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 journal › Article › peer-review

72 Citations (Scopus)
156 Downloads (Pure)

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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    This paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/oe/abstract.cfm?uri=oe-21-19-22742. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.

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