Modeling of the petawatt PETAL laser chain using Miró code

H. Coïc; J.-P. Airiau; N. Blanchot; E. Bordenave; C. Rouyer

doi:10.1364/AO.56.009491

Applied Optics
Vol. 56,
Issue 34,
pp. 9491-9501
(2017)
•https://doi.org/10.1364/AO.56.009491

Modeling of the petawatt PETAL laser chain using Miró code

H. Coïc, J.-P. Airiau, N. Blanchot, E. Bordenave, and C. Rouyer

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H. Coïc, J.-P. Airiau, N. Blanchot, E. Bordenave, and C. Rouyer, "Modeling of the petawatt PETAL laser chain using Miró code," Appl. Opt. 56, 9491-9501 (2017)

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Abstract

Miró software has been used intensively to simulate the Laser Megajoule (LMJ) with the treatment of amplification, frequency conversion, and both temporal/spatial smoothing of the beam for nanosecond pulses. We show that the software is able to model most relevant aspects of the petawatt PETAL laser chain in the subpicosecond regime, from the front-end to the focal spot with a broadband treatment of the amplification and compression stages, including chromatism compensation in the laser chain, segmentation and recombination of the beams on the second compression stage, and focusing by an off-axis parabola.

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Dispersive Element	Second-Order $a_{2}$ [ ${ps}^{2}$ ]	Third-Order $a_{3}$ [ ${ps}^{3}$ ]	Fourth-Order $a_{4}$ [ ${ps}^{4}$ ]	Fifth-Order $a_{5}$ [ ${ps}^{5}$ ]
Stretcher 1810 g/mm	−164 (−30.4 krad)	$+ 1.31 (3.3 krad)$	$- 1.30 \times 10^{- 2} (- 444 rad)$	$+ 1.5 \times 10^{- 4} (67 rad)$
$z = - 3.2547 m$
$θ = 77.2387 °$
$n = 1.0003$
Optical fiber	$- 1 (- 180 rad)$	$- 8 \times 10^{- 4} (- 2.1 rad)$	$+ 2.9 \times 10^{- 7} (+ 90 mrad)$	—
$z = 110 m$	$- 1 (- 180 rad)$	$- 8 \times 10^{- 4} (- 2.1 rad)$	$+ 2.9 \times 10^{- 7} (+ 90 mrad)$	—
$n = 1.4498$
Compressor 1680 g/mm	$+ 131 (24.3 krad)$	−1.12(−2.8 krad)	$+ 1.12 \times 10^{- 2} (+ 407 rad)$	$- 1.4 \times 10^{- 4} (- 66 rad)$
$z = 2.62 m$
$θ = 56 °$
$n = 1.0003$
Compressor 1780 g/mm	$+ 34 (6.32 krad)$	−0.19(−470 rad)	$+ 1.30 \times 10^{- 3} (+ 44 rad)$	$- 9.9 \times 10^{- 5} (- 4.6 rad)$
$z = 1.9914 m$
$θ = 77.244 °$
$n = 1.0000$

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Applied Optics