Zinc Oxide (ZnO) is a long-studied material that possesses properties well-regarded for their applications in photonics, optoelectronics, and nanoscience. While much research exists detailing conventional deposition (i.e. vapor phase, sol gel) and post processing (thermal) techniques, the effects of photonic annealing techniques such as intense pulsed light annealing (IPLA) on thin film of ZnO remain less explored. This research effort examines the outcomes of applying IPLA to ZnO in various scenarios, including inkjet printed and spin coated films, and with inks prepared from nanoparticle suspensions and metal-organic salt solutions. The findings indicate that IPLA can create film morphologies distinct from those achievable with conventional thermal annealing methods. The study employs a range of material assessment techniques including the electronic characterization of films, scanning and transmission electron microscopy, and analysis using FT-IR and UV-Vis spectroscopy, to elucidate the impact of IPLA on ZnO films under diverse conditions.

Multiferroic magnetoelectric composite materials are studied due to their potential applications in sensors, actuators, and other electronic devices. Inkjet printing is a direct write additive manufacturing method capable of fabricating structures on the micrometer scale by depositing solutions containing functional nanomaterials. In this study, finite element simulations were used to investigate the response of these materials under different magnetic and electric fields, revealing that the magnetoelectric coupling coefficient of the composites is highly dependent on the orientation of the magnetic and electric fields with respect to the composite material. The simulations also showed that the composites exhibit a strong nonlinear behavior, which is attributed to the magnetostrictive properties in the cobalt ferrite phase. Experimental results are compared to validate numerical simulations. Further simulation experiments were undertaken considering the capabilities of inkjet printing additive manufacturing to inform the fabrication of electronic devices.

Cadmium silicon phosphide, CdSiP2 (CSP), crystals have good nonlinear optical properties resulting in their use in optical parametric generation (OPO and OPA) of mid-infrared light. One common limitation on the performance of OPO materials is residual optical absorption which often results from point defects formed during crystal growth. Electron paramagnetic resonance (EPR) is a powerful technique for identifying and tracking point defects in materials. By correlating behaviors of native point defects exposed to 1064 nm light using EPR with changes in optical absorption bands, models are proposed for three of the observed broad optical absorption bands.

The coded-aperture imaging technique needs only a thin coded mask to encode image, which enable to build an ultra-thin imaging system. However, the limited dynamic range of the image sensor and the diffraction effect degrades the reconstructed images quality. Here, we proposed an integrated ultra-thin coded aperture lensless camera. We take Fresnel zone plates as coded mask, then the incident light could be encoded into a hologram-like pattern, and the image can be holographic reconstruction. A deep neural network is also trained for rapid and high-quality reconstruction. To improve the dynamic range, differential-enhancement method is used by capture two complementary encoding images. The proposed integrated ultra-thin camera is expected to be applied in unconscious payment, identification and authentication, autonomous cars, etc.

In this presentation, we will delve into the evolution of volume holographic optical elements (VHOEs), discussing their development alongside calculation models such as the VOHIL model. We will unveil a novel visualization scheme rooted in this model, aimed at elucidating Bragg diffraction within intricate volume holograms. Lastly, we will showcase the latest advancements in the application of VHOEs, particularly in the realm of lightguide-based Augmented Reality (AR) and Mixed Reality (MR) glasses.

The CGH technique is crucial for MR displays, resolving the VAC issue with three-dimensional image generation. However, drawbacks include excessive device volume and speckle noise from coherent light. The lightguides with VHOE couplers and LED light source are employed to address these issues. In this study, we employed an LED as the light source to reduce the speckle noise. The volume holographic optical elements (VHOEs) as the in-coupler and out-coupler are designed as bandpass filters. The VHOEs filtered the CGH display's effective wavelength to inhibit image degradation caused by dispersion. Furthermore, the aberration caused by the lightguide was analyzed and compensated in this study. The design method, simulation results, and experimental results are discussed in this work.

Conventional calculation of performance based on M/# assumes the diffraction efficiency as a simple function of the material thickness. It ignores the three-dimensional distribution of refractive index, which contributes to different diffraction efficiency, and always leads to over-evaluation of the storage capacity. Therefore, we proposed an efficiency coefficient to calculate the diffraction efficiency per refractive index consumption.

Augmented Reality (AR) and Mixed Reality (MR) glasses stand as pivotal technological advancements in contemporary society. However, maintaining a compact and lightweight design while ensuring high-quality image viewing remains a persistent challenge. Researchers endeavor to overcome the intricate optical hurdles associated with these glasses. They suggest that waveguides incorporating two in- and out-coupling Volume Holographic Optical Elements (VHOEs) has surfaced as a promising approach, addressing these requirements and providing high see-through transmittance due to Bragg selectivity. Nonetheless, in the case of a full-color VHOE-based waveguide, the crosstalk between the RGB gratings of three primary colors within a waveguide results in the ghost images that diminish image quality. In this paper, we propose a method to eliminate ghost images and offer precise simulations aligned with experimental observations.