1995/07/30 by Keisuke Harigaya, Kikuo Harigaya
Materials Science · Physics and Astronomy · #Advanced Fiber Laser Technologies #Nonlinear Optical Materials Research #Photorefractive and Nonlinear Optics #chem-ph #cond-mat.supr-con #mtrl-th #supr-con
paper · pdf · doi:10.1088/0953-8984/7/38/011
published as J. Phys.: Condens. Matter 7 (1995) 7529-7534 · Accepted for publication in J. Phys.: Condens. Matter
arxiv created 1995/07/30 · openalex publication_date 1995/09/18 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
Exciton effects on conjugated polymers and the resulting optical nonlinearities are investigated in soliton lattice systems. The magnitude of the THG at the 10 percent doping increases by the factor about 102 from that of the neutral system. The huge increase by the order two is common for several choices of Coulomb interaction strengths, and is seen in open systems as well as in periodic systems. We also find that the THG enhances much larger when the number of solitons is two in the open boundaries. This new fact should be attractive to the experimentalists. Keywords: Semi-empirical models and model calculations, Electron density and excitation spectra calculations, Many-body and quasiparticle theories, Low-bandgap conjugated polymers