High Average Power Transmission Through Hollow-core Fibers

Palma-Vega, Gonzalo; Beier, Franz; Stutzki, Fabian; Fabian, Simone; Thomas, Sabu; Eberhardt, Ramona; Tünnermann, Andreas

doi:10.1364/assl.2018.ath1a.7

Cited by 11 publications

(9 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For pulsed laser sources, the low nonlinearity and high damage threshold of HCFs have already enabled transmission of peak powers exceeding 10 s MW for ns/ps pulses 66 and GWs for fs pulses 37,67 , which would cause catastrophic damage in an all-solid optical fibre due to self-focusing and dielectric breakdown of the glass 68 . Transmission of more than a kW of average power from a CW laser has also been reported in HCFs, although only over a few m 69 . The ultra-low loss reported here (0.52 dB km −1 at 1064 nm, which could be reduced further following the ideas in Fig.…”

Section: Discussionmentioning

confidence: 99%

Hollow core optical fibres with comparable attenuation to silica fibres between 600 and 1100 nm

et al. 2020

View full text Add to dashboard Cite

For over 50 years, pure or doped silica glass optical fibres have been an unrivalled platform for the transmission of laser light and optical data at wavelengths from the visible to the near infra-red. Rayleigh scattering, arising from frozen-in density fluctuations in the glass, fundamentally limits the minimum attenuation of these fibres and hence restricts their application, especially at shorter wavelengths. Guiding light in hollow (air) core fibres offers a potential way to overcome this insurmountable attenuation limit set by the glass’s scattering, but requires reduction of all the other loss-inducing mechanisms. Here we report hollow core fibres, of nested antiresonant design, with losses comparable or lower than achievable in solid glass fibres around technologically relevant wavelengths of 660, 850, and 1060 nm. Their lower than Rayleigh scattering loss in an air-guiding structure offers the potential for advances in quantum communications, data transmission, and laser power delivery.

show abstract

Section: Discussionmentioning

confidence: 99%

Hollow core optical fibres with comparable attenuation to silica fibres between 600 and 1100 nm

et al. 2020

View full text Add to dashboard Cite

show abstract

“…7b). The tested 1.5-m-length negative-curvature AR-HCF shows a power handling up to 1.2 kW [377]. The experiment of kilowatt level delivery over kilometer-scale has been affirmed by Mulvad et al more recently, and they realized the delivery of 1 kW of near-diffraction-limited CW laser over an unprecedented 1 km distance, with a total throughput efficiency of ~ 80% [381], the experimental setup and results can be found in Fig.…”

Section: Breakthrough Of Microstructure Fibers For High-power Deliverymentioning

confidence: 92%

“…AR-HCF is one of the most popular microstructure fibers according to the emerging results reported recently. High-power pulse delivery employing AR-HCFs has been a well-known topic, it appears that researchers are turning more and more attention to its CW delivery applications [371][372][373][374][375][376][377][378][379][380][381][382][383].…”

Section: Breakthrough Of Microstructure Fibers For High-power Deliverymentioning

confidence: 99%

“…b Experimental results of a Kagome AR-HCF for high average power transmission, the maximum output power could be scaled to 1.2 kW with an overall efficiency of 86%; Reproduced with permission from Ref. [377], Copyright 2018, Optical Society of America. c Experi-mental demonstration of kilometer-scale, kilowatt average power, single-mode laser delivery through a nested AR-HCF; Reproduced with permission from Ref.…”

Section: Breakthrough Of Microstructure Fibers For High-power Deliverymentioning

confidence: 99%

See 1 more Smart Citation

Functional Fibers and Functional Fiber-Based Components for High-Power Lasers

et al. 2022

View full text Add to dashboard Cite

The success of high-power fiber lasers is fueled by maturation of active and passive fibers, combined with the availability of high-power fiber-based components. In this contribution, we first overview the enormous potential of rare-earth doped fibers in spectral coverage and recent developments of key fiber-based components employed in high-power laser systems. Subsequently, the emerging functional active and passive fibers in recent years, which exhibit tremendous advantages in balancing or mitigating parasitic nonlinearities hindering high-power transmission, are outlined from the perspectives of geometric and material engineering. Finally, novel functional applications of conventional fiber-based components for nonlinear suppression or spatial mode selection, and correspondingly, the high-power progress of function fiber-based components in power handling are introduced, which suggest more flexible controllability on high-power laser operations. Graphical abstract

show abstract

“…Previous works have mostly focused on the transmission of high peak power short pulses over AR-HCF, achieving intensities even higher than the damage threshold of silica, but typically over fibres of a few tens of metres at most 28,29 . Experiments on high average power, neardiffraction-limited CW transmission in AR-HCFs have achieved substantial output power levels 30,31 , even exceeding 1 kW 32 . However, the propagation lengths demonstrated in these studies were no longer than a few metres -a power and distance combination also achievable with conventional glass fibres.…”

Section: Power Delivery In Hollow-core Fibrementioning

confidence: 99%

Kilowatt-average-power single-mode laser light transmission over kilometre-scale hollow-core fibre

et al. 2022

View full text Add to dashboard Cite

High power laser delivery with near-diffraction-limited beam quality, widely used in industry for precision manufacturing, is typically limited to tens of metres distances by nonlinearity-induced spectral broadening inside the glass-core delivery fibres. Anti-resonant hollow-core fibres offer not only orders-of-magnitude lower non-linearity, but also loss and modal purity comparable to conventional beam-delivery fibres. Using a single-mode hollow-core nested anti-resonant nodeless fibre (NANF) with 0.74-dB/km loss, we demonstrate delivery of 1 kW of near-diffractionlimited continuous wave laser light over an unprecedented 1-km distance, with a total throughput efficiency of ~80%. From simulations, more than one order of magnitude further improvement in transmitted power or length should be possible in such air-filled fibres, and considerably more if the core is evacuated. This paves the way to multi-kilometre, kW-scale power delivery -not only for future manufacturing and subsurface drilling, but also for new scientific possibilities in sensing, particle acceleration and gravitational wave detection.

show abstract

High Average Power Transmission Through Hollow-core Fibers

Cited by 11 publications

References 5 publications

Hollow core optical fibres with comparable attenuation to silica fibres between 600 and 1100 nm

Hollow core optical fibres with comparable attenuation to silica fibres between 600 and 1100 nm

Functional Fibers and Functional Fiber-Based Components for High-Power Lasers

Kilowatt-average-power single-mode laser light transmission over kilometre-scale hollow-core fibre

Contact Info

Product

Resources

About