30 W all-fiber supercontinuum generation via graded-index multimode fiber pumped by picoseconds laser pulse

Article Optics

All fiber structured supercontinuum source based on graded-index multimode fiber

Ting Zhang et al.

Summary: This study presents an all fiber spectrally flat supercontinuum source and reveals nonlinear phenomena in the generation of supercontinuum by investigating the evolution of output power.

LASER PHYSICS LETTERS (2022)

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Article Engineering, Electrical & Electronic

130 W continuous-wave supercontinuum generation within a random Raman fiber laser

Xin Cheng et al.

Summary: We have generated a 134 W continuous-wave supercontinuum within a random Raman fiber laser, which is the highest power reported so far. The experiment was conducted using a standard telecom fiber and two different pump sources.

OPTICAL FIBER TECHNOLOGY (2022)

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Article Optics

3D time-domain beam mapping for studying nonlinear dynamics in multimode optical fibers

Y. Leventoux et al.

Summary: The study introduces a new space-time mapping technique for directly detecting the real-time evolution of beam intensity in graded index fibers and observes instant intrapulse nonlinear coupling processes among modes.

OPTICS LETTERS (2021)

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Article Remote Sensing

Design of supercontinuum laser hyperspectral light detection and ranging (LiDAR) (SCLaHS LiDAR)

Guoqing Zhou et al.

Summary: This paper presents an innovative study on the design of airborne-oriented supercontinuum laser hyperspectral (SCLaHS) LiDAR, which is capable of collecting rich spectral data and three-dimensional point cloud data with high spectral and spatial resolution.

INTERNATIONAL JOURNAL OF REMOTE SENSING (2021)

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Article Optics

Design of a novel star type photonic crystal fiber for mid-infrared supercontinuum generation

Md Zahangir Alam et al.

Summary: In this study, two simple photonic crystal fibers (PCFs) designed with highly nonlinear chalcogenide material of Ge11.5As24Se64.5 were investigated for broadband mid-infrared supercontinuum generation. The impact of air hole diameter on both dispersion and nonlinearity parameters of the PCFs was studied. Numerical solutions of generalized nonlinear Schrodinger equation (GNLSE) for secant hyperbolic input pulse at different pumping wavelengths in mid-infrared region were explored by varying input pulse power and fiber lengths, resulting in a 3000 nm wide supercontinuum generation at a pumping wavelength of 2400 nm and input pulse power of 3000W. These designed PCFs can be applied in various fields such as medical imaging, bio-sensing, spectroscopy, wave division multiplexing (WDM) systems, and optical communication systems.

OPTICS COMMUNICATIONS (2021)

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Article Optics

Supercontinuum generation of 314.7 W ranging from 390 to 2400 nm by tapered photonic crystal fiber

Haoyu Zhang et al.

Summary: By pumping a long-tapered photonic crystal fiber with a high-power laser source, a supercontinuum covering all visible wavelengths with an output power exceeding 300 watts was successfully achieved, with spectral flatness within 16 dB. This result indicates a threefold increase in the output power of the supercontinuum covering the visible range.

OPTICS LETTERS (2021)

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Article Multidisciplinary Sciences

Spatio-spectral beam control in multimode diode-pumped Raman fibre lasers via intracavity filtering and Kerr cleaning

Sergey A. Babin et al.

Summary: Multimode fibres provide a promising platform for increasing fibre link capacity and fibre laser output power. The complex spatiotemporal dynamics of multimode beams can be controlled through nonlinear, dispersive, and dissipative effects. Raman nonlinearity induces beam cleanup in long graded-index fibres, offering a breakthrough approach for wavelength-agile high-power lasers within a laser cavity.

SCIENTIFIC REPORTS (2021)

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Article Optics

Shot-noise limited, supercontinuum-based optical coherence tomography

Shreesha D. S. Rao et al.

Summary: This study presents a low-noise supercontinuum source based on an all-normal dispersion (ANDi) fiber, improving contrast, sensitivity, and penetration of SD-OCT images significantly. Through SD-OCT imaging of skin, retina, and multilayer stacks, it is concluded that supercontinuum-based SD-OCT can achieve shot-noise limited detection.

LIGHT-SCIENCE & APPLICATIONS (2021)

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Article Chemistry, Analytical