Compact 3–8  μm supercontinuum generation in a low-loss As_2Se_3 step-index fiber

Robichaud, Louis-Rafaël; Fortin, Vincent; Gauthier, Janel; Châtigny, Stéphane; Couillard, Jean-François; Delarosbil, Jean-Luc; Vallée, Réal; Bernier, Martin

doi:10.1364/ol.41.004605

Cited by 58 publications

(24 citation statements)

References 18 publications

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“…In addition to their transmission, step-index InF 3 fibers exhibit favorable dispersion properties for SC generation when pumped within the Tm gain window, around 2 μm. Finally, for the scheme where fluoride fibers are concatenated with ChG fibers for further infrared extension of the SC [20][21][22], the use of InF 3 fiber instead of ZBLAN can lead to further extension of the MIR SC [30].…”

Section: Resultsmentioning

confidence: 99%

“…Demonstrations in ChG fibers yielded broader MIR supercontinuum; however, given that their zerodispersion wavelength is usually above 4.5 μm, direct pumping with standard fiber lasers operating at wavelengths below 3 μm is not optimum. Extending SC beyond 4.5 μm in fluoride fibers is also important so as to be able to pump step-index ChG fibers and to further extend the SC through nonlinear propagation in cascaded fibers [20][21][22].…”

Section: Introductionmentioning

confidence: 99%

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Watt-level and spectrally flat mid-infrared supercontinuum in fluoroindate fibers

Théberge

Bérubé

Poulain³

et al. 2018

Photon. Res.

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We report on infrared supercontinuum (SC) generation in step-index fluoroindate-based fiber by using an all-fiber laser source. In comparison to widely used ZBLAN fibers for high-power mid-infrared (MIR) SC generation, fluoroindate fibers have multiphoton absorption edges at significantly longer wavelengths and can sustain similar intensities. Recent developments highlighted in the present study allowed the production of fluoroindate fibers with MIR background loss of 2 dB/km, which is similar to or even better than ZBLAN fibers. By using an all-fiber picosecond laser source based on an erbium amplifier followed by a thulium power amplifier, we demonstrate the generation of 1.0 W infrared SC spanning over 2.25 octaves from 1 μm to 5 μm. The generated MIR SC also exhibits high spectral flatness with a 6 dB spectral bandwidth from 1.91 μm to 4.77 μm and an average power two orders of magnitude greater than in previous demonstrations with a similar spectral distribution.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Watt-level and spectrally flat mid-infrared supercontinuum in fluoroindate fibers

Théberge

Bérubé

Poulain³

et al. 2018

Photon. Res.

Self Cite

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“…However, most of these mid-IR SC sources have been demonstrated using bulky mid-IR pump sources such as optical parametric oscillators (OPO) and amplifiers (OPA). Mid-IR fiber lasers and cascaded fiber systems have recently emerged as attractive and promising solutions for practical and commercial applications [25][26][27][28][29][30][31][32][33][34][35]. These fiber lasers-based systems indeed open routes to practical, table-top and robust mid-IR supercontinuum sources with high spectral power density.…”

Section: Introductionmentioning

confidence: 99%

Cascaded Fiber-based Mid-Infrared Supercontinuum Source

Sylvestre¹

2020

Preprint

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Mid-infrared supercontinuum (SC) sources in the 2 to 20 µm molecular fingerprint region are in high demand for a wide range of applications including optical coherence tomography, remote sensing, molecular spectroscopy, and hyperspectral imaging. In this work, we investigate mid-IR SC generation in a cascaded silica-ZBLAN-chalcogenide fiber system directly pumped with a commercially-available 460-ps pulsed fiber laser operating in the telecommunications window at 1.55 µm. This fiber-based system is shown to generate a flat broadband mid-IR SC covering the entire range from 2 to 10 µm with several tens of mW of output power. This technique paves the way for low cost, practical, and robust broadband SC sources in the mid-IR without the requirement of mid-infrared pump sources or Thulium-doped fiber amplifiers. We also describe a fully-realistic numerical model used to simulate the nonlinear pulse propagation through the cascaded fiber system and use our numerical results to discuss the physical processes underlying the spectral broadening in the cascaded system. We conclude with recommendations to optimize the current cascaded systems based on the simulation results.

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“…Being regions of water absorption and molecular fingerprints, laser sources at~2.7-µm are useful for biomedical therapy [1,2] and atmospheric sensing [3]. In addition, these lasers are utilized for generating 3-5-µm laser emission [4,5], which corresponds to an atmosphere transparent window. Lasers at~2.7-µm also facilitate studies of laser materials that is suitable to generate deep-infrared lasing [6,7].…”

Section: Introductionmentioning

confidence: 99%

Short-Pulse-Width Repetitively Q-Switched ~2.7-μm Er:Y2O3 Ceramic Laser

et al. 2017

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Abstract:A short-pulse-width repetitively Q-switched 2.7-µm Er:Y 2 O 3 ceramic laser is demonstrated using a specially designed mechanical switch, a metal plate carved with slits of both slit-width and duty-cycle optimized. With a 20% transmission output coupler, stable pulse trains with durations (full-width at half-maximum, FWHM) of 27-38 ns were generated with a repetition rate within the range of 0.26-4 kHz. The peak power at a 0.26 kHz repetition rate was~3 kW.

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Compact 3–8 μm supercontinuum generation in a low-loss As_2Se_3 step-index fiber

Cited by 58 publications

References 18 publications

Watt-level and spectrally flat mid-infrared supercontinuum in fluoroindate fibers

Watt-level and spectrally flat mid-infrared supercontinuum in fluoroindate fibers

Cascaded Fiber-based Mid-Infrared Supercontinuum Source

Short-Pulse-Width Repetitively Q-Switched ~2.7-μm Er:Y2O3 Ceramic Laser

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