A highly efficient, 10-J output signal amplifier for ultra-intense all-OPCPA systems

I. A. Begishev; S.-W. Bahk; C. Dorrer; C. Feng; M. J. Guardalben; C. Jeon; R. G. Roides; M. Spilatro; B. Webb; D. Weiner; J. D. Zuegel; J. Bromage

doi:10.1117/12.2578059

5 March 2021 A highly efficient, 10-J output signal amplifier for ultra-intense all-OPCPA systems

I. A. Begishev, S.-W. Bahk, C. Dorrer, C. Feng, M. J. Guardalben, C. Jeon, R. G. Roides, M. Spilatro, B. Webb, D. Weiner, J. D. Zuegel, J. Bromage

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Proceedings Volume 11666, High Power Lasers for Fusion Research VI; 1166607 (2021) https://doi.org/10.1117/12.2578059
Event: SPIE LASE, 2021, Online Only

Abstract

Optical parametric chirped-pulse amplification (OPCPA) using high-energy Nd:glass lasers has the potential to produce ultra-intense pulses (>10²³ W/cm²). We report on the performance of the final high-efficiency amplifier in an OPCPA system, based on large-aperture (63 x 63-mm²) partially deuterated potassium dihydrogen phosphate (DKDP) crystals. The seed beam (170 nm, 100 mJ) was provided by the preceding OPCPA stages. The maximum pump-to-signal conversion efficiency of 33% was achieved with a 52-mm-long DKDP crystal and 40-J pump energy at 527 nm due to the flattop super-Gaussian pump beam profile and flat-in-time pulse shape. The 11.8-J output signal was compressed to 20 fs.

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I. A. Begishev, S.-W. Bahk, C. Dorrer, C. Feng, M. J. Guardalben, C. Jeon, R. G. Roides, M. Spilatro, B. Webb, D. Weiner, J. D. Zuegel, and J. Bromage "A highly efficient, 10-J output signal amplifier for ultra-intense all-OPCPA systems", Proc. SPIE 11666, High Power Lasers for Fusion Research VI, 1166607 (5 March 2021); https://doi.org/10.1117/12.2578059

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