Nonlinear optics of normal-mode-coupling semiconductor microcavities

Optical solitons in periodic media with resonant and off-resonant nonlinearities

“…(3.8) is τ 0 ≈ 10 −13 -10 −12 s, and the corresponding absorption length is cτ 0 /n 0 ≈ 10 -100 µm. The dephasing time for excitons discussed by Khitrova, Gibbs, Jahnke, Kira and Koch [1999] is 1/Γ 2 ≈ 10 −13 s, which seems to be the chief limitation of the soliton lifetime for this system. The structures shown in Figs.…”

“…Let us now discuss the experimental conditions for the realization of RABR solitons using quantum wells embedded in a semiconductor structure with periodically alternating linear index of refraction (Khitrova, Gibbs, Jahnke, Kira and Koch [1999]). We can assume the following values: the average refraction index is n 0 ≈ 3.6, the wavelength (in the medium) λ ≈ 232 nm, which corresponds to the angular frequency ω c ≈ 2.26×10 15 s −1 .…”

“…We can assume the following values: the average refraction index is n 0 ≈ 3.6, the wavelength (in the medium) λ ≈ 232 nm, which corresponds to the angular frequency ω c ≈ 2.26×10 15 s −1 . Excitons in quantum wells can, under certain conditions (such as low densities and proximity of the operating frequency to an excitonic resonance, see Khitrova, Gibbs, Jahnke, Kira and Koch [1999]) may be regarded as effective two-level systems (TLS's). We consider their surface density to be ≈ 10 10 -10 11 cm −2 , which corresponds to a bulk density ρ 0 ≈ 10 15 -10 16 cm −3 .…”

“…In the work by Khitrova, Gibbs, Jahnke, Kira and Koch [1999], the width of the active layers (quantum wells) is considered to be 5 -20 nm, which corresponds to the parameter γ 2 (see Eq. (4.29)) in the range 10 −3 -2 × 10 −2 .…”

“…5 -Ch. 7 is to use thin layers of rare-earth ions (Greiner, Boggs, Loftus, Wang and Mossberg [1999]) embedded in a spatiallyperiodic semiconductor structure (Khitrova, Gibbs, Jahnke, Kira and Koch [1999]). The two-level atoms in the layers should be rare-earth-ions with the density of 10 15 − 10 16 cm −3 , and large transition dipole moments.…”