Journal Article10.1364/JOSAB.8.001652
Picosecond photon echo experiments using a superconducting accelerator-pumped free-electron laser
Y.S. Bai,S. R. Greenfield,Michael D. Fayer,Todd I. Smith,J. C. Frisch,R.L. Swent,H. A. Schwettman +6 more
TL;DR: In this paper, a superconducting accelerator-pumped free-electron laser (SCA/FEL) was used to perform photon echo experiments on a near-IR dye molecule in a polymeric glass.
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Abstract: A superconducting accelerator-pumped free-electron laser (SCA/FEL) is used to perform photon echo experiments on a near-IR dye molecule in a polymeric glass. The SCA/FEL produces Fourier-transform-limited picosecond pulses at a repetition rate of 11.8 MHz. Its wavelength is continuously tunable. The experiments are conducted at 0.776 μm by doubling the output of the SCA/FEL tuned to 1.55 μm. At this wavelength, the SCA/FEL is operated in a burst mode. The duration of the bursts (macropulses) is 2 ms with a repetition rate of 10 Hz. Each individual pulse (micropulse) has a length of 3.2 ps and is approximately 1 μJ in energy. In the experiment a number of single micropulses are selected from each macropulse. The doubling, stabilization, synchronization, single-pulse selection, and detection electronics are described. These are the first photon echo experiments and, to our knowledge, the first optical coherence experiments performed using a free-electron laser as a source.
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Citations
Applications of infrared free-electron lasers: basic research on the dynamics of molecular systems
Dana D. Dlott,Michael D. Fayer +1 more
TL;DR: In this paper, the performance specifications required for a successful application program are discussed, and quantitative experimental considerations that go into deciding whether a particular application is feasible, as well as selected examples of proposed applications.
Ultrafast infrared spectroscopy in biomolecules: Active site dynamics of heme proteins
Jeffrey R. Hill,Dana D. Dlott,Chris W. Rella,Todd I. Smith,H. A. Schwettman,Kristen A. Peterson,A. S. Kwok,Kirk D. Rector,Michael D. Fayer +8 more
TL;DR: In this article, the authors used a free-electron laser (FEL) and an experimental set up at the Stanford University FEL Center to investigate the dynamics of the fundamental vibrational transition of CO bound to the active site of heme proteins.
Infrared free-electron laser applications: Investigations of the dynamics of molecular systems
TL;DR: In this paper, the difficulties of combining an FEL with an intricate experimental apparatus, together with the performance specifications which an FFL must achieve in order to perform sophisticated applications, are discussed.
1
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