We present a plenoptic time-of-flight pixel design using grating arrays with inverse-designed passive photonic power combining to achieve scalable signal-to-noise ratio. Experimental results are presented as a proof-o...
详细信息
In this study, we derive a grating equation for the two-cascaded virtually imaged phased array (VIPA), which provides valuable insights for the design and construction of spectrometers and other devices utilizing the ...
详细信息
Metalenses based on all-dielectric metasurfaces plays an important role in microscopic imaging, machine vision and holographic imaging. Chromatic aberration correction is an important factor that imaging devices. In t...
详细信息
In order to meet the standardized design requirements of lenses, a lens aided design system based on parametric modeling is designed. The development of this system makes full use of computer-aided design technology t...
详细信息
The inherent dispersion of the glass utilized in lens construction necessitates applying various techniques to eliminate aberrations. Prior research has traditionally concentrated on single-spectrum applications, targ...
详细信息
ISBN:
(纸本)9781510673571;9781510673564
The inherent dispersion of the glass utilized in lens construction necessitates applying various techniques to eliminate aberrations. Prior research has traditionally concentrated on single-spectrum applications, targeting either the visible or infrared region. In this study, we designed and conducted numerical simulations of an achromatic lens designed for the UV-visible spectrum, employing unconventional materials such as silicon nitride (Si3N4) and aluminum oxide (Al2O3). The Si3N4 serves as the equivalent of Flint glass, offering a high refractive index and a relatively lower Abbe number. Its transparent window extends from the deep ultraviolet (UV) range and covers the entire visible spectrum. Conversely, Al2O3 is well-suited for use as crown glass, given its lower refractive index than Si3N4 and a higher Abbe number, and Al2O3 remains transparent from the UV region till the mid-infrared region. Combining these two materials should yield an achromatic lens with eliminated chromatic aberrations. Therefore, lens design started with the achromat equations, and further optimizations were done using Opticstudio Zemax, a ray tracing software. The Seidel diagram and focal variation graph offered realistic validation of our study's complete reduction of aberrations, and good focusing efficiency was achieved. The operational wavelengths in our study encompass a range from 360 nm to 633 nm, encompassing both the ultraviolet and visible spectra. Our work may apply to futuristic broadband imaging systems, collimators, and spectrometers.
With the widespread adoption of mobile networks, the demand for onboard aircraft network connectivity is growing at a significant pace. However, existing solutions for this air-to-ground (ATG) communication scenario, ...
详细信息
This study investigated a new ultraviolet UV phototransistor structure employing SnO2 thin-film and plasmonic Ag nanoparticles (NPs). The main objective is to enhance the photogeneration capability in the active layer...
详细信息
The capability to simultaneously interfere with multiple hostile targets is of great importance for modern electronic jammers. To allow the radio frequency amplifier to operate at maximum efficiency and avoid nonlinea...
详细信息
Kepler is deploying a commercial optical space data relay network providing real-time, high-bandwidth internet connectivity to LEO space, air, and ground users. The Kepler Network will be compatible with the SDA Optic...
详细信息
In response to the problem that the leader's dominant role in the leader follower formation control algorithm can easily lead to the failure of formation system control, in this paper, the artificial potential fie...
详细信息
暂无评论