The optimum pumping power for optically pumped FIR lasers
Abstract
The relations between the output power of optically pumped FIR laser and the pumping power were studied theoretically by solving the density matrix equation of fourlevel system by means of the matrix signal flow graph method. The output power density of FIR laser was calculated by iteration method. A set of curves of output FIR power density against pumping power has been obtained. It has found that every of each curve has a maximum point of which the position is different for different pumping detuning. According the these results we predicted that there would exist an optimum pumping power density for an optically pumped FIR laser with certain pumping detuning. This theoretical results would help us to design the optically pumped FIR lasers.
 Publication:

International Journal of Infrared and Millimeter Waves
 Pub Date:
 October 1985
 DOI:
 10.1007/BF01010682
 Bibcode:
 1985IJIMW...6.1061Y
 Keywords:

 Infrared Lasers;
 Laser Outputs;
 Nonlinear Optics;
 Optical Pumping;
 Submillimeter Waves;
 Far Infrared Radiation;
 Matrices (Mathematics);
 Power Gain;
 Power Spectra;
 Signal Flow Graphs;
 Lasers and Masers;
 Submillimeter wave laser;
 Optically pumped FIR lasers;
 Nonlinear optics;
 Multiphoton processes