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High-contrast 10 fs OPCPA-based front end for multi-PW laser chains

Abstract : Applications using multi-PW lasers necessitate high temporal pulse quality with a tremendous contrast ratio (CR). The first crucial prerequisite to achieve multi-PW peak power is the generation of ultrashort pulses with good spectral phase quality. Second, to avoid any deleterious pre-ionization effect on targets, nanosecond contrast better than 10121012 is also targeted. In the framework of the Apollon 10 PW French laser program, we present a high-contrast 10 fs front-end design study to inject highly energetic Ti:sapphire PW lasers. The CR has been measured and analyzed in different time ranges highlighting the different major contributions for each scale.
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Submitted on : Monday, January 8, 2018 - 3:05:52 PM
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N. Papadopoulos, P. Ramirez, K. Genevrier, L. Ranc, N. Lebas, et al.. High-contrast 10 fs OPCPA-based front end for multi-PW laser chains. Optics Letters, Optical Society of America, 2017, 42 (18), pp.3530-3533. ⟨10.1364/OL.42.003530⟩. ⟨hal-01676598⟩

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