More than 50 large aperture optics coated by Safran Reosc have been delivered to LULI for the APOLLON laser facility. Coating designs, processes and measurements are discussed with regard to the requirements. As a part of these optics is mounted on the beam line, we present operational performances with a specific focus on LIDT. This paper also relates the challenge to give a reliable LIDT value within a specific application toward the coatings of those component that have been tested by several LIDT-testing facilities. This test results are discussed and compared with LIDT test performed with the APOLLON laser beam.
In this paper we are giving a summary of the Apollon 10 PW facility laser design together with updated laser
performance. The Apollon facility is currently under construction in France. The APOLLON laser system is a laser
designed for delivering pulses as short as 15 fs (10-15 s) with an energy exceeding 150 Joules on target. The peak power
delivered by this laser system will be 10 Petawatts (1016W). The Apollon laser system will be delivering 4 beams: one 10
PW beam (F1 beam 400 mm diameter), one 1 PW beam (F2 beam 140 mm diameter) and two additional probe beams
(F3 and F4) at a repetition rate of 1 shot per minute. The laser system is based on Ti-sapphire amplifiers pumped by
frequency doubled solid-state lasers. The repetition rate of the high energy part will be 1 shot per minute. The main beam
at the output of the last amplifier will be split and dispatched to two experimental areas. The main laser beam is
delivering 30 J before compression at a repetition rate of 1 shot per minute and we are currently increasing to get 100J.
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