External Field-Controlled Ablation: Magnetic Fields

Jovan Maksimovic; Soon Hock Ng; Tomas Katkus; Bruce C. C. Cowie; Saulius Juodkazis

doi:10.20944/preprints201909.0030.v1

Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Version 1 : Received: 2 September 2019 / Approved: 3 September 2019 / Online: 3 September 2019 (05:24:27 CEST)

Laser ablation of silicon under an external applied magnetic field with different orientations was investigated in respect to the scanning direction and polarisation of the laser beam, by observation of the ablation patterns and debris deposition. Ultra-short ∼230 fs laser pulses of 1030 nm wavelengths were used in the single and multi-pulse irradiation modes. Ablation with an externally applied magnetic B-field (B ≈ 0.1 T) is shown to strongly affect debris formation. The mechanism of surface plasmon polariton (SPP) wave can explain the ablated periodic patterns observed with alignment along the magnetic field lines.

ablation; magnetic field; femtosecond laser fabrication

PHYSICAL SCIENCES, Optics

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External Field-Controlled Ablation: Magnetic Fields

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