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  1. No Access

    Chapter and Conference Paper

    Femtosecond X-ray Pulses from a Synchrotron

    An important frontier in ultrafast science is the application of femtosecond x-ray pulses to the study of structural dynamics in condensed matter. We show that femtosecond laser pulses can be used to generate ...

    R. W. Schoenlein, H. H. W. Chong, T. E. Glover, P. A. Heimann… in Ultrafast Phenomena XII (2001)

  2. No Access

    Article

    Generation of femtosecond X-ray pulses via laser–electron beam interaction

    The generation of femtosecond X-ray pulses will have important scientific applications by enabling the direct measurement of atomic motion and structural dynamics in condensed matter on the fundamental time sc...

    R.W. Schoenlein, S. Chattopadhyay, H.H.W. Chong, T.E. Glover… in Applied Physics B (2000)

  3. No Access

    Chapter and Conference Paper

    Generation of “Dark” Femtosecond Synchrotron Pulses from the Advanced Light Source

    Femtosecond optical pulses extract ~100 fs slices of electrons from the electron beam at the ALS. We directly measure the resulting ~500-fs “dark” pulses in the synchrotron radiation from a bend-magnet.

    R. W. Schoenlein, P. Balling, H. H. W. Chong, T. E. Glover… in Ultrafast Phenomena XI (1998)

  4. No Access

    Chapter and Conference Paper

    Temporal Broadening Of Femtosecond High Harmonic Radiation

    Measurement of femtosecond high harmonic radiation indicates that significant pulse shortening can be accomplished by limiting the transverse intensity variation of the generating laser pulse.

    T. E. Glover, A. H. Chin, R. W. Schoenlein, C. V. Shank in Ultrafast Phenomena XI (1998)

  5. No Access

    Chapter and Conference Paper

    Ultrafast Structural Dynamics in InSb Probed by Time-Resolved X-ray Diffraction

    Ultrafast structural dynamics in InSb are studied using time-resolved x-ray diffraction. A delayed onset of significant lattice expansion and an indication of subpicosecond disordering are observed.

    A. H. Chin, R. W. Schoenlein, T. E. Glover, P. Balling… in Ultrafast Phenomena XI (1998)

  6. No Access

    Chapter and Conference Paper

    Ultrafast Dephasing Dynamics and Multi-Level Electronic Structure of InP Nanocrystals

    Femtosecond three-pulse photon echoes and nanosecond hole-burning are used to study dephasing dynamics and electronic level structure in InP nanocrystals. The temperature dependence of the echo decay rate show...

    G. Cerullo, U. Banin, A. A. Guzelian, C. J. Bardeen… in Ultrafast Phenomena X (1996)

  7. No Access

    Chapter and Conference Paper

    Temperature Dependent Electronic Dephasing of Molecules in Polymers Measured by Femtosecond Three Pulse Photon Echoes

    The electronic dephasing of the molecules LD690 and LDS750 is investigated as a function of temperature in the polymers PMMA and PVA.

    C. J. Bardeen, G. Cerullo, C. V. Shank in Ultrafast Phenomena X (1996)

  8. No Access

    Chapter and Conference Paper

    Femtosecond X-Rays Generated via 90° Thomson Scattering

    We have developed a unique source of femtosecond x-rays operating in the 300 fs, 0.4 Å regime[l], which will allow us to apply x-ray techniques with ultrafast time resolution to directly probe the structural d...

    R. W. Schoenlein, W. P. Leemans, A. H. Chin, P. Volfbeyn… in Ultrafast Phenomena X (1996)

  9. No Access

    Chapter and Conference Paper

    Size Dependent Absorption Anisotropy Measurements of CdSe Nanocrystals: Symmetry Assignments for the Lowest Electronic States

    Absorption anisotropy measurements reveal the symmetry of the lowest electronic state in CdSe nanocrystals switches from E to A with decreasing nanocrystal diameter. This size dependence originates from a comp...

    S. J. Rosenthal, A. T. Yeh, A. P. Alivisatos, C. V. Shank in Ultrafast Phenomena X (1996)

  10. No Access

    Chapter and Conference Paper

    Measurement of High Harmonic Pulse Durations Via Laser Assisted X-Ray Photoionization

    Ultrashort x-ray pulses are powerful diagnostic tools, combining the temporal resolution typically reserved for optical (laser) pulses with atomic scale spatial resolution which, in principle, can be achieved ...

    T. E. Glover, R. W. Schoenlein, A. H. Chin, C. V. Shank in Ultrafast Phenomena X (1996)

  11. No Access

    Chapter and Conference Paper

    Selective Excitation of Wavepacket Motion in the Condensed Phase Using Chirped Pulses

    Chirped ultrashort pulses are used to selctively excite coherent wavepacket motion on either the ground or excited electronic states of the molecules LD690 and bacteriorhodopsin in room temperature liquid solu...

    C. J. Bardeen, Q. Wang, C. V. Shank in Ultrafast Phenomena X (1996)

  12. No Access

    Chapter

    Femtosecond Spectroscopy of Retinal Proteins

    Recent advances in the generation of ultrashort light pulses1,2 have made possible the study of chemical and biological reactions with unprecedented time resolution. Two of the most rapid reactions that have been...

    L. A. Peteanu, W. T. Pollard, R. A. Mathies… in Time-Dependent Quantum Molecular Dynamics (1992)

  13. No Access

    Chapter and Conference Paper

    Two-Dimensional Carrier—Carrier Screening Studied with Femtosecond Photon Echoes

    The two dimensional behavior of carrier-carrier screening is studied in a GaAs-GaAlAs quantum well structure with femtosecond photon echoes. The variation of the electron hole dephasing time with carrier densi...

    J.-Y. Bigot, M. T. Portella, R. W. Schoenlein, C. V. Shank… in Ultrafast Phenomena VII (1990)

  14. No Access

    Chapter and Conference Paper

    k-Space Carrier Dynamics in GaAs

    We investigate the scattering dynamics of carriers in k-space for different carrier densities in GaAs, by analyzing the polarization of pump-probe signals produced by 9-femtosecond infrared pulses. The relaxation...

    M. T. Portella, J.-Y. Bigot, R. W. Schoenlein, C. V. Shank… in Ultrafast Phenomena VII (1990)

  15. No Access

    Chapter and Conference Paper

    Generation of Blue-Green 10 fs Pulses Using an Excimer-Pumped Dye Amplifier

    A CPM laser at 620 nm is used to generate 22 fs pulses at 500 nm using an excimer-pumped dye amplifier and continuum generation. The blue-green pulses are compressed to 10 fs using a fiber and grating/prism co...

    R. W. Schoenlein, J.-Y. Bigot, M. T. Portella, C. V. Shank in Ultrafast Phenomena VII (1990)

  16. No Access

    Chapter and Conference Paper

    Imaging with Femtosecond Optical Pulses

    The interaction of short laser pulses with semiconductors has been studied by a variety of techniques including time-resolved reflectivity, [1–5] transmission, ]1–5] photoluminescence, [1–5] surface ellipsomet...

    M. C. Downer, R. L. Fork, C. V. Shank in Ultrafast Phenomena IV (1984)

  17. No Access

    Chapter and Conference Paper

    Procedure for Calculating Optical Pulse Compression from Fiber-Grating Combinations

    An optical pulse can be compressed by a dispersive grating pair after first inducing a frequency chirp in a single-mode optical fiber [1,2]. It is of interest to know how much compression is possible and what ...

    R. H. Stolen, C. V. Shank, W. J. Tomlinson in Ultrafast Phenomena IV (1984)

  18. No Access

    Chapter and Conference Paper

    Femtosecond Spectroscopy of Bacteriorhodopsin Excited State Dynamics

    The dynamics of the photochemistry of bacteriorhodopsin have been investigated extensively.[1] Bacteriorhodopsin is a pigment related to visual rhodopsins which is extracted from the cell membrane of the bacte...

    M. C. Downer, M. Islam, C. V. Shank, A. Harootunian, A. Lewis in Ultrafast Phenomena IV (1984)

  19. No Access

    Chapter and Conference Paper

    Femtosecond Dynamics of Nonequilibrium Correlated Electron-Hole Pair Distributions in Room-Temperature GaAs Multiple Quantum Well Structures

    The GaAs multiple quantum well structure (MQWS) is a new and unique nonlinear optical material [1]. The reduced dimensionality of the electron-hole system in the ultra-thin (100 Å) layers gives rise to clear e...

    W. H. Knox, R. L. Fork, M. C. Downer, D. A. B. Miller… in Ultrafast Phenomena IV (1984)

  20. No Access

    Chapter

    Spectroscopy with Femtosecond Optical Pulses

    This paper reviews the recent advances in femtosecond pulse generation and measurement techniques.

    C. V. Shank in Applications of Picosecond Spectroscopy to Chemistry (1984)

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