• High Power Laser Science and Engineering
  • Vol. 8, Issue 4, 04000e43 (2020)
François Lureau1, Guillaume Matras1, Olivier Chalus1, Christophe Derycke1, Thomas Morbieu1, Christophe Radier1, Olivier Casagrande1, Sébastien Laux1, Sandrine Ricaud1, Gilles Rey1, Alain Pellegrina1, Caroline Richard1, Laurent Boudjemaa1, Christophe Simon-Boisson1, Andrei Baleanu2, Romeo Banici2, Andrei Gradinariu2, Constantin Caldararu2, Bertrand De Boisdeffre3, Petru Ghenuche3, Andrei Naziru3、4, Georgios Kolliopoulos3, Liviu Neagu3, Razvan Dabu3, Ioan Dancus3、*, and Daniel Ursescu3
Author Affiliations
  • 1Thales LAS France, 78990Élancourt, France
  • 2Thales Systems Romania, 060071București, Romania
  • 3Extreme Light Infrastructure – Nuclear Physics, ‘Horia Hulubei’ National Institute for Physics and Nuclear Engineering, 077125Bucharest Magurele, Romania
  • 4University of Bucharest, Faculty of Physics, 077125Bucharest Magurele, Romania
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    We report on a two-arm hybrid high-power laser system (HPLS) able to deliver 2 × 10 PW femtosecond pulses, developed at the Bucharest-Magurele Extreme Light Infrastructure Nuclear Physics (ELI-NP) Facility. A hybrid front-end (FE) based on a Ti:sapphire chirped pulse amplifier and a picosecond optical parametric chirped pulse amplifier based on beta barium borate (BBO) crystals, with a cross-polarized wave (XPW) filter in between, has been developed. It delivers 10 mJ laser pulses, at 10 Hz repetition rate, with more than 70 nm spectral bandwidth and high-intensity contrast, in the range of 1013:1. The high-energy Ti:sapphire amplifier stages of both arms were seeded from this common FE. The final high-energy amplifier, equipped with a 200 mm diameter Ti:sapphire crystal, has been pumped by six 100 J nanosecond frequency doubled Nd:glass lasers, at 1 pulse/min repetition rate. More than 300 J output pulse energy has been obtained by pumping with only 80% of the whole 600 J available pump energy. The compressor has a transmission efficiency of 74% and an output pulse duration of 22.7 fs was measured, thus demonstrating that the dual-arm HPLS has the capacity to generate 10 PW peak power femtosecond pulses. The reported results represent the cornerstone of the ELI-NP 2 × 10 PW femtosecond laser facility, devoted to fundamental and applied nuclear physics research.

    1 Introduction

    In the past several years, there has been significant progress in developing femtosecond high-power laser systems (HPLSs) by using a chirped pulse amplification (CPA) technique in combination with laser media having broad emission spectral bandwidth[1] and by using optical parametric chirped pulse amplification (OPCPA) in nonlinear crystals with broad parametric gain bandwidth[2]. Several petawatt (PW)-class femtosecond laser systems have been demonstrated as reported in the literature[3–13].

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    François Lureau, Guillaume Matras, Olivier Chalus, Christophe Derycke, Thomas Morbieu, Christophe Radier, Olivier Casagrande, Sébastien Laux, Sandrine Ricaud, Gilles Rey, Alain Pellegrina, Caroline Richard, Laurent Boudjemaa, Christophe Simon-Boisson, Andrei Baleanu, Romeo Banici, Andrei Gradinariu, Constantin Caldararu, Bertrand De Boisdeffre, Petru Ghenuche, Andrei Naziru, Georgios Kolliopoulos, Liviu Neagu, Razvan Dabu, Ioan Dancus, Daniel Ursescu. High-energy hybrid femtosecond laser system demonstrating 2 × 10 PW capability[J]. High Power Laser Science and Engineering, 2020, 8(4): 04000e43
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    Category: Research Articles
    Received: Aug. 1, 2020
    Accepted: Oct. 26, 2020
    Published Online: Jan. 5, 2021
    The Author Email: Ioan Dancus (ioan.dancus@eli-np.ro)