Electroabsorption in single-crystal film of a second-order optical material

Abstract

Articles you may be interested inLinear and second-order nonlinear optical properties of ionic organic crystals Investigation of the linear and second-order nonlinear optical properties of molecular crystals within the local field theory

Electro-optic modulation using single-crystal film of an organic molecular salt in a Fabry-Perot cavity

“…The results of electroabsorption measurements in DAST single-crystal film have been reported earlier. 11 The measurement in the present report was made at 633 nm which is close to resonance. Figure 4 shows the observed and simulated modulation peaks abs ͑⌬T / T 0 ͒ for an applied field of 0.5 V / m. A modulation depth of 60% was observed at the half-maximum bias point ͑ = 633 nm͒.…”

“…Then simulation was done using the known electro-optic coefficient r 11 = 770 pm/ V at 633 nm. 11 When the device was biased at the half-maximum point of the transmission peak, a modulation depth as high as 80% for a low applied field ͑0.5 V / m͒ was obtained at 633 nm. The modulation depth at 750 nm under similar conditions was about 40%.…”

High-Quality Organic Single Crystalline Thin Films for Nonlinear Optical Applications by Vapor Growth

“…Nonlinear optical chromophores with large molecular hyperpolarizability β have been identified during the past decade. − However, there are only a few reports on the successful development of reliable and stable crystalline thin films with large macroscopic nonlinearity. − For integrated optics, one is interested in fabrication techniques for organic nonlinear optical crystalline films with a thickness in the range of 0.2−10 μm and a large area. This is because recently developed long π-conjugated chromophores with large dipole moments usually exhibit a high tendency for the antiparallel dipole−dipole aggregation, leading to centrosymmetric arrangements, and most of the crystals grown exhibit three-dimensional (3D) bulk morphology.…”