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https://hdl.handle.net/2440/74233
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Type: | Journal article |
Title: | Low-cost ultra-thin broadband terahertz beam-splitter |
Author: | Ung, B. Fumeaux, C. Lin, H. Fischer, B. Ng, B. Abbott, D. |
Citation: | Optics Express, 2012; 20(5):4968-4978 |
Publisher: | Optical Soc Amer |
Issue Date: | 2012 |
ISSN: | 1094-4087 1094-4087 |
Statement of Responsibility: | Benjamin S.-Y. Ung, Christophe Fumeaux, Hungyen Lin, Bernd M. Fischer, Brian W.-H. Ng and Derek Abbott |
Abstract: | A low-cost terahertz beam-splitter is fabricated using ultra-thin LDPE plastic sheeting coated with a conducting silver layer. The beam splitting ratio is determined as a function of the thickness of the silver layer--thus any required splitting ratio can be printed on demand with a suitable rapid prototyping technology. The low-cost aspect is a consequence of the fact that ultra-thin LDPE sheeting is readily obtainable, known more commonly as domestic plastic wrap or cling wrap. The proposed beam-splitter has numerous advantages over float zone silicon wafers commonly used within the terahertz frequency range. These advantages include low-cost, ease of handling, ultra-thin thickness, and any required beam splitting ratio can be readily fabricated. Furthermore, as the beam-splitter is ultra-thin, it presents low loss and does not suffer from Fabry-Pérot effects. Measurements performed on manufactured prototypes with different splitting ratios demonstrate a good agreement with our theoretical model in both P and S polarizations, exhibiting nearly frequency-independent splitting ratios in the terahertz frequency range. |
Keywords: | Equipment Failure Analysis Refractometry Computer-Aided Design Interferometry Terahertz Radiation Equipment Design |
Rights: | © Optical Society of America |
DOI: | 10.1364/OE.20.004968 |
Published version: | http://dx.doi.org/10.1364/oe.20.004968 |
Appears in Collections: | Aurora harvest 4 Electrical and Electronic Engineering publications |
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