Diode pumped cryogenic-cooled Yb:YAG disc laser amplifier

Wang, J. L.
Cheng, X. J.
Ma, M.
Liu, J.
Li, L.
Yang, Z. G.
Shi, X. C.
Chen, W. B.

Publication date

January 2014

Abstract

We demonstrate a cryogenic cooled Yb:YAG disc laser amplifier with V-shape and active-mirror configuration, end-pumped by InGaAs laser diode array. It consists of a cryogenic Yb: YAG regenerative amplifier and an additional six-pass Yb: YAG disc amplifier. Performances of the laser amplifier at low temperature over a range of 80-280 K are investigated theoretically and experimentally. A maximum output energy of 442 mJ, 10 ns pulses at a 10 Hz repetition rate is obtained for the laser in six-pass amplification at 120 K temperature; the corresponding optical-to-optical efficiency is 17.3%