Delivery of high energy Er:YAG pulsed laser light at 294µm through a silica hollow core photonic crystal fibre

Urich, Artur; Maier, Robert R. J.; Mangan, B. J.; Renshaw, Steven; Knight, Jonathan C.; Hand, Duncan Paul; Shephard, Jonathan D.

doi:10.1364/oe.20.006677

Cited by 46 publications

(26 citation statements)

References 21 publications

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“…Note that recent progress on extending low loss transmission to the mid-IR in HCFs also promises new capabilities in the delivery of mid-IR radiation [103]. This is likely to have most impact in the field of medicine, allowing for example the delivery of radiation at 2.94 µm as used in many surgical procedures due to the strong water absorption at this wavelength [117].…”

Section: Laser Beam Deliverymentioning

confidence: 99%

Hollow-core photonic bandgap fibers: technology and applications

2013

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Since the early conceptual and practical demonstrations in the late 1990s, Hollow-Core Photonic Band Gap Fibres (HC-PBGFs) have attracted huge interest by virtue of their promise to deliver a unique range of optical properties that are simply not possible in conventional fibre types. HC-PBGFs have the potential to overcome some of the fundamental limitations of solid fibres promising, for example, reduced transmission loss, lower nonlinearity, higher damage thresholds and lower latency, amongst others. They also provide a unique medium for a range of light: matter interactions of various forms, particularly for gaseous media. In this paper we review the current status of the field, including the latest developments in the understanding of the basic guidance mechanisms in these fibres and the unique properties they can exhibit. We also review the latest advances in terms of fibre fabrication and characterisation, before describing some of the most important applications of the technology, focusing in particular on their use in gas-based fibre optics and in optical communications.

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Section: Laser Beam Deliverymentioning

confidence: 99%

Hollow-core photonic bandgap fibers: technology and applications

2013

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“…the delivery of high power Er:YAG source at ∼3 µm [Uri12]. In addition, hollow core PCFs can have a very low nonlinearity and high damage threshold, and thus, they can be used for pulse compression with high peak intensities since most of the power propagates in the hollow core.…”

Section: Optical Fibresmentioning

confidence: 99%

New materials, regimes and applications of fibre laser techonology

Zhang,

Ferrari,

Obraztsova

et al. 2014

International Photonics and OptoElectronics Meetings

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Nonlinear optics enables the manipulation of spectral and temporal characteristics of optical pulses interacting with a dielectric medium. Optical fibres, as a uniquely practical medium, provide an environment for effectively exploiting the nonlinear effects. This has facilitated the rapid growing interest in this field focused on the investigation of fibrebased sources incorporated with various novel saturable absorber devices for ultrashort pulse generation.This thesis reports a series of experiments exploring the ongoing research in the field of nonlinear optics, including the development of ultrafast mode-locked fibre sources and their applications in supercontinumm generation and third order parametric interactions in new carbon materials.Firstly, the integration of carbon-based materials with rare-earth doped media allows the demonstration of ultrafast mode-locked laser sources operating at wavelengths across the near-infrared region in a compact, low cost and environmentally robust scheme.Power scaling of such sources can be achieved by operating in the all-normal dispersion regime making use of a glass-substrate saturable absorber device that exhibits a higher damage threshold.Supercontinuum generation has been used as an effective method for spectral broadening. Pumping with a conceptually simple and reliable fibre-based system, a continuum covering from 2 to 3 µm is generated in a highly nonlinear GeO 2 fibre. This experiment demonstrates a robust and long-term stable source of radiation in an important band, coincident with a portion of the atmospheric transmission window.Finally, the demonstration of a simple and compact nano-material based dual-wavelength system shows the performance of such devices as a simultaneous saturable absorber and passive synchroniser. An experimental study of coherent frequency mixing at large frequency shifts in a graphene sample, pumped by a two-colour fibre-integrated source, proves the strong nonlinear response of this new carbon material. Woodward who not only provided company inside and outside of the lab, but were also happy to discuss and help all matters of my work and life in UK. In particular, I would like to thank Ed for providing me with much needed support, interesting discussions (especially on food and culture) and continued collaboration since I joined the group. Tim, for making couplers for the Tm-system. Thanks to Tim, Robbie (shared the same office over the past three years!), Ed, and Rob for endless support, spending hours and hours proof reading chapters of this thesis and cheering me up all the time. Thanks to the visitor from A*STAR (Singapore), Dr. Dora Hu (more like a sister), for proof reading and encouraging me to relax during the thesis writing.

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“…Until now, the lowest reported loss in this spectral region was ~1 dB/m [3] in HC-PBGFs operating at wavelengths up to 3.4 µm. Here we report a 19c HC-PBGF achieving an order of magnitude reduction in loss (0.13 dB/m at 3.33 µm) in combination with a wide operating bandwidth, extending from 3.1 to 3.7 µm, and which also exhibits very low bend sensitivity.…”

Section: Introductionmentioning

confidence: 97%

“…Hollow core fibers have several applications in the mid-IR including gas sensing [1], gas lasers [2] and high power laser delivery for medical applications [3]. While soft glass based structures have been favored for transmission in this wavelength region, due to their lower material attenuation compared to more conventional silica beyond 2.5 µm [4], several low loss hollow core silica-based fibers have recently been reported which deliver low loss guidance up to 4 µm (e.g.…”

Section: Introductionmentioning

confidence: 99%

“…While soft glass based structures have been favored for transmission in this wavelength region, due to their lower material attenuation compared to more conventional silica beyond 2.5 µm [4], several low loss hollow core silica-based fibers have recently been reported which deliver low loss guidance up to 4 µm (e.g. [3,5,6]). In particular, Yu et al [5] reported a loss of 34 dB/km at 3.050 µm in combination with a broadband low loss guidance region extending from 2.85 to 3.85 µm.…”

Section: Introductionmentioning

confidence: 99%

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