Laser precision surface sculpting of 2D diffractive optical structures on metals

Stephanie Giet, Andrew Dunn, Marcus Ardron, M. D. Kidd, Robert Raimund Josef Maier, Nicholas J. Weston, Duncan Paul Hand

Research output: Contribution to conferencePaper

Abstract

A laser surface sculpting technique, which uses a commercial nanosecond UV laser at 355nm to drive a highly localised melting and melt flow process, is demonstrated for the production of reflective 2D diffractive optical structures on martensitic stainless steel and nickel samples. It is shown that this lasertexturing process can be used to generate 10×10μm2 pixels with depths ranging from 150nm to 500nm. Either single or multiple pulses are used to generate each feature via hydrodynamic surface melt deformations, dependent on the dimensions of the features required, material properties, and the laser parameters. To demonstrate the viability of the process for the generation of 2D diffractive structures, it was used to create 2D matrices on mechanically polished stainless steel samples. The diffraction efficiency of these samples is measured and compared with a Fraunhofer diffraction model.

Original languageEnglish
Pages929-934
Number of pages6
Publication statusPublished - 2012
Event31st International Congress on Applications of Lasers and Electro-Optics 2012 - Anaheim Marriott Hotel, Anaheim, CA, United States
Duration: 23 Sep 201227 Sep 2012

Conference

Conference31st International Congress on Applications of Lasers and Electro-Optics 2012
Abbreviated titleICALEO 2012
CountryUnited States
CityAnaheim, CA
Period23/09/1227/09/12

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

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    Giet, S., Dunn, A., Ardron, M., Kidd, M. D., Maier, R. R. J., Weston, N. J., & Hand, D. P. (2012). Laser precision surface sculpting of 2D diffractive optical structures on metals. 929-934. Paper presented at 31st International Congress on Applications of Lasers and Electro-Optics 2012, Anaheim, CA, United States.