Abstract
Results are presented of an investigation of the lasing characteristics of a high-power neodymium silicate glass spoke-waveguide laser. The influence of short-lived color centers on the lasing properties is investigated. It is shown that short-lived color centers lead to generation of regular giant pulses with repetition frequency up to 30 kHz, to a substantial lengthening of the decay time of the neodymium-ion metastable level (via a decrease of the superluminescence background) and by the same token to an increase of the lasing efficiency. A high-power technological waveguide laser with spokelike active elements, emitting a train of regular giant pulses with total emission energy up to 20 J and high homogeneity of the emission-field distribution is developed on the basis of the reported investigations.
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Additional information
Quantum Radiophysics Division, Lebedev Physics Institute. Translated from Preprint No. 154 of the Lebedev Physics Institute, Academy of Sciences of the USSR, Moscow, 1990.
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Dzhibladze, M.I. High-power neodymium-glass waveguide laser. J Russ Laser Res 12, 208–221 (1991). https://doi.org/10.1007/BF01126638
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DOI: https://doi.org/10.1007/BF01126638