Feasibility of laser stimulated emission produced by iodine plasma

As the iodine laser is pumped by chemical energies at present, it shows a larger cubage, shorter running time and produces toxic materials easily. These disadvantages limit the application of the iodine laser. To meet the requirements of the miniature, pollution-free and high power iodine laser in practical applications, a new idea for iodine laser production was proposed in this paper. Firstly, a plasma generation model was established to produce a 1315 nm iodine laser stimulated emission. To obtain the optimum parameter range of an experiment in our experiment conditions, the power density of pump light, ionization electron density and the free electron temperature were calculated. Then in the optimum parameter range calculated, the iodine plasma generated by a single longitudinal mode second-harmonic Nd:YAG laser (532 nm) was detected by a spectrometer to obtain its fluorescence emission spectrum. Finally, the fit result for the signal obtained in the experiment shows that the signal peak is located at 1313 nm with a bandwidth of 1.182 nm. The results reported here demonstrates the possibility that the iodine plasma is acted as laser media to produce stimulated emission.