Picosecond and nanosecond pulse delivery through a hollow-core Negative Curvature Fiber for micro-machining applications

Piotr Jaworski, Fei Yu, Robert R.J. Maier, William J. Wadsworth, Jonathan C. Knight, Jonathan D. Shephard, Duncan P. Hand

Research output: Contribution to journalArticle

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Abstract

We present high average power picosecond and nanosecond pulse delivery at 1030 nm and 1064 nm wavelengths respectively through a novel hollow-core Negative Curvature Fiber (NCF) for high-precision micro-machining applications. Picosecond pulses with an average power above 36 W and energies of 92 μJ, corresponding to a peak power density of 1.5 TWcm-2 have been transmitted through the fiber without introducing any damage to the input and output fiber end-faces. High-energy nanosecond pulses (>1 mJ), which are ideal for micro-machining have been successfully delivered through the NCF with a coupling efficiency of 92%. Picosecond and nanosecond pulse delivery have been demonstrated in fiber-based laser micro-machining of fused silica, aluminum and titanium.
Original languageEnglish
Pages (from-to)22742-22753
Number of pages12
JournalOptics Express
Volume21
Issue number19
Early online date19 Sep 2013
DOIs
Publication statusPublished - 23 Sep 2013

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picosecond pulses
machining
hollow
delivery
curvature
fibers
pulses
radiant flux density
titanium
silicon dioxide
damage
aluminum
energy
output
wavelengths
lasers

Cite this

Picosecond and nanosecond pulse delivery through a hollow-core Negative Curvature Fiber for micro-machining applications. / Jaworski, Piotr; Yu, Fei; Maier, Robert R.J.; Wadsworth, William J.; Knight, Jonathan C.; Shephard, Jonathan D.; Hand, Duncan P.

In: Optics Express, Vol. 21, No. 19, 23.09.2013, p. 22742-22753.

Research output: Contribution to journalArticle

Jaworski, Piotr ; Yu, Fei ; Maier, Robert R.J. ; Wadsworth, William J. ; Knight, Jonathan C. ; Shephard, Jonathan D. ; Hand, Duncan P. / Picosecond and nanosecond pulse delivery through a hollow-core Negative Curvature Fiber for micro-machining applications. In: Optics Express. 2013 ; Vol. 21, No. 19. pp. 22742-22753.
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