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Paraffin Diffractive Lens for Subterahertz Range-Simple and Cost Efficient Solution
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DOI：10.1109/TTHZ.2021.3063809.png)
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摘要
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Novel optical materials and manufacturing methods are especially important in the fast growing terahertz (THz) market, where new solutions for shaping and redirecting of radiation are widely investigated. An innovative method of manufacturing refractive and diffractive optical elements (DOEs) for THz spectral range using commercially available and cost-effective devices and materials is presented. The 3D-printing method is used to produce molds, which are then filled with paraffin. The optical elements obtained with this method outperform many commercial ones, especially in higher frequencies. Moreover, a different diffractive element design (as kinoforms of higher order) is proposed to match the resolution limitations of 3-D printing.
Keyword:
Optical refraction
Optical diffraction
Lenses
Optical variables control
Optical attenuators
Manufacturing
Optical imaging
3-D printing
diffractive optical elements (DOEs)
fast prototyping
high-order kinoforms
paraffin
terahertz (THz) optics
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High order kinoforms as a broadband achromatic diffractive optics for terahertz beams.png)
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