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 SM ISO690:2012TRONCIU, Vasile, SCHWERTFEGER, Sven, RADZIUNAS, Mindaugas, KLEHR, Andreas, BANDELOW, Uwe, WENZEL, Hans. Numerical simulation of the amplification of picosecond laser pulses in tapered semiconductor amplifiers and comparison with experimental results. In: Optics Communications, 2012, vol. 285, pp. 2897-2904. ISSN 0030-4018. DOI: https://doi.org/10.1016/j.optcom.2012.02.036 |
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  Optics Communications |
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| Volumul 285 / 2012 / ISSN 0030-4018 | ||||||
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| DOI:https://doi.org/10.1016/j.optcom.2012.02.036 | ||||||
| Pag. 2897-2904 | ||||||
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We apply a traveling wave model to the simulation of the amplification of laser pulses generated by Q-switched or mode-locked distributed-Bragg reflector lasers. The power amplifier monolithically integrates a ridge-waveguide section acting as pre-amplifier and a flared gain-region amplifier. The diffraction limited and spectral-narrow band pulses injected in to the pre-amplifier have durations between 10 ps and 100 ps and a peak power of typical 1 W. After the amplifier, the pulses reach a peak power of several tens of Watts preserving the spatial, spectral and temporal properties of the input pulse. We report results obtained by a numerical solution of the traveling-wave equations and compare them with experimental investigations. The peak powers obtained experimentally are in good agreement with the theoretical predictions. The performance of the power amplifier is evaluated by considering the dependence of the pulse energy as a function of different device and material parameters. |
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| Cuvinte-cheie Picosecond pulse amplification, Tapered semiconductor amplifier, Traveling wave model |
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