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Damage analysis of a perfect broadband absorber by a femtosecond laser
- Source :
- Scientific Reports, Vol 9, Iss 1, Pp 1-8 (2019), Scientific Reports
- Publication Year :
- 2019
- Publisher :
- Springer Science and Business Media LLC, 2019.
-
Abstract
- Plasmonic metamaterial absorbers are particularly important in different applications such as photodetectors, microbolometers and solar cells. In this paper, we propose a tungsten boride (WB, a refractory ceramic) based broadband metamaterial absorber whose optical properties is numerically analyzed and experimentally characterized. We have also analyzed the damage characteristics of this absorber using a femtosecond laser and compared with an ordinary Au metamaterial absorber. We observe that WB has almost the double absorption bandwidth with absorption more than 90% over the spectral range of 950 to 1400 nm when compared with the Au counterpart. Furthermore, we show that Au metamaterial is damaged at the power of around 36.4 mW whereas WB metamaterial is not damaged at that power (WB has high Tammann temperature than Au)-however the atom of WB material was knocked off by the bombardment of a femtosecond laser.
- Subjects :
- Materials science
lcsh:Medicine
Physics::Optics
Photodetector
02 engineering and technology
01 natural sciences
Article
law.invention
law
0103 physical sciences
Ceramic
lcsh:Science
010306 general physics
Absorption (electromagnetic radiation)
Plasmon
Multidisciplinary
business.industry
lcsh:R
Metamaterial
021001 nanoscience & nanotechnology
Laser
Metamaterials
visual_art
Femtosecond
visual_art.visual_art_medium
Metamaterial absorber
Optoelectronics
lcsh:Q
0210 nano-technology
business
Subjects
Details
- ISSN :
- 20452322
- Volume :
- 9
- Database :
- OpenAIRE
- Journal :
- Scientific Reports
- Accession number :
- edsair.doi.dedup.....032fcc892c7dc065df2992b2fd0b986f