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  Phase Dependence of Double-Resonance Experiments in Rotational Spectroscopy

Schmitz, D., Shubert, V. A., Patterson, D., Krin, A., & Schnell, M. (2015). Phase Dependence of Double-Resonance Experiments in Rotational Spectroscopy. The Journal of Physical Chemistry Letters, 6(8), 1493-1498. doi:10.1021/acs.jpclett.5b00494.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0026-B062-4 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002A-3E9C-3
Genre: Journal Article

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https://dx.doi.org/10.1021/acs.jpclett.5b00494 (Publisher version)
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 Creators:
Schmitz, David1, 2, 3, Author              
Shubert, V. Alvin1, 2, Author              
Patterson, David4, Author
Krin, Anna1, 2, 3, Author              
Schnell, Melanie1, 2, Author              
Affiliations:
1Structure and Dynamics of Cold and Controlled Molecules, Independent Research Groups, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_1938292              
2Center for Free-Electron Laser Science, Luruper Chaussee 149, D-22761 Hamburg, Germany, ou_persistent22              
3International Max Planck Research School for Ultrafast Imaging & Structural Dynamics (IMPRS-UFAST), Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_2266714              
4Department of Physics, Harvard University, Cambridge, Massachusetts 02138, United States, ou_persistent22              

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Free keywords: microwave spectroscopy; chirped pulse Fourier transform rotational spectroscopy; double-resonance spectroscopy; radio frequency
 Abstract: We here report on double-resonance experiments using broadband chirped pulse Fourier transform microwave spectroscopy that can facilitate spectral assignment and yield information about weak transitions with high resolution and sensitivity. Using the diastereomers menthone and isomenthone, we investigate the dependence of pumping a radio frequency transition on both the amplitude and phase of the signal from a microwave transition with which it shares a common rotational level. We observe a strong phase change when scanning the radio frequency through molecular resonance. The direction of the phase change depends on the energy level arrangement, that is, if it is progressive or regressive. The experimental results can be simulated using the three-level optical Bloch equations and described with the AC Stark effect, giving rise to an Autler–Townes splitting.

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Language(s): eng - English
 Dates: 2015-03-092015-04-032015-04-16
 Publication Status: Published in print
 Pages: 6
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1021/acs.jpclett.5b00494
 Degree: -

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Title: The Journal of Physical Chemistry Letters
  Other : J. Phys. Chem. Lett.
  Abbreviation : JPCLett
Source Genre: Journal
 Creator(s):
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Publ. Info: Washington, DC : American Chemical Society
Pages: - Volume / Issue: 6 (8) Sequence Number: - Start / End Page: 1493 - 1498 Identifier: CoNE: /journals/resource/1948-7185