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Time-polarization multiplexing for increased output power of semiconductor optical amplifiers in the pulsed regime

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Abstract

We present a setup capable of overcoming the saturation output power of semiconductor optical amplifiers operating in the pulsed regime. The concept is to couple different time delays to orthogonal polarization modes, amplify the pulses multiplexed in time, and use the polarization information to recombine them into a single high-power optical pulse. Making use of a single amplifier and two polarizing beam splitters, we were able to amplify pulses with as much as 1.9 dB above the saturation output power of the device. We also show that the method is scalable if any number of polarizing beam splitters is available, where each extra device contributes roughly 1.9 dB to the overall above-saturation amplification factor.

© 2016 Optical Society of America

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