Mid-Infrared Single-Mode Ge-As-S Fiber for High Power Laser Delivery

Liang, Xiaolin; Zhong, Minlin; Xu, Tiesong; Xiao, Jing; Jiao, Kai; XianGe, Wang; Yan, Bin; Liu, Jia; Wang, Xunsi; Zhao, Zheming; Bai, Shengchuang; Li, Sensen; Du, Dongping; He, Yaojie; Nie, Qiuhua; Wang, Rongping

doi:10.1109/jlt.2021.3130182

Cited by 14 publications

(5 citation statements)

References 27 publications

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“…2 )/N (8) where ϕ o (u) is the original wavefront, ϕ(u) is the recovery wavefront, and N is the total number of sampling points.…”

Section: Evaluation Methods Of Wavefront Reconstruction Accuracymentioning

confidence: 99%

“…In order to overcome the interference of atmospheric turbulence, large ground-based astronomical telescopes have been equipped with adaptive optical systems in astronomical imaging observations [5,6]. When the laser is transmitted in the atmosphere, it may be affected by turbulence disturbance, molecular absorption, etc., which makes it difficult for the measurement system to accurately obtain the beam parameters at the exit of the laser system [7,8]. Therefore, the analysis of the wavefront after the influence of turbulence helps us to obtain more realistic optical system parameters.…”

Section: Introductionmentioning

confidence: 99%

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Simulation Analysis of an Atmospheric Turbulence Wavefront Measurement System

Wang,

Qin,

et al. 2024

Photonics

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In this paper, a turbulent wavefront measurement model based on the Hartmann system structure is proposed. The maximum recognizable mode number of different lens units is discussed, and the influence of different lens array arrangements on the accuracy of turbulent wavefront reconstruction is analyzed. The results indicate that the increase in the aberration order of the turbulent wavefront has a certain influence on the reconstruction ability of the system. Different lens arrangements and number of lens units will lead to the effective reconstruction of different final mode orders. When using a 5 × 5 lens array arrangement and a hexagonal arrangement of 19 lenses, the maximum order of turbulent wavefront aberrations allowing for effective reconstruction was 25. When the sparse arrangement of 25 lenses or the sparse arrangement of 31 lenses was used, the maximum order allowing for effective reconstruction was 36. If the aberration composition of the turbulent wavefront contained higher-order aberrations, the system could not accurately measure the turbulent wavefront. When the order of the aberrations of the turbulent wavefront was low, the turbulent wavefront could be measured by the lens arrangement with fewer lens units, and the wavefront reconstruction accuracy was close to the measurement results obtained when more lens units were used.

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“…2 )/N (8) where ϕ o (u) is the original wavefront, ϕ(u) is the recovery wavefront, and N is the total number of sampling points.…”

Section: Evaluation Methods Of Wavefront Reconstruction Accuracymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Simulation Analysis of an Atmospheric Turbulence Wavefront Measurement System

Wang,

Qin,

et al. 2024

Photonics

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“…Specifically, damage features were observed in the polymer coating after coupling 1.3 W power at the end face of the fiber at 2.5 µm, and the fiber was damaged at a coupling power of 1.1 W (the facet ignited) at 4.1 µm. In 2022, Liang et al [27] fabricated a Ge-As-S single-mode fiber by a double peeling-off extrusion method for the first time. The lowest loss of this Ge-As-S single-mode fiber is 0.41 dB/m.…”

Section: Progress In Laser Delivery Below 5 µM Wavelengthmentioning

confidence: 99%

Progresses of Mid-Infrared Glass Fiber for Laser Power Delivery

Liang,

Jiao,

Wang

et al. 2023

Photonics

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High-power laser delivery in infrared optical fiber has received much attention due to the urgent needs in the fields of national defense security, biomedicine, advanced manufacturing, and so on. In recent decades, there has been extensive research aimed at enhancing the capabilities of infrared laser power delivery through the purification of infrared glass or the optimization of fiber structures. This article provides an overview of common passive mid-infrared (MIR) optical fibers with numerous glasses and fiber structures, as well as their characteristics in laser power delivery. This review also highlights potential research directions and analyzes the challenges of passive mid-infrared fibers in the current applications.

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“…The wide transmission window, good thermal and chemical stability of chalcogenide fiber make it the only option available in the whole mid-infrared applications [7][8][9]. With the increasing demand for high-power lasers in the midinfrared, the disadvantages of low glass transition temperature and low power threshold of chalcogenide fibers have been exposed [10], limiting their application in high-power laser delivery in the mid-infrared. It is a wide approach to improve the power transmission capability of chalcogenide fiber by increasing the mode field area (MFA).…”

Section: Introductionmentioning

confidence: 99%

Mid-infrared seven-core chalcogenide fiber with ultra-large mode field area and high beam quality

Wang,

Jiao,

Liang

et al. 2024

J. Phys. D: Appl. Phys.

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A seven-core chalcogenide fiber with an ultra-large mode field for mid-infrared range of 2.5-11 μm is designed and fabricated. Through manipulation of the core radius and pitch in the seven-core configuration, we are engaged in a comprehensive exploration of crosstalk characteristics and the mode field area (MFA). In addition, the relationship between the parameters of seven-core fiber for infrared and the beam quality of the output laser is analyzed for the first time. A theoretical MFA of 8914 μm2 can be calculated with a core radius of 24 μm and the pitch of 50 μm. This impressive MFA is realized through the deployment of an improved drilling technique in the fabrication of a Ge-As-Se seven-core fiber. The fiber has a relatively low loss at the wavelength range of 2.5-11 μm, and the minimum loss is 1.4 dB/m at 8.5 μm. The measured MFA of the fiber at 10.6 μm is 7364 μm2, which is 6.2 times higher than that of traditional stepped single-core fiber, but slightly lower than the theoretical value. The power delivery capability of the fiber has been significantly improved about 2 times compared with that of single-core fiber. The output beam quality factor M2 is calculated as 1.13. In all, the seven-core fiber exhibits substantial potential for high-power laser propagation with high quality and flexibility.

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Mid-Infrared Single-Mode Ge-As-S Fiber for High Power Laser Delivery

Cited by 14 publications

References 27 publications

Simulation Analysis of an Atmospheric Turbulence Wavefront Measurement System

Simulation Analysis of an Atmospheric Turbulence Wavefront Measurement System

Progresses of Mid-Infrared Glass Fiber for Laser Power Delivery

Mid-infrared seven-core chalcogenide fiber with ultra-large mode field area and high beam quality

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