Real-time control of polarisation in ultra-short-pulse laser micro-machining

O. J. Allegre; W. Perrie; K. Bauchert; D. Liu; S. P. Edwardson; G. Dearden; K. G. Watkins

doi:10.1007/s00339-012-6761-5

Real-time control of polarisation in ultra-short-pulse laser micro-machining

O. J. Allegre, W. Perrie, K. Bauchert, D. Liu, S. P. Edwardson, G. Dearden, K. G. Watkins

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Abstract

The use of a fast-response, transmissive, ferroelectric liquid-crystal device for real-time control of the polarization direction of a femtosecond laser beam, and the benefits for various aspects of ultra-short pulse micro-machining, are discussed. Several configurations have been used to drive the polarisation in real-time. Our microscopic investigations of the resulting features revealed significant improvements in process efficiency and quality, compared to static linear and circular polarisations. Following our successful micro-machining tests, real-time polarization control could emerge as a powerful tool in laser engineering.

Original language	English
Journal	Applied Physics A
DOIs	https://doi.org/10.1007/s00339-012-6761-5
Publication status	Published - 26 Jan 2012

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AU - Bauchert, K.

AU - Liu, D.

AU - Edwardson, S. P.

AU - Dearden, G.

AU - Watkins, K. G.

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AB - The use of a fast-response, transmissive, ferroelectric liquid-crystal device for real-time control of the polarization direction of a femtosecond laser beam, and the benefits for various aspects of ultra-short pulse micro-machining, are discussed. Several configurations have been used to drive the polarisation in real-time. Our microscopic investigations of the resulting features revealed significant improvements in process efficiency and quality, compared to static linear and circular polarisations. Following our successful micro-machining tests, real-time polarization control could emerge as a powerful tool in laser engineering.

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M3 - Article

SN - 0947-8396

JO - Applied Physics A

JF - Applied Physics A

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Real-time control of polarisation in ultra-short-pulse laser micro-machining

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