18-10  μm mid-infrared supercontinuum generated in a step-index chalcogenide fiber using low peak pump power

Yu, Yi; Zhang, Bin; Gai, Xin; Zhai, Chengcheng; Qi, Sisheng; Guo, Wei; Yang, Zhiyong; Wang, Rongping; Choi, Duk‐Yong; Madden, Steve; Luther‐Davies, Barry

doi:10.1364/ol.40.001081

Cited by 171 publications

(94 citation statements)

References 24 publications

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“…Beside silicon integrated platforms, promising all-fiber solutions are represented by microstructured chalcogenide optical fibers. Chalcogenide glasses have a wide transparency windows that can go up to 15 µm depending on the glass composition, and a third order nonlinearity a 1000 times that of silica [10]. To offset the strong material dispersion, control of their geometry is however essential to achieve phase matching for efficient FWM.…”

Section: Non Silica Platformmentioning

confidence: 99%

Efficient broadband parametric conversion: Reaching for the Mid IR

Brès

Billat

2016

2016 18th International Conference on Transparent Optical Networks (ICTON)

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In this paper, we report recent results on the efficient generation of SWIR sources exploiting broadband wavelength conversion in silica fibers. Optimized cavity-less designs of fiber parametric amplifiers (FOPA) associated with Thulium amplification capable of high CW powers, wide tunability and modulation will be presented. We also present how parametric conversion can be extended deeper in the Mid-IR by engineering of non-silica mixing platforms.Keywords: Mid-infrared sources, nonlinear optics, wavelength conversion IntroductionThe short-wave infrared (SWIR) and middle-infrared (Mid-IR) are a core bands for molecular detection and identification. Hence, it hosts critical applications ranging from spectroscopy, health monitoring, sensing as well as free space communication [1]. To fully exploit the advantages of such spectral bands, versatile light generation and all optical processing capabilities are key elements. Recent developments in fiber lasers have shown the emergence of medium power tunable continuouswave (CW) thulium-doped fiber lasers [2]. Pulsed operation can be achieved with optical parametric oscillators (OPO) or modelocked thulium-doped fiber lasers. They are widespread solutions despite possibly bulky setups, low repetition rates or limited tunability. Combining different mode of operations is also extremely difficult for a single architecture. An alternative approach to the generation of versatile sources is to rely on broadband wavelength conversion via degenerate four-wave mixing (FWM) [3]. The single pass and parametric nature of the process leads to replication of an initial signal to the targeted spectral band. However the low conversion efficiency of such broadband wavelength conversion limits achievable CW power or requires extremely high pump peak powers [4].Here we will cover some of the recent advances made on versatile SWIR sources based on broadband wavelength conversion in silica fibers. We will first show how such cavity-less design associating telecom-driven parametric conversion and thulium amplification can lead to efficient light generation in the 2 micron spectral band. Various optimized designs capable of providing wide versatility in terms of operating modes will be described. The cavity-less nature, parametric origin and flexibility of the proposed source can offer new opportunities for Mid-IR applications.

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Section: Non Silica Platformmentioning

confidence: 99%

Efficient broadband parametric conversion: Reaching for the Mid IR

Brès

Billat

2016

2016 18th International Conference on Transparent Optical Networks (ICTON)

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“…Recent development of MIR laser sources has enabled us to pump the chalcogenide fibers in the anomalous dispersion region and ultra-broadband SCs have been generated in hybrid step-index chalcogenide fibers. 9), 10) In this paper, we fabricated a new step-index chalcogenide glass fiber with As 2 Se 3 core and As 2 S 5 cladding, which shows a good transparency deep into the MIR. SC generation covering 3 10¯m was demonstrated in this fiber using a 4-cm-long segment.…”

Section: Introductionmentioning

confidence: 99%

Mid-infrared supercontinuum covering 3–10 µm using a As2Se3 core and As2S5 cladding step-index chalcogenide fiber

Deng

Liu

Tuan

et al. 2016

J. Ceram. Soc. Japan

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A high numerical aperture (NA) step-index fiber with As 2 Se 3 core and As 2 S 5 cladding was fabricated for deep mid-infrared (MIR) transmission over 10¯m. MIR supercontinuum generation covering the wavelength from 3 to 10¯m was successfully demonstrated in this fiber using a MIR pulsed laser source with¯J-level energy output around 7¯m. A 4-cm-long fiber sample is sufficient to enable a spectral broadening spreading from 3 to 10¯m in a 20 dB dynamic range.

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“…8, No. 4; the longest wavelength reached was limited owing to cladding absorption of step-index fiber Hudson et al, 2014;Petersen et al, 2014;Moller et al, 2015;Yu et al, 2015) and cut-off of the asymmetric nature of planar waveguide (Lamont et al, 2008;Gai et al, 2012;Yu et al, 2013;Yu et al, 2014;Karim et al, 2015) design. Photonic crystal fiber based design still attracts researcher attention much to employ it for MIR SC generation due to having no cladding absorption in the long wavelength edge and can be fabricated easily (Fatome et al, 2009;Hu et al, 2010;Weiblen et al, 2010;Wei et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation of Mid-Infrared Supercontinuum Generation in GeAsSe Based Chalcogenide Photonic Crystal Fiber Using Low Peak Power

Karim

Rahman²

2016

APR

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We numerically investigate the use of photonic crystal fiber (PCF) through dispersion engineering of its cladding containing air-holes for supercontinuum (SC) generation in the mid-infrared region using low peak power. A 3.6-cm-long PCF made using Ge 11.5 As 24 Se 64.5 chalcogenide (ChG) glass with a hexagonal array of air-holes was optimized for obtaining zero-dispersion wavelength through dispersion tailoring around the pump wavelength of 4 µm. We have performed numerical simulations for such dispersion tailored ChG PCF with the peak power range between 0.25 kW and 2 kW. It was found through rigorous numerical simulations that an ultrabroadband midinfrared SC spectra covering the wavelength range 2-8 µm which is equivalent to 2 octaves could be generated using pump pulses of 320 fs duration at a wavelength of 4 µm with a relatively low peak power of 2 kW by using our proposed ChG PCF design.

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18-10 μm mid-infrared supercontinuum generated in a step-index chalcogenide fiber using low peak pump power

Cited by 171 publications

References 24 publications

Efficient broadband parametric conversion: Reaching for the Mid IR

Efficient broadband parametric conversion: Reaching for the Mid IR

Mid-infrared supercontinuum covering 3–10 µm using a As<sub>2</sub>Se<sub>3</sub> core and As<sub>2</sub>S<sub>5</sub> cladding step-index chalcogenide fiber

Numerical Investigation of Mid-Infrared Supercontinuum Generation in GeAsSe Based Chalcogenide Photonic Crystal Fiber Using Low Peak Power

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18-10 μm mid-infrared supercontinuum generated in a step-index chalcogenide fiber using low peak pump power

Cited by 171 publications

References 24 publications

Efficient broadband parametric conversion: Reaching for the Mid IR

Efficient broadband parametric conversion: Reaching for the Mid IR

Mid-infrared supercontinuum covering 3&ndash;10 &micro;m using a As<sub>2</sub>Se<sub>3</sub> core and As<sub>2</sub>S<sub>5</sub> cladding step-index chalcogenide fiber

Numerical Investigation of Mid-Infrared Supercontinuum Generation in GeAsSe Based Chalcogenide Photonic Crystal Fiber Using Low Peak Power

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Mid-infrared supercontinuum covering 3–10 µm using a As<sub>2</sub>Se<sub>3</sub> core and As<sub>2</sub>S<sub>5</sub> cladding step-index chalcogenide fiber