Delivery of Nearly Diffraction-Limited Picosecond Laser Pulses in the Air-Filled Anti-Resonant Hollow-Core Fiber at 1 μm Wavelength

Liang, Leben; Guan, Jingzhao; Zhu, Xinyue; Wang, Shaobin; Wu, Dakun; Yu, Fei; Han, Ying

doi:10.3390/photonics10040416

Cited by 2 publications

(1 citation statement)

References 33 publications

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“…Mainly due to the anti-resonance guide light and the inhibition of the coupling effect, this fiber can achieve small loss and large width [6] at the same time because the glass material occupies just a small proportion of the fiber, and the laser propagates in an air core similar to in a free space environment [7]. This fiber has the characteristics of a high damage threshold and extremely low transmission loss [8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Mid-Infrared 2.79 μm Band Er, Cr: Y3Sc2Ga3O12 Laser Transmission Anti-Bending Low-Loss Anti-Resonant Hollow-Core Fiber

Huang,

Wang,

Wang

et al. 2024

Photonics

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A large core size and bending resistance are very important properties of mid-infrared energy transfer fibers, but large core sizes usually lead to the deterioration of bending properties. A negative-curvature nested node-free anti-resonant hollow-core fiber (AR-HCF) based on quartz is proposed. It was made by adding a nested layer to a previous AR-HCF design to provide an additional anti-resonance region while keeping the gap between adjacent tubes strictly correlated with the core diameter to produce a node-free structure. These features improve the fiber’s bending resistance while achieving a larger core diameter. The simulation results show that the radial air–glass anti-resonant layer is increased by the introduction of the nested anti-resonant tube, and the weak interference overlap between the fiber core and the cladding mode is reduced, so the fiber core’s limiting loss and sensitivity to bending are effectively reduced. When the capillary wall thickness t of the fiber is 0.71 μm, the core diameter D is 70 μm, the ratio of the inner diameter of the cladding capillary to the core diameter d/D is 0.62, the diameter of the nested tube is d0 = 29 μm, the fiber has a lower limiting loss at the wavelength of 2.79 μm, and the limiting loss is 3.28 × 10−4 dB/m. At the same time, the optimized structure also has good bending resistance. When the bending radius is 30 mm, the bending loss is only 4.72 × 10−2 dB/m. An anti-bending low-loss micro-structure hollow fiber with a bending radius of less than 30 mm was successfully achieved in the 2.79 μm band. An anti-bending low-loss anti-resonant hollow-core fiber with this structure constitutes a reliable choice for the light guiding system of a 2.79 μm band Er, Cr: YSGG laser therapy instrument.

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Section: Introductionmentioning

confidence: 99%

Mid-Infrared 2.79 μm Band Er, Cr: Y3Sc2Ga3O12 Laser Transmission Anti-Bending Low-Loss Anti-Resonant Hollow-Core Fiber

Huang,

Wang,

Wang

et al. 2024

Photonics

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Delivery of nanosecond laser pulses by multi-mode anti-resonant hollow core fiber at 1 µm wavelength

Zhao,

Yu,

et al. 2024

Opt. Express

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In this paper we explore the application of low-loss multimode anti-resonant hollow-core fiber (MM-AR-HCF) in the delivery of nanosecond laser pulses at 1 µm wavelength. MM-AR-HCF with large core offers a rich content of low-loss higher-order modes which plays a key role in the efficient coupling and transmission of high-power laser of low beam quality. In the experiment, laser pulses of an average pulse energy of 21.8 mJ with 14.6 ns pulse width (corresponding a peak power of 1.49 MW) are transmitted through MM-AR-HCF of 9.8 m length without damage. 85% transmission efficiency is achieved where the incident laser beam suffers a low beam quality with M2x and M2y of 2.18 and 1.99 respectively. Laser-induced damage threshold (LIDT) of MM-AR-HCF was measured to be 22.6 mJ for 85% transmission efficiency, which is 7 times higher than that for a multimode silica optical fiber with a large core of 200 µm.

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Delivery of Nearly Diffraction-Limited Picosecond Laser Pulses in the Air-Filled Anti-Resonant Hollow-Core Fiber at 1 μm Wavelength

Cited by 2 publications

References 33 publications

Mid-Infrared 2.79 μm Band Er, Cr: Y3Sc2Ga3O12 Laser Transmission Anti-Bending Low-Loss Anti-Resonant Hollow-Core Fiber

Mid-Infrared 2.79 μm Band Er, Cr: Y3Sc2Ga3O12 Laser Transmission Anti-Bending Low-Loss Anti-Resonant Hollow-Core Fiber

Delivery of nanosecond laser pulses by multi-mode anti-resonant hollow core fiber at 1 µm wavelength

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