Edge effects in chirped-pulse Fourier transform microwave spectra
Abstract
Recent applications of chirped-pulse Fourier transform microwave and millimeter wave spectroscopy have motivated the use of short (10–50 ns) chirped excitation pulses. Here, in this regime, individual transitions within the chirped pulse bandwidth do not all, in effect, experience the same frequency sweep through resonance from far above to far below (or vice versa), and “edge effects” may dominate the relative intensities. We analyze this effect and provide simplifying expressions for the linear fast passage polarization response in the limit of long and short excitation pulses. Lastly, in the long pulse limit, the polarization response converges to a rectangular function of frequency, and in the short pulse limit, the polarization response morphs into a form proportional to the window function of the Fourier-transform-limited excitation pulse.
- Authors:
-
- Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
- Publication Date:
- Research Org.:
- Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences, and Biosciences Division
- OSTI Identifier:
- 1548352
- Alternate Identifier(s):
- OSTI ID: 1246438
- Grant/Contract Number:
- FG02-87ER13671
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Molecular Spectroscopy
- Additional Journal Information:
- Journal Volume: 312; Journal Issue: C; Journal ID: ISSN 0022-2852
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; Chirped-pulse; Microwave spectroscopy; Millimeter waves; Dynamics
Citation Formats
Park, G. Barratt, and Field, Robert W. Edge effects in chirped-pulse Fourier transform microwave spectra. United States: N. p., 2015.
Web. doi:10.1016/j.jms.2015.03.010.
Park, G. Barratt, & Field, Robert W. Edge effects in chirped-pulse Fourier transform microwave spectra. United States. https://doi.org/10.1016/j.jms.2015.03.010
Park, G. Barratt, and Field, Robert W. Fri .
"Edge effects in chirped-pulse Fourier transform microwave spectra". United States. https://doi.org/10.1016/j.jms.2015.03.010. https://www.osti.gov/servlets/purl/1548352.
@article{osti_1548352,
title = {Edge effects in chirped-pulse Fourier transform microwave spectra},
author = {Park, G. Barratt and Field, Robert W.},
abstractNote = {Recent applications of chirped-pulse Fourier transform microwave and millimeter wave spectroscopy have motivated the use of short (10–50 ns) chirped excitation pulses. Here, in this regime, individual transitions within the chirped pulse bandwidth do not all, in effect, experience the same frequency sweep through resonance from far above to far below (or vice versa), and “edge effects” may dominate the relative intensities. We analyze this effect and provide simplifying expressions for the linear fast passage polarization response in the limit of long and short excitation pulses. Lastly, in the long pulse limit, the polarization response converges to a rectangular function of frequency, and in the short pulse limit, the polarization response morphs into a form proportional to the window function of the Fourier-transform-limited excitation pulse.},
doi = {10.1016/j.jms.2015.03.010},
journal = {Journal of Molecular Spectroscopy},
number = C,
volume = 312,
place = {United States},
year = {Fri Mar 27 00:00:00 EDT 2015},
month = {Fri Mar 27 00:00:00 EDT 2015}
}
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- Proceedings of the National Academy of Sciences, Vol. 117, Issue 1
Perspective: The first ten years of broadband chirped pulse Fourier transform microwave spectroscopy
journal, May 2016
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