Nonlinear optical properties of a Poschl-Teller quantum well
PHYSICAL REVIEW B, cilt.72, sa.11, 2005 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 72 Sayı: 11
- Basım Tarihi: 2005
- Doi Numarası: 10.1103/physrevb.72.115340
- Dergi Adı: PHYSICAL REVIEW B
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Orta Doğu Teknik Üniversitesi Adresli: Evet
Özet
The nonlinear optical properties of quantum wells (QWs) represented by a Poschl-Teller confining potential are studied. This potential is well suited for such purposes as it can easily become asymmetrical by a correct choice of its parameter set. We calculate the linear and the third-order nonlinear optical intersubband absorption coefficients, the second-harmonic generation (SHG) susceptibility tensor, and optical rectification (OR) under the density matrix formalism. Numerical results for a typical GaAs QW are presented. The resulting SHG and the OR coefficients are much larger than their values for bulk GaAs.