Jonathan E. Slagle
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Intrinsic defects (vacancies and antisites) in neutron irradiated CdSiP2 crystals Open
Cadmium silicon phosphide (CdSiP2) is a nonlinear optical material widely used in optical parametric oscillators. Intrinsic defects (vacancies and antisites) are responsible for unwanted broad optical absorption bands in these crystals tha…
Thermoplasmonic‐Controlled Optical Filters Based on the Combination of Chiral Liquid Crystals and Metasurfaces Open
A novel class of photonic filters is obtained by integrating a large‐area optical plasmonic metasurface with a broadband cholesteric liquid crystal (CLC) Bragg reflector. By utilizing the photo‐thermal characteristics of the optical plasmo…
Liquid crystalline geometrical phase Alvarez-Lohmann lenses Open
Thin-film LC based geo-phase optics have previously been demonstrated to drastically reduce size, weight, and power requirements for large-aperture optical systems while providing non-mechanical functionality for discrete values – for exam…
Deep selenium donors in ZnGeP2 crystals: An electron paramagnetic resonance study of a nonlinear optical material Open
Zinc germanium diphosphide (ZnGeP2) is a ternary semiconductor best known for its nonlinear optical properties. A primary application is optical parametric oscillators operating in the mid-infrared region. Controlled donor doping provides …
Residual optical absorption from native defects in CdSiP<sub>2</sub> crystals Open
CdSiP 2 crystals are used in optical parametric oscillators to produce tunable output in the mid-infrared. As expected, the performance of the OPOs is adversely affected by residual optical absorption from native defects that are unintenti…
Thermoplasmonic Controlled Optical Absorber Based on a Liquid Crystal Metasurface Open
Metasurfaces can be realized by organizing subwavelength elements (e.g., plasmonic nanoparticles) on a reflective surface covered with a dielectric layer. Such an array of resonators, acting collectively, can completely absorb the resultin…
Intrinsic point defects (vacancies and antisites) in CdGeP2 crystals Open
Cadmium germanium diphosphide (CdGeP2) crystals, with versatile terahertz-generating properties, belong to the chalcopyrite family of nonlinear optical materials. Other widely investigated members of this family are ZnGeP2 and CdSiP2. The …
White light thermoplasmonic activated gold nanorod arrays enable the photo-thermal disinfection of medical tools from bacterial contamination Open
AuNRs immobilized on rigid substrates are utilized as thermo-optical transducers under white light irradiation. The achieved temperature increase is suitable for producing photo-thermal disinfection of surgical tools contaminated with E. c…
Impact of the Liquid Crystal Director Twisting on Two-Beam Energy Exchange in a Hybrid Photorefractive Inorganic-Liquid Crystal Cell Open
We studied the energy transfer between light beams on the director grating in a hybrid photorefractive liquid crystal (LC) cell assuming the propagation of light waves in the cell to be in the Mauguin regime. This approach makes it possibl…
2 × 2 anisotropic transfer matrix approach for optical propagation in uniaxial transmission filter structures Open
Multi-layered metamaterial structures show promise in a wide variety of optical applications such as superlenses, electromagnetic cloaking, tunable filters, sensors, and spatial light modulators. Optical transmission analysis of multilayer…
Artificial neural network discovery of a switchable metasurface reflector Open
Optical materials engineered to dynamically and selectively manipulate electromagnetic waves are essential to the future of modern optical systems. In this paper, we simulate various metasurface configurations consisting of periodic 1D bar…