40 citations · 200 across the 15 of their papers we have counts for
10 papers · 1 filter
Homotopy analysis method applied to second-order frequency mixing in nonlinear optical dielectric media
Nathan J. Dawson, Moussa Kounta
The classical problem of three-wave mixing in a nonlinear optical medium is investigated using the homotopy analysis method (HAM). We show that the power series basis builds a gene…
Modeling off-resonant nonlinear-optical cascading in mesoscopic thin films and guest-host molecular systems
Nathan J. Dawson, James H. Andrews, Michael Crescimanno
A model for off-resonant microscopic cascading of (hyper)polarizabilities is developed using a self-consistent field approach to study mesoscopic systems of nonlinear polarizable a…
Coherent Perfect Rotation
Michael Crescimanno, Nathan J. Dawson, James H. Andrews
Two classes of conservative, linear, optical rotary effects (optical activity and Faraday rotation) are distinguished by their behavior under time reversal. In analogy with coheren…
The Local Field Factor and Microscopic Cascading: A Self-Consistent Method Applied to Confined Systems of Molecules
Nathan J. Dawson, James H. Andrews
We use a simplified self-consistent method to address nonlinear-optical cascading phenomena, which shows added microscopic cascading contributions in high-ordered nonlinear suscept…
Testing the diffusion hypothesis as a mechanism of self-healing in Disperse orange 11 doped in PMMA
Shiva K. Ramini, Nathan Dawson, Mark G. Kuzyk
In this work, we show that reversible photodegradation of Disperse Orange 11 doped in PMMA is not due to dye diffusion - a common phenomenon observed in many dye-doped polymers. Th…
Modeling the Mechanisms of the Photomechanical Response of a Nematic Liquid Crystal Elastomer
Nathan J. Dawson, Mark G. Kuzyk, Jeremy Neal +2
Recent studies of azo-dye doped liquid crystal elastomers show a strong photomechanical response. We report on models that predict experimental results that suggest photothermal he…
A quantum mechanical model of the upper bounds of the cascading contribution to the second hyperpolarizability
Nathan J. Dawson, Benjamin R. Anderson, Jennifer L. Schei +1
Microscopic cascading of second-order nonlinearities between two molecules has been proposed to yield an enhanced third-order molecular nonlinear-optical response. In this contribu…
Experimental Studies of the Mechanisms of Photomechanical Effects in a Nematic Liquid Crystal Elastomer in a Photomechanical Optical Device Geometry
Nathan J. Dawson, Mark G. Kuzyk, Jeremy Neal +2
Azo-dye-doped liquid crystal elastomers (LCEs) are known to show a strong photomechanical response. We report on experiments that suggest that photothermal heating is the underlyin…
A classical model of the upper bounds of the cascading contribution to the second hyperpolarizability
Nathan J. Dawson, Benjamin R. Anderson, Jennifer L. Schei +1
We investigate whether microscopic cascading of second-order nonlinearities of two molecules in the side-by-side configuration can lead to a third-order molecular nonlinear-optical…
Cascading of Liquid Crystal Elastomer Photomechanical Optical Devices
Nathan J. Dawson, Mark G. Kuzyk, Jeremy Neal +2
Photomechanical actuation is demonstrated in two coupled liquid crystal elastomer photomechanical optical devices (PODs) acting in series. The response function of an individual PO…