High-energy and high-average-power two-channel Yb:YAG amplifier with passive coherent combining

High-energy and high-average-power two-channel Yb:YAG amplifier with passive coherent combining

A two-channel laser amplifier with passive coherent combining based on Yb:YAG active elements with bright diode end pumping was developed. The pulse energy limits of a one-channel scheme are investigated, and the ability to double pulse energy in the two-channel scheme is demonstrated. 10 mJ pulse e...

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Veröffentlicht in:Journal of the Optical Society of America. B, Optical physics Optical physics, 2022-10, Vol.39 (10), p.2692
Hauptverfasser: Kuznetsov, Ivan, Chizhov, Sergey, Palashov, Oleg
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container_title Journal of the Optical Society of America. B, Optical physics
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creator Kuznetsov, Ivan
Chizhov, Sergey
Palashov, Oleg
description A two-channel laser amplifier with passive coherent combining based on Yb:YAG active elements with bright diode end pumping was developed. The pulse energy limits of a one-channel scheme are investigated, and the ability to double pulse energy in the two-channel scheme is demonstrated. 10 mJ pulse energy at a repetition rate of 1.5 kHz and 5 mJ at 6 kHz simultaneously with high gain and perfect beam quality at coherent combining efficiency over 97% was achieved.
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