Modified theory of photoinduced molecular polar alignment in azo polymers
Optics Letters, Vol. 25, Issue 5, pp. 329-331 (2000)
http://dx.doi.org/10.1364/OL.25.000329
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Abstract
An improvement on the simplified theory of all-optical poling [Chem. Phys. Lett. 286, 415 (1998)] is proposed. In this improvement the influence of the cis isomer is taken into account in the process of photoinduced molecular polar alignment. An analytical expression for the induced polar order in the steady-state regime is derived. This expression shows that, although the contribution to the photoinduced second-order susceptibility from the cis state itself can be neglected, the population of the cis state plays an important role. This result suggests the possibility that one can improve the induced polar order by increasing the poling temperature, so that thermal-assisted optical poling can be explained.
© 2000 Optical Society of America
[Optical Society of America ]
OCIS Codes
(190.2620) Nonlinear optics : Harmonic generation and mixing
(190.4400) Nonlinear optics : Nonlinear optics, materials
(230.4320) Optical devices : Nonlinear optical devices
Citation
Gang Xu, Xuchun Liu, Jinhai Si, Peixian Ye, Zhao Li, and Yuquan Shen, "Modified theory of photoinduced molecular polar alignment in azo polymers," Opt. Lett. 25, 329-331 (2000)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-25-5-329
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