High energy green nanosecond and picoseconds pulse delivery through a negative curvature fiber for precision micro-machining

Piotr Jaworski, Fei Yu, Richard M. Carter, Jonathan C. Knight, Jonathan D. Shephard, Duncan P. Hand

Research output: Contribution to journalArticle

42 Citations (Scopus)
95 Downloads (Pure)


In this paper we present an anti-resonant guiding, low-loss Negative Curvature Fiber (NCF) for the efficient delivery of high energy short (ns) and ultrashort (ps) pulsed laser light in the green spectral region. The fabricated NCF has an attenuation of 0.15 dB/m and 0.18 dB/m at 532 nm and 515 nm respectively, and provided robust transmission of nanosecond and picosecond pulses with energies of 0.57 mJ (10.4 kW peak power) and 30 μJ (5 MW peak power) respectively. It provides singlemode, stable (low bend-sensitivity) output and maintains spectral and temporal properties of the source laser beam. The practical application of fiber-delivered pulses has been demonstrated in precision micro-machining and marking of metals and glass.

Original languageEnglish
Pages (from-to)8498-8506
Number of pages9
JournalOptics Express
Issue number7
Publication statusPublished - 6 Apr 2015


Cite this