Delivery of high energy Er:YAG pulsed laser light at 2.94ím through a silica hollow core photonic crystal fibre

A Urich, R R J Maier, Brian J Mangan, Steven Renshaw, Jonathan C Knight, D P Hand, J D Shephard

Research output: Contribution to journalArticle

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Abstract

In this paper the delivery of high power Er:YAG laser pulses through a silica hollow core photonic crystal fibre is demonstrated. The Er:YAG wavelength of 2.94 ím is well beyond the normal transmittance of bulk silica but the unique hollow core guidance allows silica to guide in this regime. We have demonstrated for the first time the ability to deliver high energy pulses through an all-silica fibre at 2.94 ím. These silica fibres are mechanically and chemically robust, biocompatible and have low sensitivity to bending. A maximum pulse energy of 14 mJ at 2.94 ím was delivered through the fibre. This, to our knowledge, is the first time a silica hollow core photonic crystal fibre has been shown to transmit 2.94 ím laser light at a fluence exceeding the thresholds required for modification (e.g. cutting and drilling) of hard biological tissue. Consequently, laser delivery systems based on these fibres have the potential for the realization of novel, minimally-invasive surgical procedures.
Original languageEnglish
Pages (from-to)6677-6684
Number of pages8
JournalOptics Express
Volume20
Issue number6
DOIs
Publication statusPublished - 2012

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YAG lasers
hollow
pulsed lasers
delivery
photonics
silicon dioxide
fibers
crystals
energy
pulses
drilling
yttrium-aluminum garnet
high power lasers
lasers
transmittance
fluence
thresholds
sensitivity
wavelengths

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Delivery of high energy Er:YAG pulsed laser light at 2.94ím through a silica hollow core photonic crystal fibre. / Urich, A; Maier, R R J; Mangan, Brian J; Renshaw, Steven; Knight, Jonathan C; Hand, D P; Shephard, J D.

In: Optics Express, Vol. 20, No. 6, 2012, p. 6677-6684.

Research output: Contribution to journalArticle

Urich, A ; Maier, R R J ; Mangan, Brian J ; Renshaw, Steven ; Knight, Jonathan C ; Hand, D P ; Shephard, J D. / Delivery of high energy Er:YAG pulsed laser light at 2.94ím through a silica hollow core photonic crystal fibre. In: Optics Express. 2012 ; Vol. 20, No. 6. pp. 6677-6684.
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