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Laser material processing with tightly focused cylindrical vector beams

Laser material processing with tightly focused cylindrical vector beams
Laser material processing with tightly focused cylindrical vector beams
We demonstrate a comprehensive modification study of silica glass, crystalline silicon, and amorphous silicon film, irradiated by tightly focused cylindrical vector beams with azimuthal and radial polarizations. The evidence of the longitudinal field associated with radial polarization is revealed by second harmonic generation in z-cut lithium niobate crystal. Despite the lower threshold of ring-shaped modification of silicon materials, the modification in the center of single pulse radially polarized beam is not observed. The phenomenon is interpreted in terms of the enhanced reflection of longitudinal component at the interface with high-index contrast, demonstrating that the longitudinal component is inefficient for the flat surface modification. Enhanced interaction of the longitudinal light field with silicon nanopillar structures produced by the first pulse of double-pulse irradiation is also demonstrated.
0003-6951
1-5
Drevinskas, Rokas
23f858b5-8750-4113-ba11-49cfefc3dbb7
Zhang, Jingyu
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Beresna, Martynas
a6dc062e-93c6-46a5-aeb3-8de332cdec7b
Gecevičius, Mindaugas
271576ee-dd9d-40b3-ab2f-19686b91dc64
Kazanskii, Audrey G.
9db3c8e7-b302-41c6-959b-16a2d6f5e0fc
Svirko, Yuri P.
d64a0366-ef29-4a31-878e-54f7536816ac
Kazansky, Peter G.
a5d123ec-8ea8-408c-8963-4a6d921fd76c
Drevinskas, Rokas
23f858b5-8750-4113-ba11-49cfefc3dbb7
Zhang, Jingyu
de184393-56fd-4f4d-8019-ae76b3f14b54
Beresna, Martynas
a6dc062e-93c6-46a5-aeb3-8de332cdec7b
Gecevičius, Mindaugas
271576ee-dd9d-40b3-ab2f-19686b91dc64
Kazanskii, Audrey G.
9db3c8e7-b302-41c6-959b-16a2d6f5e0fc
Svirko, Yuri P.
d64a0366-ef29-4a31-878e-54f7536816ac
Kazansky, Peter G.
a5d123ec-8ea8-408c-8963-4a6d921fd76c

Drevinskas, Rokas, Zhang, Jingyu, Beresna, Martynas, Gecevičius, Mindaugas, Kazanskii, Audrey G., Svirko, Yuri P. and Kazansky, Peter G. (2016) Laser material processing with tightly focused cylindrical vector beams. Applied Physics Letters, 1-5. (doi:10.1063/1.4953455).

Record type: Article

Abstract

We demonstrate a comprehensive modification study of silica glass, crystalline silicon, and amorphous silicon film, irradiated by tightly focused cylindrical vector beams with azimuthal and radial polarizations. The evidence of the longitudinal field associated with radial polarization is revealed by second harmonic generation in z-cut lithium niobate crystal. Despite the lower threshold of ring-shaped modification of silicon materials, the modification in the center of single pulse radially polarized beam is not observed. The phenomenon is interpreted in terms of the enhanced reflection of longitudinal component at the interface with high-index contrast, demonstrating that the longitudinal component is inefficient for the flat surface modification. Enhanced interaction of the longitudinal light field with silicon nanopillar structures produced by the first pulse of double-pulse irradiation is also demonstrated.

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Submitted date: 27 April 2016
Accepted/In Press date: 21 May 2016
Published date: 3 June 2016
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 396806
URI: http://eprints.soton.ac.uk/id/eprint/396806
ISSN: 0003-6951
PURE UUID: 941cec08-4b5b-45df-8d6d-ea0e347128f3

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Date deposited: 14 Jun 2016 12:59
Last modified: 15 Mar 2024 05:40

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Contributors

Author: Rokas Drevinskas
Author: Jingyu Zhang
Author: Mindaugas Gecevičius
Author: Audrey G. Kazanskii
Author: Yuri P. Svirko

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