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Proceedings Paper

High energy and high stability optical parametric chirped pulse amplifier for seeding the petawatt beamlines of the Orion laser facility
Author(s): M. T. Girling; S. F. J. Parker; D. Hussey; N. W. Hopps
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Paper Abstract

A high-conversion-efficiency optical parametric chirped-pulse amplifier (OPCPA) with high-energy-stability is demonstrated using lithium triborate (LBO) crystals. Total conversion efficiency of 25% is realised with a net gain of greater than 108. An output energy of ~180mJ at a 2-Hz repetition rate, with a stability of better than 1.5% rms is achieved. The output beam takes the spatial profile of the 20th-power super-Gaussian pump beam, whose intensity deviates by less than 7.5% rms over the central 90%. The far-field, whose diameter is near diffraction limited, has a pointing stability of less than one-twelfth of an airy-radius. To the authors' knowledge this is the first demonstration of an all LBO OPCPA to simultaneously achieve this level of performance.

Paper Details

Date Published: 19 May 2010
PDF: 11 pages
Proc. SPIE 7721, Solid State Lasers and Amplifiers IV, and High-Power Lasers, 772122 (19 May 2010); doi: 10.1117/12.853916
Show Author Affiliations
M. T. Girling, Atomic Weapons Establishment (United Kingdom)
S. F. J. Parker, Atomic Weapons Establishment (United Kingdom)
D. Hussey, Atomic Weapons Establishment (United Kingdom)
N. W. Hopps, Atomic Weapons Establishment (United Kingdom)

Published in SPIE Proceedings Vol. 7721:
Solid State Lasers and Amplifiers IV, and High-Power Lasers
Thomas Graf; Gerhard G. Paulus; Jacob I. Mackenzie; Vincent Bagnoud; Catherine Le Blanc; Helena Jelinkov√°, Editor(s)

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