High-temperature operation of a diode-pumped passively Q-switched Nd:YAG/Cr4+:YAG laser |
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Authors: | T Dascalu N Pavel |
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Institution: | 1. Laboratory of Solid-State Quantum Electronics, National Institute for Laser, Plasma and Radiation Physics, Bucharest, R-077125, Romania
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Abstract: | The output performances of a diode-pumped Nd:YAG laser passively Q-switched by Cr4+:YAG saturable absorber crystal were investigated function of temperature. Increase of the temperature from 25 to 150°C increased
slightly the laser pulse energy, and did not change the pulse duration. Furthermore, an increased absorbed energy of the pump
radiation was necessary at temperatures higher than 25°C in order to maintain Q-switch operation. Measurements concluded that
Cr4+:YAG transmission did not vary when temperature increased to 150°C. The decrease of Nd:YAG emission cross section with temperature
and the changes of resonator configuration due to thermal effects were considered as main reasons for this behavior. The results
of this work are valuable for designing a laser-ignition system for industrial gas engine or automotive industry. |
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