A hybrid OPCPA/Nd:phosphate glass multi-terawatt laser system for seeding of a petawatt laser |
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| Authors: | Jens Schwarz Patrick Rambo Matthias Geissel Mark Kimmel Erik Brambrink Briggs Atherton Jack Glassman |
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| Affiliation: | aSandia National Laboratories, P.O. Box 5800, MS 1193, Albuquerque, NM 87185-1193, United States;bSouthern Illinois University Edwardsville, Department of Physics, P.O. Box 1654, Edwardsville, IL 62026-1654, United States |
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| Abstract: | To enhance radiographic abilities on its Z-Accelerator, Sandia National Laboratories is incorporating a petawatt laser system into the existing Z-Backlighter laser facility. As part of this work, a short-pulse laser has been constructed to seed the larger Beamlet type Nd:phosphate glass slab amplifiers. This seed laser consists of an optical parametric chirped pulse amplification (OPCPA) system joined to a Nd:phosphate glass rod amplifier system in order to achieve multi-Joule sub-picosecond operation. The rod amplifier system has been modeled using the Miró code which shows good agreement with the experimental results. This system can achieve focal intensities up to 1018 W/cm2 at a repetition rate of once every 20 min and has been applied to produce k-alpha X-rays in copper. |
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| Keywords: | OPCPA TW Laser |
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