Towards power scaling of 28  μm fiber lasers

Aydın, Yiğit Ozan; Fortin, Vincent; Vallée, Réal; Bernier, Martin

doi:10.1364/ol.43.004542

Cited by 188 publications

(67 citation statements)

References 25 publications

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“…While this requires typically an additional MIR fiber laser as the pump source, the performance and relative maturity of diode pumped Er:ZBLAN make this an ideal candidate. [105,106] The first demonstration of an in-band pumped Dy system readily achieved a record efficiency for 3 µm class fiber lasers of 51%. [97] Additionally, due to the pumping scheme red-shifting the gain peak, the free running wavelength of 3.04 µm represented the first Dy:ZBLAN fiber laser operating beyond 3 µm.…”

Section: Cw Dy:zblan Fiber Lasersmentioning

confidence: 99%

Dysprosium Mid‐Infrared Lasers: Current Status and Future Prospects

Woodward

Majewski

Jackson

2020

Laser & Photonics Reviews

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With growing interest in the mid‐infrared spectral region, dysprosium has recently been revisited for efficient high‐performance infrared source development. Despite historically receiving less attention than other rare earth ions, in recent years lasers utilizing the dysprosium ion as the laser material have set record mid‐infrared performance, including tunability from 2.8 to 3:4 µm (in addition to 4:3 µm lasing), continuous wave powers exceeding 10 W, greater than 73% slope efficiencies, and even ultrafast pulsed operation. Herein, the unique energy level structure and spectroscopy of the dysprosium ion are examined and the major developments that have led to this resurgence of interest and subsequent record mid‐infrared laser performance are surveyed. Also mid‐infrared applications of emerging dysprosium lasers are highlighted, in addition to surveying the many opportunities that lie ahead.

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Section: Cw Dy:zblan Fiber Lasersmentioning

confidence: 99%

Dysprosium Mid‐Infrared Lasers: Current Status and Future Prospects

Woodward

Majewski

Jackson

2020

Laser & Photonics Reviews

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“…However, recent works have demonstrated that end-capping ZBLAN fiber with more a robust fluoride glass (e.g. AlF 3 ) can significantly improve the power-handling [15]. Thus we believe that our FSF laser design could support even higher pulse energies with appropriate fiber processing, which is a topic of ongoing work.…”

mentioning

confidence: 92%

Ultrafast mid-infrared fiber laser mode-locked using frequency-shifted feedback

2019

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We demonstrate ultrashort pulse generation from a fluoride fiber laser co-doped with holmium and praseodymium. To date the majority of work focused on short pulse generation from this class of fiber laser has employed loss modulators in the cavity, both real and artificial. In this work we alternatively employ a frequency shifting element: an acousto-optic modulator (AOM) in the cavity. This results in mode-locked output of sub-5 ps pulses with 10 nJ of energy at a center wavelength of 2.86 µm, and a pulse repetition frequency of 30.1 MHz, equating to a peak power of 1.9 kW. Additional experimental investigation of the relationship between frequency shift and cavity round trip offer insight into the complex underlying dynamics. As a complementary mode-locking technique to conventional loss modulation, this method of pulseformation may greatly expand the design flexibility of pulsed mid-infrared fiber lasers.

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“…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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Towards power scaling of 28 μm fiber lasers

Cited by 188 publications

References 25 publications

Dysprosium Mid‐Infrared Lasers: Current Status and Future Prospects

Dysprosium Mid‐Infrared Lasers: Current Status and Future Prospects

Ultrafast mid-infrared fiber laser mode-locked using frequency-shifted feedback

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

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Towards power scaling of 28 μm fiber lasers

Cited by 188 publications

References 25 publications

Dysprosium Mid‐Infrared Lasers: Current Status and Future Prospects

Dysprosium Mid‐Infrared Lasers: Current Status and Future Prospects

Ultrafast mid-infrared fiber laser mode-locked using frequency-shifted feedback

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

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