Efficient Coupling of High-Intensity Sub-Picosecond Laser Pulses into Solid Grating Targets

M. Mumane; H. Kapteyn; J. Bokor; W. Mansfield; R. Gnall; E. Glytsis; T. Gaylord; R. Falcone

doi:10.1364/SWCR.1991.TuE1

Short-Wavelength Coherent Radiation: Generation and Application
Technical Digest Series (Optica Publishing Group, 1991),
paper TuE1
•https://doi.org/10.1364/SWCR.1991.TuE1

Efficient Coupling of High-Intensity Sub-Picosecond Laser Pulses into Solid Grating Targets

M. Mumane, H. Kapteyn, J. Bokor, W. Mansfield, R. Gnall, E. Glytsis, T. Gaylord, and R. Falcone

Short Wavelength Coherent Radiation: Generation and Applications 1991

Monterey, California United States
8–10 April 1991
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Solid Target Interactions (TuE)

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M. Mumane, H. Kapteyn, J. Bokor, W. Mansfield, R. Gnall, E. Glytsis, T. Gaylord, and R. Falcone, "Efficient Coupling of High-Intensity Sub-Picosecond Laser Pulses into Solid Grating Targets," in Short-Wavelength Coherent Radiation: Generation and Application, Technical Digest Series (Optica Publishing Group, 1991), paper TuE1.

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Abstract

We have experimentally observed very efficient laser-solid coupling of high-intensity (10¹⁶Wcm^–2) sub-picosecond (150 fsec) laser pulses into grating targets.¹ This behavior is in contrast to the very high reflectivities observed from flat targets,² where we have recently extended our measurements of normal-incidence flat-target reflectivities up to incident intensities exceeding 10¹⁶ W cm^–2. The average flat target reflectivity observed was 86% - the peak reflectivity at the center of the focal spot and peak of the laser is therefore ≥ 90%. This data is shown in Fig. 1.

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