P. B. Corkum

Design and Fabrication of Efficient Reflection Grisms for Pulse Compression and Dispersion Compensation

Efficient reflection prisms for pulse compression and material-dispersion compensation have been designed and demonstrated in a CPA system. Designs for 800-nm and 1030-nm ultrafast applications are realized using off-the-shelf diffraction gratings.

Nanoscale Heat Transport Probed with Ultrafast Soft X-Rays

We characterize heat transport in nanostructures using coherent soft x-rays to probe thermally induced surface deformation. By varying the substrate temperature, we observe the transition from diffusive to quasi-ballistic heat transport

Grism Based Stretcher/Compressor System for Amplified, Femtosecond Kilohertz Lasers

We demonstrate a simple and efficient grism based stretcher/compression system. 40 fs, 300 µJ pulses are generated at 5 kHz using this unique amplifier design.

Ultrafast Molecular and Materials Dynamics probed by Coherent X-Rays

Ultrafast short-wavelength light is ideal as a probe of complex, highly excited, systems. We resolve for the first time the decay of core-excited atoms adsorbed onto a surface, and x-ray driven molecular dissociation

Ultrafast Coherent Interactions in Quantum Wells Studied by Two-Dimensional Fourier Transform Spectroscopy

Many-body effects dominate the polarization studies of heavy- and light-hole excitons. Accurate simulations require Coulomb correlations beyond Hartree-Fock approximation. Raman coherences are isolated with a new two-dimensional projection.

Enhanced High Harmonic Generation from Ions using a Capillary Discharge

We demonstrate a significant increase of the high harmonic cutoff in xenon, from 70 eV to 150 eV, using a pre-ionized plasma created with a capillary discharge.

Observation of Intra-molecular Vibrational Dynamics Using High-Harmonic Generation as a Probe

As one of the first observations of intra-molecular dynamics using high-order harmonic generation, we impulsively excite vibrations in SF6 and observe oscillations in the intensity of high-order harmonic emission from these molecules.