Ionic two photon states and optical nonlinearity in. pi. -conjugated polymers

Conference · Tue Nov 06 04:00:00 EST 1990

OSTI ID:6236472

Dixit, S N ^[1]; Guo, D; Mazumdar, S ^[2]

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1. Lawrence Livermore National Lab., CA (USA)
2. Arizona Univ., Tucson, AZ (USA). Dept. of Physics

A microscopic mechanism of optical nonlinearity in {pi}-conjugated polymers is presented. It is shown that the bulk of the nonlinearity is determined by only two well defined channels, even though an infinite number of channels are possible in principle. The above conclusion is true for both short and long range Coulomb interactions. The complete frequency dependence of the third harmonic generation in both trans-polyacetylene and polydiacetylene are explained within the same theoretical picture. 19 refs., 4 figs.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• Sponsoring Organization: DOE/DP
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6236472
• Report Number(s): UCRL-JC-103634; CONF-9006218--2; ON: DE91006709
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
COULOMB FIELD
DATA
ELECTRIC FIELDS
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXCITATION
FREQUENCY DEPENDENCE
FREQUENCY MIXING
HAMILTONIANS
HARMONIC GENERATION
HYDROCARBONS
INFORMATION
MATHEMATICAL MODELS
MATHEMATICAL OPERATORS
NONLINEAR OPTICS
NUMERICAL DATA
NUMERICAL SOLUTION
OPTICAL PROPERTIES
OPTICS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PHYSICAL PROPERTIES
POLYACETYLENES
POLYENES
POLYMERS
QUANTUM OPERATORS
THEORETICAL DATA