High energy nanosecond laser pulses delivered single-mode through hollow-core PBG fibers

Shephard, Jonathan D.; Jones, Julian D. C.; Hand, Duncan Paul; Bouwmans, Géraud; Knight, Jonathan C.; Russell, P. St. J.; Mangan, B. J.

doi:10.1364/opex.12.000717

Cited by 141 publications

(78 citation statements)

References 1 publication

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“…However, since the majority of this energy is confined within the air core, no damage or nonlinear effects were observed for the PBGF under these conditions. (Note that these findings are consistent with other reports -see [2] and refs. therein).…”

Section: High Power Resultssupporting

confidence: 94%

Microstructured fibres for high power beam delivery applications

O'Driscoll

Watson

Delmonte

et al. 2005

31st European Conference on Optical Communications (ECOC 2005)

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Abstract:We explore the potential offered by solid and air core microstructured fibres for high power applications and report the use of these fibre types in a pump delivery system for an optical parametric oscillator (OPO). IntroductionFibre delivery of intense laser radiation is important in numerous application areas, from medicine through to industrial processing and aerospace sectors, and offers many practical advantages over free-space solutions. Optical fibres for high power transmission need to offer low values of optical nonlinearity and high damage thresholds. In addition, singlemode operation is often a fundamental requirement for the many applications in which good beam quality is essential.

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Section: High Power Resultssupporting

confidence: 94%

Microstructured fibres for high power beam delivery applications

O'Driscoll

Watson

Delmonte

et al. 2005

31st European Conference on Optical Communications (ECOC 2005)

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“…These include: ultra-low nonlinearity (of interest, for example, for the delivery of high-peak power pulses [11]); close to vacuum light speed propagation (of interest, for example, for low latency data transmission [12]); and a strong resistance to radiation damage [13].…”

Section: Introductionmentioning

confidence: 99%

How to make the propagation time through an optical fiber fully insensitive to temperature variations

Fokoua¹,

Petrovich²,

Bradley³

et al. 2017

Optica

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Propagation time through standard (solid core) optical fibers changes with temperature at a rate of 40 ps/km/K. The thermo-optic effect in silica glass accounts for about 95% of this change and thus hollow core fibers, in which the majority of optical power propagates through an air rather than glass core, can have this sensitivity greatly reduced. To date we have demonstrated a sensitivity as low as 2 ps/km/K, this value being limited by thermallyinduced fiber elongation. In this paper, we predict and experimentally demonstrate that the thermal sensitivity of propagation time can be reduced to zero (or even made negative) in Hollow Core Photonic Bandgap Fibers (HC-PBGF) by compensating the thermally-induced fiber elongation with an equal and opposite thermally-induced group velocity change (i.e. by making the light travel faster through the elongated fiber). This represents the ultimate fiber solution for many propagation time sensitive applications.

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“…Using bandgap HC-PCF, nanosecond [35] pulses with energy of ∼0.37 mJ at 1064 nm were delivered in 2004. For sub-picosecond pulses, the maximum delivered pulse energy was 7 µJ at 1550 nm in 2011 [36] .…”

Section: Introductionmentioning

confidence: 99%

Hollow-core photonic crystal fibre for high power laser beam delivery

Wang

Alharbi

Bradley

et al. 2013

High Pow Laser Sci Eng

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We review the use of hollow-core photonic crystal fibre (HC-PCF) for high power laser beam delivery. A comparison of bandgap HC-PCF with Kagome-lattice HC-PCF on the geometry, guidance mechanism, and optical properties shows that the Kagome-type HC-PCF is an ideal host for high power laser beam transportation because of its large core size, low attenuation, broadband transmission, single-mode guidance, low dispersion and the ultra-low optical overlap between the core-guided modes and the silica core-surround. The power handling capability of Kagome-type HC-PCF is further experimentally demonstrated by millijoule nanosecond laser spark ignition and ∼100 µJ sub-picosecond laser pulse transportation and compression.

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High energy nanosecond laser pulses delivered single-mode through hollow-core PBG fibers

Cited by 141 publications

References 1 publication

Microstructured fibres for high power beam delivery applications

Microstructured fibres for high power beam delivery applications

How to make the propagation time through an optical fiber fully insensitive to temperature variations

Hollow-core photonic crystal fibre for high power laser beam delivery

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