Toward High-Power All-Fiber 2–5 μm Supercontinuum Generation in Chalcogenide Step-Index Fiber

Yin, Ke; Zhang, Bin; Yao, Jinmei; Cai, Zhen; Liu, Guangchen; Hou, Jing

doi:10.1109/jlt.2017.2749268

Cited by 16 publications

(7 citation statements)

References 27 publications

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“…The nonlinear processes known for generating SC spectrum are self‐phase modulation (SPM), four‐wave mixing, modulation instability, stimulated Raman scattering, cross‐phase modulation, and soliton dynamics . At a lower pump power, SPM plays a major role in the pumping process . The interaction between the frequency chirp and normal dispersion broadened the blue shift and red shift, forming a symmetrical sidelobe structure.…”

Section: Resultsmentioning

confidence: 99%

“…38,39 At a lower pump power, SPM plays a major role in the pumping process. 40,41 The interaction between the frequency chirp and normal dispersion broadened the blue shift and red shift, forming a symmetrical sidelobe structure. With increasing pump power, the asymmetric spectrum broadening was caused by impurity absorption and intrinsic absorption of materials.…”

Section: Resultsmentioning

confidence: 99%

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1.8–13 μm supercontinuum generation by pumping at normal dispersion regime of As–Se–Te glass fiber

Yang

et al. 2019

J Am Ceram Soc

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Mid‐infrared (MIR) band supercontinuum (SC) light source has highly important application prospects in aerospace, biomedicine, MIR sensing, and pollutant monitoring. As–Se–Te glass has high nonlinear refractive index, wide MIR transmission range and weak crystallization ability. As40Se40Te20 glass fiber is suitable for producing wide MIR–SC spectrum. In this study, purified As40Se40Te20 glass was prepared and unclad and step‐index fibers were drawn. An unclad As40Se40Te20 glass fiber with minimum loss of 1.7 dB/m at 8.8 μm was obtained. By pumping the unclad fiber in the normal dispersion region at 5 μm, we recorded the broadest SC generation spectrum, which covered 1.8–13 μm with a 30 dB spectral flatness, from a fiber with 15 cm length. Besides, As40Se40Te20/As40Se42Te18 step‐index fiber with minimum loss of 5.6 dB/m at 5 μm was drawn from isolation extruded preform. The step‐index fiber was pumped in the normal dispersion region at 5 μm, and the SC spectrum, covering 2.1–11.2 μm with a 40 dB spectral flatness, was recorded from a fiber with 15 cm length. The SC spectrum, which was achieved by pumping the As40Se40Te20 fiber, covered almost all the transparent range of material.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

1.8–13 μm supercontinuum generation by pumping at normal dispersion regime of As–Se–Te glass fiber

Yang

et al. 2019

J Am Ceram Soc

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“…Petersen et al [189] experimentally demonstrated an SC spectrum which was extended to 7 µm with an output power of 6.5 mW in an As 38 Se 62 SCF with a 4-µm-core, pumped by an SC source with along wavelength edge of 4.4 µm and power of 51.4 mW, from a 5-m-long ZBLAN fiber with a carefully designed dispersion. Yin et al [194] adopted a thulium-doped fiber amplifier (a 2-2.5 µm SC source with a maximum output power of~1 W) to generate a 2-4.2 µm SC source in a 12-m-long ZBLAN fiber, which was then used as the pump light for an As 2 S 3 step-index fiber. Spectrally flat 2-5 µm SC generation with a high power of 57.6 mW was eventually realized.…”

Section: Toward All-fiber Sc Sources Based On Chg Fibersmentioning

confidence: 99%

A Review of Mid-Infrared Supercontinuum Generation in Chalcogenide Glass Fibers

et al. 2018

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Chalcogenide glasses have the advantages of a wide transparency window (over 20 µm) and high optical nonlinearity (up to a thousand times greater than that of silica glasses), making them good candidates for mid-infrared supercontinuum generation. In this review, we describe both the history and recent developments in mid-infrared supercontinuum generation from chalcogenide fibers according to three kinds of fiber structures: step-index, microstructured and tapered fibers. We also review the coherence properties of mid-infrared supercontinuum generation and all-fiber supercontinuum sources based on chalcogenide fibers.

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“…However, the transmission loss beyond 2.7 μm and the relatively weak nonlinearity of commonly used silica glass tremendously limit the silica fibers reaching the MIR region [12,[19][20][21][22]. Chalcogenide (ChG) fibers have been demonstrated to be promising candidates due to their high intrinsic nonlinearity and low photon energies [14,18,23], and the long-wave transmission edge can be up to about 14 μm when selenidebased materials are used [24][25][26][27]. Compared to standard stepindex fibers, MOFs, or photonic crystal fibers (PCFs), are more attractive because of their ability to adjust the waveguide dispersion so that material dispersion is compensated.…”

Section: Introductionmentioning

confidence: 99%

Broadband Coherent Mid-Infrared Supercontinuum Generation in All-Chalcogenide Microstructured Fiber With All-Normal Dispersion

Xiao

Ye²,

Min³

2022

Front. Phys.

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We demonstrated numerically the generation of broadband, coherent supercontinuum (SC) spectra in the mid-infrared region using dispersion-engineered all-chalcogenide microstructured fibers (MOFs). The 1-cm-long hexagonal fiber can be made with Ge11.5As24S64.5 glass as a low-refractive-index material embedded in a Ge11.5As24Se64.5 glass matrix. By optimizing the structural parameters, we determined a broad and flat all-normal-dispersion characteristic up to 14 μm. A highly coherent broadband SC with an intensity greater than −3 dB in the range from 5973 to 8695 nm is obtained when the fiber is pumped by a 7 μm laser with pulse duration of 50 fs and peak power of 6 kW. Flat-top SC of −30 dB level can be observed utilizing identical pump pulse parameters, covering wavelengths from 3823 to 13577 nm (>1.5 octaves). This broadband coherent MIR SC source can be applied in frequency metrology, optical coherence tomography, biomedical imaging, and few-cycle pulse compression.

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Toward High-Power All-Fiber 2–5 μm Supercontinuum Generation in Chalcogenide Step-Index Fiber

Cited by 16 publications

References 27 publications

1.8–13 μm supercontinuum generation by pumping at normal dispersion regime of As–Se–Te glass fiber

1.8–13 μm supercontinuum generation by pumping at normal dispersion regime of As–Se–Te glass fiber

A Review of Mid-Infrared Supercontinuum Generation in Chalcogenide Glass Fibers

Broadband Coherent Mid-Infrared Supercontinuum Generation in All-Chalcogenide Microstructured Fiber With All-Normal Dispersion

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