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Integration of a rapid scanning technique into THz time-domain spectrometers for nonlinear THz spectroscopy measurements
We have implemented a rapid scanning technique into THz time-domain spectrometers using an oscillating frictionless delay line, especially adapted for nonlinear THz experiments. Thereby we were able to increase the dynamic range of THz measurements in the frequency range from 40 to 200 cm(-1) by up...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
AIP Publishing LLC
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6594716/ https://www.ncbi.nlm.nih.gov/pubmed/31249728 http://dx.doi.org/10.1063/1.5080653 |
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author | Hoberg, C. Balzerowski, P. Havenith, M. |
author_facet | Hoberg, C. Balzerowski, P. Havenith, M. |
author_sort | Hoberg, C. |
collection | PubMed |
description | We have implemented a rapid scanning technique into THz time-domain spectrometers using an oscillating frictionless delay line, especially adapted for nonlinear THz experiments. Thereby we were able to increase the dynamic range of THz measurements in the frequency range from 40 to 200 cm(-1) by up to 24 dB and reduce the scanning time by up to a factor of 200. We report here test measurements on TDS-setups at repetition rates of 80 MHz and 5 kHz. The dynamic range exceeds 64 dB, which allows to record even small changes in the THz absorption upon optical excitation by a THz probe, covering the frequency range of the intermolecular modes and the phonon bands. We demonstrate the potential of this technique for optical-pump THz-probe experiments using a 70 μm thick high-resistivity silicon, excited by 400 nm, ∼50 fs pulses as a sample. |
format | Online Article Text |
id | pubmed-6594716 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | AIP Publishing LLC |
record_format | MEDLINE/PubMed |
spelling | pubmed-65947162019-06-27 Integration of a rapid scanning technique into THz time-domain spectrometers for nonlinear THz spectroscopy measurements Hoberg, C. Balzerowski, P. Havenith, M. AIP Adv Regular Articles We have implemented a rapid scanning technique into THz time-domain spectrometers using an oscillating frictionless delay line, especially adapted for nonlinear THz experiments. Thereby we were able to increase the dynamic range of THz measurements in the frequency range from 40 to 200 cm(-1) by up to 24 dB and reduce the scanning time by up to a factor of 200. We report here test measurements on TDS-setups at repetition rates of 80 MHz and 5 kHz. The dynamic range exceeds 64 dB, which allows to record even small changes in the THz absorption upon optical excitation by a THz probe, covering the frequency range of the intermolecular modes and the phonon bands. We demonstrate the potential of this technique for optical-pump THz-probe experiments using a 70 μm thick high-resistivity silicon, excited by 400 nm, ∼50 fs pulses as a sample. AIP Publishing LLC 2019-03-25 /pmc/articles/PMC6594716/ /pubmed/31249728 http://dx.doi.org/10.1063/1.5080653 Text en © 2019 Author(s). 2158-3226/2019/9(3)/035348/5/$0.00 All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Regular Articles Hoberg, C. Balzerowski, P. Havenith, M. Integration of a rapid scanning technique into THz time-domain spectrometers for nonlinear THz spectroscopy measurements |
title | Integration of a rapid scanning technique into THz time-domain spectrometers for nonlinear THz spectroscopy measurements |
title_full | Integration of a rapid scanning technique into THz time-domain spectrometers for nonlinear THz spectroscopy measurements |
title_fullStr | Integration of a rapid scanning technique into THz time-domain spectrometers for nonlinear THz spectroscopy measurements |
title_full_unstemmed | Integration of a rapid scanning technique into THz time-domain spectrometers for nonlinear THz spectroscopy measurements |
title_short | Integration of a rapid scanning technique into THz time-domain spectrometers for nonlinear THz spectroscopy measurements |
title_sort | integration of a rapid scanning technique into thz time-domain spectrometers for nonlinear thz spectroscopy measurements |
topic | Regular Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6594716/ https://www.ncbi.nlm.nih.gov/pubmed/31249728 http://dx.doi.org/10.1063/1.5080653 |
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