Second harmonic generation in GF(m,1) ferroelectric superlattices

作者：Chen, Y; Yang, X^*; Guo, Q; Lan, S

来源：Journal of Physics: Condensed Matter , 2006, 18(8): 2587-2600.

DOI：10.1088/0953-8984/18/8/020

• Ferroelectric superlattices
• Imperfect quasi-phase-matched (IQPM)
• Quasiperiodic ferroelectric domain system

In this paper we Study under the small-signal approximation the properties of the Output electric field of second harmonic generation (SHG) for vertical transmission in Family A of the generalized Fibonacci (GF(m, 1)) quasiperiodic ferroelectric domain system. It is found that under perfect quasi-phase-matched (PQPM) conditions there exists self-similarity for the intense peaks of SHG (IPSHG) in real space and the two integers q and p indexing IPSHG make an interesting zero-odd set when in is large enough. On the other hand, self-similarity for IPSHG is broken under imperfect quasi-phase-matched (IQPM) conditions and the SHG spectra comprise a group of intense peaks and another group of satellite weak lines when in is very large. The corresponding integers q and p make an interesting odd-odd set and a successive integer set, respectively. Two kinds of effects of vacancies on SHG have also been found. The analytical results are confirmed by numerical simulations.

• 出版日期2006-3-1
• 单位华南师范大学