Three different Nd3+ aprotic solvent laser solutions: Nd3+:SeOCl2:SnCl4; Nd3+:POCl3:SnCl4; and Nd3+:POCl3:ZrCl4 are considered in terms of their laser characteristics as oscillators and amplifiers. It is shown that such solutions have a loss that varies between 0.5 and 1.0% per centimeter and that their material efficiencies are at least comparable to those of an L.G. 55 (Schott) glass. As oscillators, the different solutions are shown to be equivalent to each other; as an amplifier only the SeOCl2 system was studied and this has produced gains of 18 dB in the small signal case.

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ASETNACTThis report covers the construction of a liquid laser designed for operation as an oscillator-amplifier in the high brightness mode. The new aspects of the design of the laser cells, the cooling system p-iid the power supply are presented and discussed. The entire system is nearly ready to be put into operation.

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