Thermal effect research of Nd3+ doped laser crystals in end-pumped all-solid-state lasers

In diode pumped all-solid-state laser system laser crystal absorbing diode pumped energy will generate laser oscillation,simultaneously quite a part of pump energy will be translated into heat which is dissipated inside crystal.The thermal phenomena induced thermal effects seriously influence laser's performance and quality.According to laser crystal end-pumping mode analysis,laser crystal's interior temperature field and thermal distortion field calculation means are obtained by semi-analytical thermal analysis method.Under the same working conditions several typical Nd-ion doped laser crystal's temperature field and end face thermal distortion field as well as reasons of discrepancy are quantitatively analyzed.The analysis method and research results can also be applied to analyze temperature field and thermal distortion field of inner thermal source with axis-symmetrical profile models.The work will supply theory groundwork for design of diode pumped all-solid-state lasers.