| To improve the Cr4+:YAG laser performance,in order to obatain high output power of continuous laser light source,this thesis focuses on the impact of continuous room-temperature Cr4+:YAG laser to optimize the performance analysis of various factors.This thesis laser rate equations based on theoretical model and numerical method of calculation of saturated absorption of the pump laser threshold and efficiency data for research,and ultimately determine the ground state absorption cross section, stimulated emission and excited state absorption cross section values of the laser were 1.3×10-22m2,0.948×10-23m2 and 0.089×10-23m2,respectively.On the part of the optimization model the best cross section of laser were used,assuming that all the doping concentration in the crystal is a constant FOM(FOM=110),the input pump power,crystal temperature and pump waist edge of the values were for the 5.6W,3℃and 30μm,respectively;the optimal analysis by the Cr4+:YAG laser with maximum output power of the crystal length,crystal absorption coefficient and the output coupling cavity transmission parameters such as crystal and the best value,the results show that the best values of the small signal absorption coefficient and crystal length were 0.56cm-1and 2cm,and further shows the output coupler transmission of 2% should produce the maximum continuous-wave output power.When the pump continuously pumped,as the thermal effect caused by the temperature difference within the laser crystal will seriously affect the Cr4+:YAG laser performance.Therefore this paper by studying the impact of the quality of the heat load factor of Cr4+:YAG laser thermal load in the analysis of phenomena;and the numerical value of the quality factor is equal to 29. |
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