S. Kocinac et al., Second harmonic generation at the quantum-interference induced transparency in semiconductor quantum wells: The influence of permanent dipole moments, IEEE J Q EL, 37(7), 2001, pp. 873-876
The influence of permanent dipole moments of quantized states on intersubba
nd second harmonic generation based on quantum-interference induced transpa
rency in semiconductor quantum wells is explored using the harmonic balance
method. The permanent moments are found to be quite important: they affect
the transparency condition, especially at larger pump intensities. Hence,
both the conversion efficiency and the optimal interaction path length chan
ge significantly when accounting for the permanent moments, and the convers
ion efficiency is reduced.