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By Rachel Ruth Comroe

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Extra info for A Search for Evidence of the Radioactive Decomposition of Barium

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The index i extends over all the input signals and Si stands for the photon density of the input signal. For instance, in the case of wavelength conversion shown in Fig. 2, the symbol i with “cnv” and “in” represents the probe signal and control signal. Si is related to the signal power Pi of the input signal as in Eq. 19). e. the optical bandwidth of the SOA. The longitudinal mode spacing of a cavity with a length L is given as Δf = vg 2L . 26) where the cut-off frequency fc is the frequency point, at which the modal gain falls to zero for increasing λ.

This leads to a better understanding of the temporal evolution of the effective α-factor. We look at a magnified time window of 18 ps from Fig. 4(b) and Fig. 3. The evolution of output power and phase are shown in Fig. 6 and the evolution of the effective α-factor is shown in Fig. 7. In order to simplify the discussion we have split the time interval into 4 windows. Our discussion starts with window A, when the control signal is launched into the SOA. In this window the amplitude of the cw signal is suppressed because of carrier depletion in the bands but also because of the fast compression effects such as SHB and CH.

However, the total carrier number is less than that in the stationary state in Fig. 1(a). Then, the carriers are injected from external electrical circuit and refilled in the respective bands. Finally, the carrier distribution recovers to the quasi-equilibrium state, seen in Fig. 1(e). Fig. 2. Evolution of the power gain in a cross-gain modulation experiment. Solid and dashed lines are the measurement and simulation results, respectively. TPA: two-photon absorption; SHB: spectral hole burning; CH: carrier heating.

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A Search for Evidence of the Radioactive Decomposition of Barium by Rachel Ruth Comroe


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