University of Illinois Urbana-Champaign

PROBING BUFFER-GAS COOLED MOLECULES WITH DIRECT FREQUENCY COMB SPECTROSCOPY IN THE MID-INFRRARED

Spaun, Ben

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326263.pptx
889.pdf

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https://hdl.handle.net/2142/79458

Description

Title
PROBING BUFFER-GAS COOLED MOLECULES WITH DIRECT FREQUENCY COMB SPECTROSCOPY IN THE MID-INFRRARED
Author(s)
Spaun, Ben
Contributor(s)
  • Ye, Jun
  • Doyle, John M.
  • Patterson, David
  • Heckl, Oliver H.
  • Bjork, Bryce J.
  • Changala, Bryan
Issue Date
24-Jun-15
Keyword(s)
Mini-symposium: High-Precision Spectroscopy
Date of Ingest
2016-01-05T20:04:50Z
Abstract
We present the first demonstration of cavity-enhanced direct frequency comb spectroscopyfootnote{A. Foltynowicz emph{et al}. Cavity-enhanced optical frequency comb spectroscopy in the mid-infrared application to trace detection of hydrogen peroxide. Applied Physics B, vol. 110, pp. 163�175, 2013.} on buffer-gas cooled moleculesfootnote{D. Patterson and J. M. Doyle. Cooling molecules in a cell for FTMW spectroscopy. Molecular Physics 110, 1757�1766, 2012.}. By coupling a mid-infrared frequency comb to a high-finesse cavity surrounding a helium buffer-gas chamber, we can gather rotationally resolved absorption spectra with high sensitivity over a broad wavelength region. The measured $sim$10 K rotational and translational temperatures of buffer-gas cooled molecules drastically simplify the observed spectra, compared to those of room temperature molecules, and allow for high spectral resolution limited only by Doppler broadening (10-100 MHz). Our system allows for the extension of high-resolution spectroscopy to larger molecules, enabling detailed analysis of molecular structure and dynamics, while taking full advantage of the powerful optical properties of frequency combs.
Publisher
International Symposium on Molecular Spectroscopy
Type of Resource
text
Genre of Resource
Conference Paper / Presentation
Language
English
Permalink
http://hdl.handle.net/2142/79458

Owning Collections

Abstracts & Presentations - 2015 International Symposium on Molecular Spectroscopy PRIMARY