Test of gain coefficient in full aperture of a new multisegmentamplifier

In this paper, a new high power solidstate laser multisegmentamplifier pumped with flashlamps with 29cm×29cm aperture has been tested. Under the condition of charge voltage of 23kV and pumping energy density of 10J/cm3, the end module small signal gain coefficient of 4.925%cm-1 and the interior module small signal gain coefficient of 5.519%cm-1 in full aperture were obtained in experiments.