Title
Quasi-Optical LO Coupling Validation for a Planarly Integrated 2 × 2 Pixel Heterodyne Array at 1.95 THz
Author
Berkel, S. L. van (California Institute of Technology)
Maestrini, A. (California Institute of Technology)
Jung-Kubiak, C. (California Institute of Technology)
Bosma, S. (TU Delft Tera-Hertz Sensing) ![ORCID 0000-0001-7143-2714 ORCID 0000-0001-7143-2714](/sites/all/themes/tud_repo3/img/icons/orcid_16x16.png)
Alonso Del Pino, M. (TU Delft Tera-Hertz Sensing) ![ORCID 0000-0001-8315-1047 ORCID 0000-0001-8315-1047](/sites/all/themes/tud_repo3/img/icons/orcid_16x16.png)
Hayton, D. (California Institute of Technology)
Kooi, Jacob (California Institute of Technology)
Siles, J. V. (California Institute of Technology)
Llombart, Nuria (TU Delft Tera-Hertz Sensing) ![ORCID 0000-0002-9540-3552 ORCID 0000-0002-9540-3552](/sites/all/themes/tud_repo3/img/icons/orcid_16x16.png)
Mehdi, I. (California Institute of Technology)
Chattopadhyay, G. (California Institute of Technology)
Date
2023
Abstract
Terahertz heterodyne spectrometer instruments have been traditionally limited to a single pixel or a handful of pixels due to integration and assembly constraints and a limited availability of local oscillator (LO) power. As a solution we propose a novel silicon-micromachined planar and modular packaging strategy, that will allow for a dense integration of a large number of pixels. Moreover, the RF- and LO signals will be quasi-optically coupled via two identical but opposite lens arrays, such that a single LO-source can efficiently pump all HEB-mixers of the 2x2 pixel demonstrator array simultaneously. This work reports on an intermediate step, where we validate the lens array performance and LO power coupling efficiency, by slightly modifying the silicon package into a transmit array configuration. In this way, the LO power coupled into the stack is directly reradiated on the other side, which is then measured using a liquid helium cooled bolometer.
To reference this document use:
http://resolver.tudelft.nl/uuid:4bfae65f-cc23-4998-8950-d8cd13ced13e
DOI
https://doi.org/10.1109/IRMMW-THz57677.2023.10299120
Publisher
IEEE
Embargo date
2024-05-01
ISBN
979-8-3503-3661-0
Source
Proceedings of the 2023 48th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)
Event
2023 48th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), 2023-09-17 → 2023-09-22, Montreal, Canada
Bibliographical note
Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.
Part of collection
Institutional Repository
Document type
conference paper
Rights
© 2023 S. L. van Berkel, A. Maestrini, C. Jung-Kubiak, S. Bosma, M. Alonso Del Pino, D. Hayton, Jacob Kooi, J. V. Siles, Nuria Llombart, I. Mehdi, G. Chattopadhyay