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(a) The related energy level diagram for Pr:YSO. (b) Schematic diagram of the experimental setup. BS: beam splitter; : lens; AOM: acoustooptic modulator; PD: photodiode; OS: oscilloscope.
(a) Slow light demonstration. (b) The probe signal in the absence of the erasing pulse. (c) The probe signal in the presence of the erasing pulse. The dot (dash) line corresponds to the control (erasing) pulse. The peak power of the erasing pulse is and its width is .
(a) Erasing efficiency vs the width of the erasing pulse with a constant intensity . (b) Erasing efficiency vs the intensity of the erasing pulse with a constant width of . Solid squares are experimental data. Solid curve is the theoretical fitting curve. The fitting parameter is 0.2 for (a) and 0.072 for (b).
Erasing efficiency vs the energy of the erasing pulse for different fixed storage times. Squares, circles, triangles, and asterisks correspond to 10, 12, 14, and storage time, respectively. The fitting parameter .
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