Transit time of chirped pulses through one-dimensional, nonabsorbing barriers

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Citation of Original Publication

G. D’Aguanno, M. Centini, M. J. Bloemer, K. Myneni, M. Scalora, C. M. Bowden, C. Sibilia, and M. Bertolotti, "Transit time of chirped pulses through one-dimensional, nonabsorbing barriers," Opt. Lett. 27, 176-178 (2002),


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Experiments show that the transit times of chirped, narrow-band pulses that move across nonabsorbing, one-dimensional barriers are modified dramatically by the interplay between the chirp and the transmission function of the sample. In an experiment we monitored 0.9-ns chirped, nearly Gaussian pulses as they traversed a 450‐µm GaAs etalon. At certain wavelengths pulse transit times can be superluminal or even negative. To explain these phenomena we have proposed a generalization of the transit time for chirped pulses that is still meaningful even when the transit times are superluminal or negative. Our predictions agree well with the experimental results.