AI Article Synopsis
- A new type of fiber called Negative Curvature Fiber (NCF) allows for the transmission of high average power laser pulses at 1030 nm and 1064 nm wavelengths for micro-machining applications.
- Picosecond pulses achieve over 36 W average power and a peak power density of 1.5 TWcm⁻², all while maintaining the integrity of the fiber ends.
- Nanosecond pulses, with energies exceeding 1 mJ and a 92% coupling efficiency, enable effective micro-machining of materials like fused silica, aluminum, and titanium.
Article 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.
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| http://dx.doi.org/10.1364/OE.21.022742 | DOI Listing |
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