Files in this item

FilesDescriptionFormat

application/vnd.openxmlformats-officedocument.presentationml.presentation

application/vnd.openxmlformats-officedocument.presentationml.presentation1510939.pptx (5MB)
PresentationMicrosoft PowerPoint 2007

application/pdf

application/pdf4117.pdf (79kB)
AbstractPDF

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


This item appears in the following Collection(s)

Item Statistics