Extracting the phase of high-order harmonic emission from a molecule using transient alignment in mixed samples
Journal Article
·
· Physical Review. A
- Department of Physics and JILA, University of Colorado, Boulder, Colorado 80309-0440 (United States)
- SEMATECH, 255 Fuller Road, Albany, New York 12203 (United States)
We report measurements of both the phase and intensity of high-order harmonic emission from aligned CO{sub 2} molecules, using a mixture of a molecular and an atomic gas. The molecules are transiently aligned using an ultrashort pulse, and a subsequent stronger pulse is used to generate high-order harmonics from a mixed Kr/CO{sub 2} sample. The high-order harmonic emission from the molecules interferes with the reference emission from the atoms. By monitoring the change in harmonic emission as a function of gas mixture and molecular alignment, we can retrieve the orientational dipole that has general features consistent with a two-center emission model.
- OSTI ID:
- 21140600
- Journal Information:
- Physical Review. A, Journal Name: Physical Review. A Journal Issue: 6 Vol. 76; ISSN 1050-2947; ISSN PLRAAN
- Country of Publication:
- United States
- Language:
- English
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