The high-efficiency pulsed HF Optical Resonance Transfer Laser (ORTL) is described in this paper. The multiline laser output, pulse shape, pulse width, and efficiency were all calculated by using the HF computer codes which have been developed in our laboratory. Parametric studies were also done to optimize system efficiency and, as a result, the ratio of laser output energy to pumping energy was as large as 56%. The lasing lines of the ORTL covered the wavelength region between 3.0 and 3.8 μm. Comparison of the results of this simulation with the experiments of cw-ORTL shows that the pulsed ORTL could be more efficient operation.
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