Monte Carlo simulation of two-photon induced molecular orientation in solid polymer films

Grzegorz Pawlik; Antoni C. Mitus; Francois Kajzar

doi:10.1117/12.683863

14 September 2006 Monte Carlo simulation of two-photon induced molecular orientation in solid polymer films

Grzegorz Pawlik, Antoni C. Mitus, Francois Kajzar

Proceedings Volume 6330, Nonlinear Optical Transmission and Multiphoton Processes in Organics IV; 633003 (2006) https://doi.org/10.1117/12.683863
Event: SPIE Optics + Photonics, 2006, San Diego, California, United States

Abstract

We present the first Monte Carlo simulations of the mechanism of two-photon induced molecular orientation by photo-isomerization of chromophores in solid polymer films. Two-photon absorption (TPA) occurring at intense laser pulses creates molecular orientation of photo-isomers proportionally to the square of the excitation intensity and the fourth power of the cosine of the angle θ between the TPA-transition dipole moment and the direction of the polarization of the excitation light. Photo-selection in cos⁴θ will result in the orientational redistribution of the chromophores differently from the well-known one-photon absorption process. Kinetic Monte Carlo model is proposed and illustrative "microscopic" results related to diffraction gratings inscription are presented.

Citation Download Citation

Grzegorz Pawlik, Antoni C. Mitus, and Francois Kajzar "Monte Carlo simulation of two-photon induced molecular orientation in solid polymer films", Proc. SPIE 6330, Nonlinear Optical Transmission and Multiphoton Processes in Organics IV, 633003 (14 September 2006); https://doi.org/10.1117/12.683863

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