Third-order Nonlinear Optical Properties of Ethylenic Tetrathiafulvalene Derivatives

Enhanced nonlinear optical properties due to electronic delocalization in conjugated benzodifuran derivatives

“…Conjugated and functionalized organic materials have attract scientific consideration in recent years thanks to their potential applications as organic semiconducting materials in electronic and optoelectronics devices such as field effect transistors, photovoltaic cells, electroluminescent diodes (Sahraoui et al 2009;Pron et al 2010;Klauk 2010;Cheng et al 2009;Mishra and Bauerle 2012). The π-conjugation trough the tetrathiafulvalene (TTF) core with highly delocalized pi-electron and their theoretical calculations establish an important contribution and ply crucial role for NLO applications (Terkia-Derdra et al 2000;Sahraoui et al 1995). The investigation of the benzodifuran derivatives building block in the π-conjugated side chains has been continued with the study of benzodifuran in the polymer backbone.…”

Multipurpose high-power electrogasdynamic CO laser

“…This is an unrealistic third-order susceptibility for a dilute transparent organic material (6.5% concentration in weight), out of resonance with the fundamental and harmonic beams: 2-4 orders of magnitude greater than that of CS 2 [5]. Additionally, such an EFISHG effect should be correlated with the third-order microscopic polarizability of the molecules and not the secondorder one [4], as claimed in the abstract.…”

Influence of Free Carrier Concentration on Nonlinear Absorption of n-Type ZnSe Crystals

“…3 the experimental data for ZnSe crystal annealed at 870°C. The phase conjugation efficiency R is calculated from the propagation equations [8] of the four beams in interaction, using the slowly varying amplitude approximation and taking in account linear and nonlinear absorption and the transformation from the crystallographic axis to laboratory axis. The phase conjugation efficiency R can be expressed as follows:…”