Files in this item
Files | Description | Format |
---|---|---|
application/vnd.openxmlformats-officedocument.presentationml.presentation ![]() | Presentation | Microsoft PowerPoint 2007 |
application/pdf ![]() | Abstract |
Description
Title: | NANOPHOTONIC SUPERCONTINUUM-BASED MID-INFRARED DUAL-COMB SPECTROSCOPY |
Author(s): | Schmidt, Dag |
Contributor(s): | Kippenberg, Tobias J.; Thévenaz, Luc ; Brès, Camille-Sophie ; Yang, Fan ; Liu, Junqiu ; Weng, Wenle ; Guo, Hairun ; Hänsel, Wolfgang ; Holzwarth, R. |
Subject(s): | Instrument/Technique Demonstration |
Abstract: | An optically stabilized dual-comb system is used to drive a mid-infrared spectroscopy for parallel gas-phase detection in the functional group region from 2800-3600 cm$^{-1}$. The system comprises two amplified ultra-low noise fiber frequency combs (\textbf{FC-1500-ULN from Menlo Systems}), centered at 1550 nm wavelength, which are spectrally broadened to the mid-IR by two chip-based $\text{Si}_3 \text{N}_4$ waveguides. The probe comb passes through a gas-cell containing CH$_4$ (430 ppm), C$_2$H$_2$ (420~ppm), and N$_2$ as a buffer gas and is eventually superimposed with the reference comb on a photodetector. The dual-comb spectrum below reveals the corresponding absorption features, with sufficient resolution to even resolve isotopologues. The present absorption feature of H$_2$O is due to interaction with water vapour during free-space propagation. \begin{wrapfigure}{i}{0pt} \includegraphics[width = 0.625 \linewidth]{Fig1C.eps} \end{wrapfigure} |
Issue Date: | 2019-06-17 |
Publisher: | International Symposium on Molecular Spectroscopy |
Genre: | Conference Paper / Presentation |
Type: | Text |
Language: | English |
URI: | http://hdl.handle.net/2142/104513 |
DOI: | 10.15278/isms.2019.MJ01 |
Rights Information: | Copyright 2019 Dag Schmidt |
Date Available in IDEALS: | 2019-07-15 2020-01-25 |