Abstract
In this work we report on the observation of photon echo inside acetylene-filled hollow-core photonic crystal fibers. The experiments were performed using a sequence of two short (~2ns) optical pulses tuned to the P9 (1530.37 nm) acetylene absorption line. The photon echo effect was observed on the basis of high optical powers (~4 W) and in the acetylene’s low pressure regime <0.5 Torr. The main results prove the formation of photon echo by showing that the obtained echo signals are consistent with the expected behavior, in intensity and optical delay, under variations of the input pulse separation.
© 2014 Optical Society of America
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