- Conference date: 3–5 November 2010
- Location: Bad Honnef, (Germany)
We analyze applicability of the ε″<0 approximation to wave propagation in active material, comparing the results to the FDTD‐based calculation employing more general Maxwell‐Bloch model. It is shown that the slab thickness should be less than some critical value, corresponding to the divergence of the Airy series and to the start of the laser generation. Modification of the Fresnel approach to transient problems is suggested.
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