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Homodyne Solid-State Biased Coherent Detection of Ultra-Broadband Terahertz Pulses with Static Electric Fields

We present an innovative implementation of the solid-state-biased coherent detection (SSBCD) technique, which we have recently introduced for the reconstruction of both amplitude and phase of ultra-broadband terahertz pulses. In our previous works, the SSBCD method has been operated via a heterodyne...

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Autores principales: Tomasino, Alessandro, Piccoli, Riccardo, Jestin, Yoann, Le Drogoff, Boris, Chaker, Mohamed, Yurtsever, Aycan, Busacca, Alessandro, Razzari, Luca, Morandotti, Roberto
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7911412/
https://www.ncbi.nlm.nih.gov/pubmed/33499063
http://dx.doi.org/10.3390/nano11020283
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author Tomasino, Alessandro
Piccoli, Riccardo
Jestin, Yoann
Le Drogoff, Boris
Chaker, Mohamed
Yurtsever, Aycan
Busacca, Alessandro
Razzari, Luca
Morandotti, Roberto
author_facet Tomasino, Alessandro
Piccoli, Riccardo
Jestin, Yoann
Le Drogoff, Boris
Chaker, Mohamed
Yurtsever, Aycan
Busacca, Alessandro
Razzari, Luca
Morandotti, Roberto
author_sort Tomasino, Alessandro
collection PubMed
description We present an innovative implementation of the solid-state-biased coherent detection (SSBCD) technique, which we have recently introduced for the reconstruction of both amplitude and phase of ultra-broadband terahertz pulses. In our previous works, the SSBCD method has been operated via a heterodyne scheme, which involves demanding square-wave voltage amplifiers, phase-locked to the THz pulse train, as well as an electronic circuit for the demodulation of the readout signal. Here, we demonstrate that the SSBCD technique can be operated via a very simple homodyne scheme, exploiting plain static bias voltages. We show that the homodyne SSBCD signal turns into a bipolar transient when the static field overcomes the THz field strength, without the requirement of an additional demodulating circuit. Moreover, we introduce a differential configuration, which extends the applicability of the homodyne scheme to higher THz field strengths, also leading a two-fold improvement of the dynamic range compared to the heterodyne counterpart. Finally, we demonstrate that, by reversing the sign of the static voltage, it is possible to directly retrieve the absolute THz pulse polarity. The homodyne configuration makes the SSBCD technique of much easier access, leading to a vast range of field-resolved applications.
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spelling pubmed-79114122021-02-28 Homodyne Solid-State Biased Coherent Detection of Ultra-Broadband Terahertz Pulses with Static Electric Fields Tomasino, Alessandro Piccoli, Riccardo Jestin, Yoann Le Drogoff, Boris Chaker, Mohamed Yurtsever, Aycan Busacca, Alessandro Razzari, Luca Morandotti, Roberto Nanomaterials (Basel) Article We present an innovative implementation of the solid-state-biased coherent detection (SSBCD) technique, which we have recently introduced for the reconstruction of both amplitude and phase of ultra-broadband terahertz pulses. In our previous works, the SSBCD method has been operated via a heterodyne scheme, which involves demanding square-wave voltage amplifiers, phase-locked to the THz pulse train, as well as an electronic circuit for the demodulation of the readout signal. Here, we demonstrate that the SSBCD technique can be operated via a very simple homodyne scheme, exploiting plain static bias voltages. We show that the homodyne SSBCD signal turns into a bipolar transient when the static field overcomes the THz field strength, without the requirement of an additional demodulating circuit. Moreover, we introduce a differential configuration, which extends the applicability of the homodyne scheme to higher THz field strengths, also leading a two-fold improvement of the dynamic range compared to the heterodyne counterpart. Finally, we demonstrate that, by reversing the sign of the static voltage, it is possible to directly retrieve the absolute THz pulse polarity. The homodyne configuration makes the SSBCD technique of much easier access, leading to a vast range of field-resolved applications. MDPI 2021-01-22 /pmc/articles/PMC7911412/ /pubmed/33499063 http://dx.doi.org/10.3390/nano11020283 Text en © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Tomasino, Alessandro
Piccoli, Riccardo
Jestin, Yoann
Le Drogoff, Boris
Chaker, Mohamed
Yurtsever, Aycan
Busacca, Alessandro
Razzari, Luca
Morandotti, Roberto
Homodyne Solid-State Biased Coherent Detection of Ultra-Broadband Terahertz Pulses with Static Electric Fields
title Homodyne Solid-State Biased Coherent Detection of Ultra-Broadband Terahertz Pulses with Static Electric Fields
title_full Homodyne Solid-State Biased Coherent Detection of Ultra-Broadband Terahertz Pulses with Static Electric Fields
title_fullStr Homodyne Solid-State Biased Coherent Detection of Ultra-Broadband Terahertz Pulses with Static Electric Fields
title_full_unstemmed Homodyne Solid-State Biased Coherent Detection of Ultra-Broadband Terahertz Pulses with Static Electric Fields
title_short Homodyne Solid-State Biased Coherent Detection of Ultra-Broadband Terahertz Pulses with Static Electric Fields
title_sort homodyne solid-state biased coherent detection of ultra-broadband terahertz pulses with static electric fields
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7911412/
https://www.ncbi.nlm.nih.gov/pubmed/33499063
http://dx.doi.org/10.3390/nano11020283
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