Abstract

Far-field intensity distribution as well as its temporal evolution of the output from a copper vapor laser oscillator at different operating conditions are measured in detail. Experimental observation has been performed about the influence of delay time between the oscillator and amplifier on the far-field intensity distribution of the output from the amplifier. Beam propagation in an injection-controlled copper vapor laser system has been investigated on account of thermal lens effect. The application of a single-pass unfolded amplifier model has been successfully demonstrated to describe beam propagation in the power oscillator by the temporal measurement. It has been found that the thermal lens effect greatly influences the spatial distribution of laser beam from an injection-controlled system.

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