The pulse response of an optically excited vertical-cavity surface-emitting laser is optimized by shaping the pump pulse. The temporal phase and amplitude of the excitation are adjusted by a learning loop with live spectrotemporal monitoring of excitation and emission pulses using a streak camera. The genetic algorithm of the loop is inspired by the optimization occurring in evolution in biology. The pulse response is such decreased from 4.8to2ps⁠. Emission intensity shows strong correlation with the pulse delay and also improves by 63%.

Topics
Animal sounds, Semiconductor devices, Evolutionary computation, Control theory, Optical properties, Optical reflectors, Quantum wells, Streak cameras, Lasers, Phase variation
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© 2006 American Institute of Physics.
2006
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