Home Light • Download Multiphoton and Light Driven Multielectron Processes in by Y. C. Liang, D. A. Oulianov, A. S. Dvornikov (auth.), PDF

Download Multiphoton and Light Driven Multielectron Processes in by Y. C. Liang, D. A. Oulianov, A. S. Dvornikov (auth.), PDF

By Y. C. Liang, D. A. Oulianov, A. S. Dvornikov (auth.), Fran├žois Kajzar, M. Vladimir Agranovich (eds.)

A cutting-edge description of natural picture- and electroactive molecules and their functional purposes. issues coated contain molecular layout and synthesis of hugely gentle delicate molecules and phenomena linked to electron-photon interplay in natural molecules: nonlinear beam propagation, photorefractivity, multiphoton excitations and absorption, cost photogeneration and mobility, picture- and electroluminescence, photochromism and electrochromism, natural synthesis, fabric engineering and processing. purposes are addresses: optical information garage, LEDs, optical signalling processing, optical strength limiters.

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Read Online or Download Multiphoton and Light Driven Multielectron Processes in Organics: New Phenomena, Materials and Applications: Proceedings of the NATO Advanced Research Workshop on Multiphoton and Light Driven Multielectron Processes in Organics: New Phenomena, Materials a PDF

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Extra info for Multiphoton and Light Driven Multielectron Processes in Organics: New Phenomena, Materials and Applications: Proceedings of the NATO Advanced Research Workshop on Multiphoton and Light Driven Multielectron Processes in Organics: New Phenomena, Materials a

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I. KOVSH, R. NEGRES, D. J. HAGAN, V. DUBIKOVSKY and K. BELFIELD' School of Optics/CREOL, University of Central Florida (*Deprtment of Chemistry), Orlando, FL, USA Abstract Progress in making effective optical limiting devices requires careful characterization of the material nonlinearities as well as modeling of the propagation of optical beams through the material. We present a method to study the spectral properties of the nonlinear response as well as the results of modeling nanosecond pulse propagation in optically absorbing media.

The acoustic transit times in cases (i) and (ii) are 'rae == 4 ns and 20 ns respectively. The sample is I mm thick in each case. Figure 4 shows the thermally induced refractive index change in case (i) after the laser pulse passes through the sample. The full modeling using the acoustic equation coupled with propagation is shown on the left, while the thermal lensing approximation is applied on the right. Although this approximation ignores the small index disturbances on the wings of the 46 pulse, which are due to the acoustic wave propagation, it predicts the changes of the refractive index close to the axis reasonably well, and this is where most of the beam energy is concentrated.

OPTICAL LIMITING: CHARACTERIZATION & NUMERICAL MODELING E. W. VAN STRYLAND, D. I. KOVSH, R. NEGRES, D. J. HAGAN, V. DUBIKOVSKY and K. BELFIELD' School of Optics/CREOL, University of Central Florida (*Deprtment of Chemistry), Orlando, FL, USA Abstract Progress in making effective optical limiting devices requires careful characterization of the material nonlinearities as well as modeling of the propagation of optical beams through the material. We present a method to study the spectral properties of the nonlinear response as well as the results of modeling nanosecond pulse propagation in optically absorbing media.

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