40 citations · 200 across the 15 of their papers we have counts for
15 papers
Low-cost automated spin coater and thermal annealer for additive prototyping of multilayer Bragg reflectors
Nathan J. Dawson, Yunli Lu, Zoe Lowther +4
We present and implement a design for an automated system that fabricates multilayer photonic crystal structures. The device is constructed with low-cost materials. A polystyrene/c…
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…
The second hyperpolarizability of systems described by the space-fractional Schrodinger equation
Nathan J. Dawson, Onassis Nottage, Moussa Kounta
The static second hyperpolarizability is derived from the space-fractional Schrödinger equation in the particle-centric view. The Thomas-Reiche-Kuhn sum rule matrix elements and th…
Static hyperpolarizability of space-fractional quantum systems
Nathan J. Dawson
The nonlinear response is investigated for a space-fractional quantum mechanical system subject to a static electric field. Expressions for the polarizability and hyperpolarizabili…
Polynomial potentials determined from the energy spectrum and transition dipole moments that give the largest hyperpolarizabilities
Nathan J. Dawson, Mark G. Kuzyk
We attempt to get a polynomial solution to the inverse problem, that is, to determine the form of the mechanical Hamiltonian when given the energy spectrum and transition dipole mo…
Lowest-order relativistic corrections to the fundamental limits of nonlinear-optical coefficients
Nathan J. Dawson
The effects of small relativistic corrections to the off-resonant polarizability, hyperpolarizability, and second hyperpolarizability are investigated. Corrections to linear and no…
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…