Explanipedia

2025 photonics for agrifood roadmap: towards a sustainable and healthier planet Open

Lien Smeesters, Francesca Venturini, Stefan Paulus, Anne‐Katrin Mahlein, David Perpetuini , et al. · 2025

Photonics technologies play a crucial role in driving technological advancements within the agrifood industry, aiming to deliver a sustainable food and agriculture, and offering healthy, nutritious and safe food for all of us. Particularly…

In-situ analysis of methane plasmas with mid-infrared supercontinuum-based Fourier-transform spectroscopy Open

Roderik Krebbers, Ningwu Liu, Wessel Averink, Frans J. M. Harren, Tom Butterworth , et al. · 2024

Ultra-broadband spectroscopy using a 2–11.5 µm IDFG-based supercontinuum source Open

Roderik Krebbers, Kees van Kempen, Frans J. M. Harren, Sergey Vasilyev, Ida F. Peterse , et al. · 2024

Supercontinuum sources based on intrapulse difference frequency generation (IDFG) from mode-locked lasers open new opportunities in mid-infrared gas spectroscopy. These sources provide high power and ultra-broadband spectral coverage in th…

Ultra-broadband spectroscopy using a 2–11.5 μm IDFG-based supercontinuum source Open

Roderik Krebbers, Kees van Kempen, Frans J. M. Harren, Sergey Vasilyev, Ida F. Peterse , et al. · 2024

Supercontinuum sources based on intrapulse difference frequency generation (IDFG) from mode-locked lasers open new opportunities in mid-infrared gas spectroscopy. These sources provide high power and ultra-broadband spectral coverage in th…

Ultra-broadband spectroscopy using a 2–11.5 μm IDFG-based supercontinuum source Open

Roderik Krebbers, Kees van Kempen, Frans J. M. Harren, Sergey Vasilyev, Ida F. Peterse , et al. · 2024

Supercontinuum sources based on intrapulse difference frequency generation (IDFG) from mode-locked lasers open new opportunities in mid-infrared gas spectroscopy. These sources provide high power and ultra-broadband spectral coverage in th…

Mid-infrared supercontinuum-based Fourier transform spectroscopy for plasma analysis Open

Roderik Krebbers, N. Liu, Khalil Eslami Jahromi, Mohammadreza Nematollahi, Ole Bang , et al. · 2022

Mid-infrared Supercontinuum-based Fourier Transform Spectroscopy for plasma analysis Open

R. Krebbers, N. Liu, K. E. Jahromi, M. Nematollahi, Ole Bang , et al. · 2022

Broadband mid-infrared (MIR) spectroscopy is a well-established and valuable diagnostic technique for reactive plasmas. Plasmas are complex systems and consist of numerous (reactive) types of molecules; it is challenging to measure and con…

Non-Invasive Monitoring of Inflammation in Inflammatory Bowel Disease Patients during Prolonged Exercise via Exhaled Breath Volatile Organic Compounds Open

Ben Henderson, Joris Meurs, Carlijn R. Lamers, Guilherme Lopes Batista, Dušan Materić , et al. · 2022

The aim of this study was to investigate volatile organic compounds (VOCs) in exhaled breath as possible non-invasive markers to monitor the inflammatory response in inflammatory bowel disease (IBD) patients as a result of repeated and pro…

Mid-infrared Broadband Spectroscopy for Plasma Analysis Open

Roderik Krebbers, N. Liu, Khalil Eslami Jahromi, Mohammadreza Nematollahi, Ole Bang , et al. · 2022

We demonstrate the application of a home-built Fourier Transform Spectrometer based on a mid-infrared supercontinuum source for multispecies detection in a plasma reactor. The results show the high capability of the system for plasma analy…

Fourier Transform Spectroscopy based on a Mid-Infrared Supercontinuum Source for Plasma Study Open

Roderik Krebbers, N. Liu, Khalil Eslami Jahromi, Mohammadreza Nematollahi, Frans J. M. Harren , et al. · 2022

We present a home-built Fourier transform spectrometer based on two mid-infrared supercontinuum sources with spectral coverage between 1.4 - 7.5 μm for CH 4 plasma analysis and CO 2 /N 2 plasma product analysis.

The peppermint breath test benchmark for PTR-MS and SIFT-MS Open

Ben Henderson, Gitte Slingers, Michele Pedrotti, Giovanni Pugliese, Michaela Malásková , et al. · 2021

A major challenge for breath research is the lack of standardization in sampling and analysis. To address this, a test that utilizes a standardized intervention and a defined study protocol has been proposed to explore disparities in breat…

Mid-infrared dual-comb absorption and dispersion spectroscopy and temperature measurement in a plasma Open

M. A. Abbas, Frans J. M. Harren, Luuk van Dijk, Roderik Krebbers, Khalil Eslami Jahromi , et al. · 2021

\n Contains fulltext :\n 244834.pdf (Publisher’s version ) (Open Access)\n

Fourier transform spectrometer developed for high repetition rate mid-infrared supercontinuum sources Open

Amir Khodabakhsh, Mohammadreza Nematollahi, Khalil Eslami Jahromi, Roderik Krebbers, M. A. Abbas , et al. · 2021

\n Contains fulltext :\n 240173.pdf (Publisher’s version ) (Open Access)\n

Ultra-broadband infrared gas sensor for pollution detection: the TRIAGE project Open

Bruce Napier, Ole Bang, Christos Markos, Peter M. Moselund, Laurent Huot , et al. · 2021

Air pollution is one of the largest risk factors for disease or premature death globally, yet current portable monitoring technology cannot provide adequate protection at a local community level. Within the TRIAGE project, a smart, compact…

Fourier transform spectrometer based on high-repetition-rate mid-infrared supercontinuum sources for trace gas detection Open

M. A. Abbas, Khalil Eslami Jahromi, Mohammadreza Nematollahi, Roderik Krebbers, N. Liu , et al. · 2021

We present a fast-scanning Fourier transform spectrometer (FTS) in combination with high-repetition-rate mid-infrared supercontinuum sources, covering a wavelength range of 2–10.5 µm. We demonstrate the performance of the spectrometer for …

Exhaled Breath Reflects Prolonged Exercise and Statin Use during a Field Campaign Open

Ben Henderson, Guilherme Lopes Batista, ‪Carlo Bertinetto‬, Joris Meurs, Dušan Materić , et al. · 2021

Volatile organic compounds (VOCs) in exhaled breath provide insights into various metabolic processes and can be used to monitor physiological response to exercise and medication. We integrated and validated in situ a sampling and analysis…

Comment on amt-2021-28 Open

Frans J. M. Harren · 2021

Abstract. We describe the Airborne Mid-Infrared Cavity enhanced Absorption spectrometer (AMICA) designed to measure trace gases in situ on research aircraft using Off-Axis Integrated Cavity Output Spectroscopy (OA-ICOS). A…

Fourier transform and grating-based spectroscopy with a mid-infrared supercontinuum source for trace gas detection in fruit quality monitoring Open

Khalil Eslami Jahromi, Mohammadreza Nematollahi, Roderik Krebbers, M. A. Abbas, Amir Khodabakhsh , et al. · 2021

We present a multi-species trace gas sensor based on a fast, compact home-built Fourier transform spectrometer (FTS) combined with a broadband mid-infrared supercontinuum (SC) source. The spectrometer covers the spectral bandwidth of the S…

Airborne campaign results of a compact 2-4um broadband supercontinuum-based spectrometer system for multi-species atmospheric gas analysis at ppm level Open

L. Balet, Sanghoon Chin, Tobias Herr, Fabian Lütolf, Philippe Renevey , et al. · 2021

\n Contains fulltext :\n 244761.pdf (Publisher’s version ) (Open Access)\n

Fourier Transform Spectroscopy Using Novel Mid-infrared Supercontinuum Sources Open

Amir Khodabakhsh, Mohammadreza Nematollahi, Khalil Eslami Jahromi, Roderik Krebbers, N. Liu , et al. · 2021

We present a Fourier Transform Spectrometer, especially developed for ultra-broadband mid-infrared supercontinuum sources and suitable for multispecies trace gas detection with noise equivalent detection limits in the order of 0.3-10 ppmv …

Broadband Time-Resolved Absorption and Dispersion Spectroscopy of Methane and Ethane in a Plasma Using a Mid-Infrared Dual-Comb Spectrometer Open

M. A. Abbas, Luuk van Dijk, Khalil Eslami Jahromi, Mohammadreza Nematollahi, Frans J. M. Harren , et al. · 2020

Conventional mechanical Fourier Transform Spectrometers (FTS) can simultaneously measure absorption and dispersion spectra of gas-phase samples. However, they usually need very long measurement times to achieve time-resolved spectra with a…

Broadband Time-Resolved Absorption and Dispersion Spectroscopy of Methane and Ethane in A Plasma Using a Mid-Infrared Dual-Comb Spectrometer Open

M. A. Abbas, Luuk van Dijk, Khalil Eslami Jahromi, Mohammadreza Nematollahi, Frans J. M. Harren , et al. · 2020

Conventional mechanical Fourier Transform Spectrometers (FTS) are able to simultaneously measure absorption and dispersion spectra of gas-phase samples. However, they usually need very long measurement times to achieve time-resolved spectr…

Sensitive multi-species trace gas sensor based on a high repetition rate mid-infrared supercontinuum source Open

Khalil Eslami Jahromi, Mohammadreza Nematollahi, Qing Pan, M. A. Abbas, Simona M. Cristescu , et al. · 2020

We present a multi-species trace gas sensor based on a high-repetition-rate mid-infrared supercontinuum source, in combination with a 30 m multipass absorption cell, and a scanning grating spectrometer. The output of the spectrometer is de…

Cell death associated release of volatile organic sulphur compounds with antioxidant properties in chemical-challenged tobacco BY-2 suspension cultured cells Open

Elena T. Iakimova, Zhenya Yordanova, Simona M. Cristescu, Frans J. M. Harren, Ernst J. Woltering · 2020

New coherent sources for mid infrared spectroscopic applications Open

Frans J. M. Harren · 2020

An overview will be given on the new coherent sources that became available and can fulfil the needs for analytical spectroscopy in the mid infrared wavelength region. Recent highly-visible applications will be presented.

Experimental-based comparison between off-axis integrated cavity output spectroscopy and multipass-assisted wavelength modulation spectroscopy at 77 µm Open

Faisal Nadeem, Julien Mandon, Simona M. Cristescu, Amir Khodabakhsh, Frans J. M. Harren · 2019

\n Contains fulltext :\n 208090.pdf (Publisher’s version ) (Open Access)\n

Mid-infrared supercontinuum-based upconversion detection for trace gas sensing Open

Khalil Eslami Jahromi, Qing Pan, Lasse Høgstedt, Søren Friis, Amir Khodabakhsh , et al. · 2019

Recent advancements of mid-infrared (MIR) supercontinuum light sources have opened up new possibilities in laser-based trace gas sensing. While the supercontinuum sources inherently support wide spectral coverage, the detection of broadban…

Mid-infrared dual-comb spectroscopy with absolute frequency calibration using a passive optical reference Open

M. A. Abbas, Amir Khodabakhsh, Qiyun Pan, Julien Mandon, Simona M. Cristescu , et al. · 2019

We demonstrate an absolute-frequency-calibrated mid-infrared dual-comb spectrometer by using a reference absorption cell. The source is based on a singly-resonant OPO containing two MgO:PPLN crystals in a common ring cavity, synchronously …

A Broadband Mid-Infrared Trace Gas Sensor Using Supercontinuum Light Source: Applications for Real-Time Quality Control for Fruit Storage Open

Khalil Eslami Jahromi, Qing Pan, Amir Khodabakhsh, Cor Sikkens, Paul Assman , et al. · 2019

We present a fully integrated and transportable multi-species trace gas sensor based on a mid-infrared (MIR) supercontinuum light source. The high brightness (surpassing synchrotron) and ultra-broad spectral bandwidth (2–4 μm) of this ligh…

Light, Energy and the Environment, 2018: introduction to the joint feature issue Open

Adam J. Fleisher, Peter Bermel, Frans J. M. Harren, Akihiko Kuze, Qihua Xiong · 2019

This joint feature issue of Optics Express and Applied Optics highlights contributions from authors who presented their latest research at the OSA Light, Energy and the Environment Congress, held in Sentosa Island, Singapore from 5 to 8 No…

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