Dodd Gray
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View article: Multi-scale second harmonic generation microscopy of ferroelectric domains in x-cut thin-film lithium niobate
Multi-scale second harmonic generation microscopy of ferroelectric domains in x-cut thin-film lithium niobate Open
Thin-film lithium niobate (TFLN) is a widely used platform for nonlinear frequency conversion, as its strong nonlinear susceptibility and enhanced modal confinement intensify nonlinear interactions. Frequency doubling from NIR to visible w…
View article: Magic Cancellation Point for Vibration Resilient Ultrastable Microwave Signal
Magic Cancellation Point for Vibration Resilient Ultrastable Microwave Signal Open
Photonically-synthesized microwave signals have demonstrated the ability to surpass the phase-noise performance achievable by traditional means of RF signal generation. However, in order for microwave-photonic oscillators to truly replace …
View article: Thermal enhancement of defect motion for optimizing periodic poling of x-cut thin-film lithium niobate
Thermal enhancement of defect motion for optimizing periodic poling of x-cut thin-film lithium niobate Open
Patterning of stable, spatially tailored ferroelectric domains in thin-film lithium niobate enables efficient nonlinear optical interactions through quasi-phase matching. The engineering of domain structure is limited by the uncontrolled d…
View article: Inverse design for waveguide dispersion with a differentiable mode solver
Inverse design for waveguide dispersion with a differentiable mode solver Open
Inverse design of optical components based on adjoint sensitivity analysis has the potential to address the most challenging photonic engineering problems. However, existing inverse design tools based on finite-difference-time-domain (FDTD…
View article: Inverse Design for Waveguide Dispersion with a Differentiable Mode Solver
Inverse Design for Waveguide Dispersion with a Differentiable Mode Solver Open
Inverse design of optical components based on adjoint sensitivity analysis has the potential to address the most challenging photonic engineering problems. However existing inverse design tools based on finite-difference-time-domain (FDTD)…
View article: Optical Atomic Clock Interrogation Via an Integrated Spiral Cavity Laser
Optical Atomic Clock Interrogation Via an Integrated Spiral Cavity Laser Open
Optical atomic clocks have demonstrated revolutionary advances in precision timekeeping, but their applicability to the real world is critically dependent on whether such clocks can operate outside a laboratory setting. The challenge to cl…
View article: Ultralow noise microwave synthesis via difference frequency division of a Brillouin resonator
Ultralow noise microwave synthesis via difference frequency division of a Brillouin resonator Open
Low phase noise microwave oscillators are at the center of a multitude of applications that span the gamut of photonics and electronics. Within this space, optically derived approaches to microwave frequency synthesis are particularly comp…
View article: Ultralow Noise Microwave Synthesis Via Difference Frequency Division of a Brillouin Resonator
Ultralow Noise Microwave Synthesis Via Difference Frequency Division of a Brillouin Resonator Open
Low phase noise microwave oscillators are at the center of a multitude of applications that span the gamut of photonics and electronics. Within this space, optically-derived approaches to microwave frequency synthesis are particularly comp…
View article: Degenerate optical parametric amplification in CMOS silicon
Degenerate optical parametric amplification in CMOS silicon Open
Silicon is a common material for photonics due to its favorable optical properties in the telecom and mid-wave IR bands, as well as compatibility with a wide range of complementary metal–oxide semiconductor (CMOS) foundry processes. Crysta…
View article: Degenerate optical parametric amplification in CMOS silicon
Degenerate optical parametric amplification in CMOS silicon Open
Silicon is a common material for photonics due to its favorable optical properties in the telecom and mid-wave IR bands, as well as compatibility with a wide range of complementary metal-oxide semiconductor (CMOS) foundry processes. Crysta…
View article: Computational polarized Raman microscopy on sub-surface nanostructures with sub-diffraction-limit resolution
Computational polarized Raman microscopy on sub-surface nanostructures with sub-diffraction-limit resolution Open
Raman microscopy with resolution below the diffraction limit is demonstrated on sub-surface nanostructures. Unlike most other modalities for nanoscale measurements, our approach is able to image nanostructures buried several microns below …
View article: Thermo-Optic Multistability and Relaxation in Silicon Microring Resonators with Lateral Diodes
Thermo-Optic Multistability and Relaxation in Silicon Microring Resonators with Lateral Diodes Open
We demonstrate voltage-tunable thermo-optic bi- and tri-stability in silicon\nphotonic microring resonators with lateral p-i-n junctions and present a\ntechnique for characterizing the thermo-optic transient response of integrated\noptical…
View article: Photonic Readout of Superconducting Nanowire Single Photon Counting Detectors
Photonic Readout of Superconducting Nanowire Single Photon Counting Detectors Open
Scalable, low power, high speed data transfer between cryogenic (0.1–4 K) and room temperature environments is essential for the realization of practical, large-scale systems based on superconducting technologies. A promising approach to o…
View article: Controlling the dopant profile for SRH suppression at low current densities in λ ≈ 1330 nm GaInAsP light-emitting diodes
Controlling the dopant profile for SRH suppression at low current densities in λ ≈ 1330 nm GaInAsP light-emitting diodes Open
The quantum efficiency of double hetero-junction light-emitting diodes (LEDs) can be significantly enhanced at low current density by tailoring the spatial profile of dopants to suppress Shockley–Read–Hall recombination. To demonstrate thi…
View article: Readout of Superconducting Nanowire Single Photon Detectors through Forward Biased Optical Modulators
Readout of Superconducting Nanowire Single Photon Detectors through Forward Biased Optical Modulators Open
Scalable, high speed data transfer between cryogenic (0.1-4 K) and room temperature environments is instrumental in a broad range of fields including quantum computing, superconducting electronics, single photon imaging and space-based com…
View article: Conditions for Parametric and Free-Carrier Oscillation in Silicon Ring Cavities
Conditions for Parametric and Free-Carrier Oscillation in Silicon Ring Cavities Open
We model optical parametric oscillation in ring cavities with two-photon\nabsorption, focusing on silicon at 1.55$\\mu$m. Oscillation is possible if\nfree-carrier absorption can be mitigated; this can be achieved using carrier\nsweep-out i…
View article: Conditions for parametric and free-carrier oscillation in SOI ring cavities with active carrier removal
Conditions for parametric and free-carrier oscillation in SOI ring cavities with active carrier removal Open
We model optical parametric oscillation in ring cavities, focusing on silicon at 1.55μm, as a potential frequency-comb source for microwave and terahertz generation. Oscillation is possible if free-carrier absorption can be mitigated; this…