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Shim, Sang-Hee
Shim Research Lab
Research Interests
  • Super-resolution Optical Imaging
  • Single-molecule Biophysics
  • Ultrastructural Dynamics
  • Single-cell Systems Biology

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Controlling vibrational excitation with shaped mid-IR pulses

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Title
Controlling vibrational excitation with shaped mid-IR pulses
Author
Strasfeld, David B.Shim, Sang-HeeZanni, Martin T.
Keywords
DYNAMICS; SPECTROSCOPY; PHASE; RELAXATION; SCATTERING; MOLECULES
Issue Date
2007-07
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW LETTERS, v.99, no.3, pp.1 - 4
Abstract
We report selective population of the excited vibrational levels of the T1u CO-stretching mode in W(CO)6 using phase-tailored, femtosecond mid-IR (5.2μm, 1923cm-1) pulses. An evolutionary algorithm was used to optimize specific vibrational populations. Stimulated emission peaks, indicative of population inversion, could be induced. Systematic truncation of each optimized pulse allowed for increased understanding of the excitation mechanism. The pulses and techniques developed herein will have broad applications in controlling ground state chemistry and enhancing vibrational spectroscopies.
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DOI
10.1103/PhysRevLett.99.038102
ISSN
0031-9007
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BME_Journal Papers
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