University of Illinois Urbana-Champaign

Nanophotonic supercontinuum-based mid-infrared dual-comb spectroscopy

Schmidt, Dag

Content Files
1510939.pptx
4117.pdf

Permalink

https://hdl.handle.net/2142/104513

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.
Issue Date
2019-06-17
Keyword(s)
Instrument/technique demonstration
Date of Ingest
  • 2019-07-15T22:17:04Z
  • 2020-01-25T19:30:56Z
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}
Publisher
International Symposium on Molecular Spectroscopy
Type of Resource
text
Genre of Resource
Conference Paper / Presentation
Language
eng
Permalink
http://hdl.handle.net/2142/104513
DOI
https://doi.org/10.15278/isms.2019.MJ01
Copyright and License Information
Copyright 2019 Dag Schmidt

Owning Collections

Abstracts & Presentations - 2019 International Symposium on Molecular Spectroscopy PRIMARY