Abstract
In order to enhance the non-chain DF laser output energy and electro-optic conversion efficiency,the electrostatic field distribution of Chang electrode and flat electrode which was consisted by rough cathode and smooth anode was calculated by finite element method. For Chang electrode,the higher electric field of spark-pin was introduced,and the electrostatic field distribution of sparkpin UV pre-ionization was calculated. For the flat electrode,the electrostatic field distribution of burr on the cathode surface was calculated. The burrs on the cathode surface can form a series of higher electric field,but can't lead to uniformity of plate electrode field deteriorating. And then,pulsed discharge experiments were carried out on two kinds of electrodes,so discharging performance and output characteristics of non-chain pulsed DF laser were obtained. The discharge experiment results show that the uniform electric field is conducive to increase the output energy of nonchain pulsed DF laser. It is also verified that the higher electric field of the burrs on the cathode of self-initiated discharge DF laser is benefit to volume discharge. Besides,the self-initiated discharge is more applicable for large volume discharge.
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