has been exceeded in a 2.8 µm cascaded laser with 50% efficiency in 2017, which paves the way to 100-W-level mid-infrared fiber laser [18]. In 2018, a 2824 nm passive cooled Er 3+ -doped fluoride fiber approaches an average output power of 41.6 W, which is the highest output average power achieved with the mid-infrared fiber laser [19].…”

Section: Introductionmentioning

confidence: 99%

Efficient energy transfer from Er³⁺ to Ho³⁺ and Dy³⁺ in ZBLAN glass

et al. 2020

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Spectroscopic properties of erbium (Er 3+)-, holmium (Ho 3+)-, dysprosium (Dy 3+)doped and Er 3+ /Ho 3+ , Er 3+ /Dy 3+ co-doped ZBLAN (ZrF 4-BaF 2-LaF 3-AlF 3-NaF) glasses were studied. The experimental results show that efficient energy transfer from Er 3+ to Ho 3+ and Dy 3+ occurs in the Er 3+ /Ho 3+ and Er 3+ /Dy 3+ co-doped ZBLAN glasses, respectively. This valuable discovery enables us to design and develop high power Ho 3+-doped and Dy 3+-doped ZBLAN fiber lasers in the 3 µm wavelength region that can be pumped with readily available high-efficiency, high-power diode laser pumps at 980 nm.

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Diode-pumped mid-infrared fiber laser with 50% slope efficiency

Cited by 89 publications

References 17 publications

Grating Inscription Into Fluoride Fibers: A Review

Grating Inscription Into Fluoride Fibers: A Review

Cladding-pumped Raman fiber laser with 0.78% quantum defect enabled by phosphorus-doped fiber

Efficient energy transfer from Er³⁺ to Ho³⁺ and Dy³⁺ in ZBLAN glass

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Diode-pumped mid-infrared fiber laser with 50% slope efficiency

Cited by 89 publications

References 17 publications

Grating Inscription Into Fluoride Fibers: A Review

Grating Inscription Into Fluoride Fibers: A Review

Cladding-pumped Raman fiber laser with 0.78% quantum defect enabled by phosphorus-doped fiber

Efficient energy transfer from Er3+ to Ho3+ and Dy3+ in ZBLAN glass

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Product

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Efficient energy transfer from Er³⁺ to Ho³⁺ and Dy³⁺ in ZBLAN glass