22 April 2008 Effects of pulse timing parameters on bulk erbium laser operation in the eyesafe region
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Abstract
Diode-pumping with appropriately modulated pulses is used to expose subtle input / output pulse-timing characteristics of Er3+:Yb3+-codoped systems, particularly Er3+:Yb3+:glass and Er3+:Yb3+:YAG, and study their relation to laser efficiency. In free-running operation, these systems may persist to lase for uncommonly long time periods (up to a ms) after the pump stops. In Q-switched operation, maximum laser output is obtained only if Q-switching is purposely delayed for some significant additional time (typically 50-500μs) following the end of the pump pulse. Furthermore, pump-pulse duration affects profoundly the Er3+:Yb3+-laser output performance, especially in Q-switched mode. Numerical modeling simulations are presented, accounting for the observed effects and extrapolating them to novel regimes of Er3+:Yb3+-laser operation.
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E. Georgiou, E. Georgiou, N. Lazarides, N. Lazarides, O. Musset, O. Musset, J. P. Boquillon, J. P. Boquillon, } "Effects of pulse timing parameters on bulk erbium laser operation in the eyesafe region", Proc. SPIE 6998, Solid State Lasers and Amplifiers III, 69980S (22 April 2008); doi: 10.1117/12.781020; https://doi.org/10.1117/12.781020
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