Abstract
Three-dimensional (3D) printing technologies have recently been used for the fabrication of custom optical components in the terahertz (THz) range, with benefits related with flexible design, fast prototyping, and preparation of on-demand devices. However, standard 3D printing methods have a limited spatial resolution (∼ 100 μm, typically allowing the fabrication of components with the necessary precision only for frequencies of a few hundred GHz. The advanced 3D printing method based on two-photon polymerization (TPP) can instead give access to nanoscale resolutions (< 100 nm). Here, we employ this technique to fabricate a spiral phase plate (SPP, i.e., a device that can convert a Gaussian beam into a vortex beam with a helical phase) operating at around 1 THz. Using our recently developed scanless THz time-domain imaging (TDI) method, we experimentally retrieve hyperspectral information about both the amplitude and phase of the generated vortex beam, which is found to agree with the results of our numerical simulations.
Original language | English (US) |
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Title of host publication | IRMMW-THz 2023 - 48th Conference on Infrared, Millimeter, and Terahertz Waves |
Publisher | IEEE Computer Society |
ISBN (Electronic) | 9798350336603 |
DOIs | |
State | Published - 2023 |
Event | 48th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2023 - Montreal, Canada Duration: Sep 17 2023 → Sep 22 2023 |
Publication series
Name | International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz |
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ISSN (Print) | 2162-2027 |
ISSN (Electronic) | 2162-2035 |
Conference
Conference | 48th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2023 |
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Country/Territory | Canada |
City | Montreal |
Period | 09/17/23 → 09/22/23 |
Bibliographical note
Publisher Copyright:© 2023 IEEE.
ASJC Scopus subject areas
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering