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Proceedings Paper

Highly efficient light trapping of metallic microstructures induced by femtosecond lasers
Author(s): Jianjun Yang; Yang Yang; Xiaonong Zhu; Hongshui Wang; Chunyong Liang
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Paper Abstract

Microstructuring of NiTi alloy plates by 800 nm femtosecond lasers is investigated through the line-scribing experiment in ambient air. It is found that some distinct surface structures can be generated by varying laser pulse energies and the scan speeds of the samples. Very weak stray light is detected when He-Ne laser beam is directed on the micro-structured targets. The integrated reflectance measurements reveal that the light trapping of these structured metal surfaces can be improved greatly, even up to 90%, within a large spectral range covering the ultraviolet, the visible and the mid-infrared. It is expected that this result could have great potential applications in the designing of efficient energy transfer devices.

Paper Details

Date Published: 18 February 2009
PDF: 8 pages
Proc. SPIE 7276, Photonics and Optoelectronics Meetings (POEM) 2008: Laser Technology and Applications, 72760X (18 February 2009); doi: 10.1117/12.823368
Show Author Affiliations
Jianjun Yang, Nankai Univ. (China)
Yang Yang, Nankai Univ. (China)
Xiaonong Zhu, Nankai Univ. (China)
Hongshui Wang, Hebei Univ. of Technology (China)
Chunyong Liang, Hebei Univ. of Technology (China)


Published in SPIE Proceedings Vol. 7276:
Photonics and Optoelectronics Meetings (POEM) 2008: Laser Technology and Applications
Peixiang Lu; Katsumi Midorikawa; Bernd Wilhelmi, Editor(s)

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