17 papers · ranked by Valyu relevance
Marcella Salvatore, Francesco Reda, Fabio Borbone, I Komang Januariyasa + 3 more
'I Komang Januariyasa' 'Pasqualino Maddalena' 'Stefano Luigi Oscurato' 'Bożena Jarząbek'] The measurement of the refractive index typically requires the use of optical ellipsometry which, although potentially very accurate, is extremely sensitive to the structural properties of the sample and its theoretical modeling…
Sinong Zha, Dongling Li, Quan Wen, Ying Zhou + 2 more
'Ruffino Francesco'] Blazed gratings are the critical dispersion elements in spectral analysis instruments, whose performance depends on structural parameters and topography of the grating groove. In this paper, high diffraction efficiency silicon-blazed grating working at 800-2500 nm has been designed and fabricated.…
Jiafan Guan, Zhipeng Dong, Xianyue Deng, Yuzuru Takashima + 2 more
'Jonathan B. Hopkins' 'Robert M. Panas'] Phase light modulator (PLM) by MEMS mirror array operating in a piston-mode motion enables a high-speed diffractive beam steering in a random-access and flexible manner that makes a lidar system more intelligent and adaptive. Diffraction efficiency is determined by the range of…
Matija Lovšin, Dominik Brandl, Gašper Glavan, Inna A. Belyaeva + 6 more
'Luka Cmok' 'Lucija Čoga' 'Mitjan Kalin' 'Mikhail Shamonin' 'Irena Drevenšek-Olenik' 'Marcin Masłowski'] A surface relief grating with a period of 30 µm is embossed onto the surface of magnetoactive elastomer (MAE) samples in the presence of a moderate magnetic field of about 180 mT. The grating, which is represented…
Ye Wang, Yongyi Chen, Li Qin, Lijun Wang + 1 more
Since surface relief transmission gratings have very strict requirements on operators and use environment, according to the semiconductor laser external cavity spectral beam combining system, this paper proposes a design scheme for a semiconductor laser array spectral beam combining system based on the grating-external…
István Bányász, Gyula Nagy, Vladimir Havránek, Maria Cinta Pujol + 8 more
'Ágnes Nagyné Szokol' 'György Kármán' 'Robert Magnusson' 'István Rajta' 'Marco Pisco' 'Ilaria Rea' 'Genni Testa' 'Anna Chiara De Luca'] High diffraction efficiency optical transmission gratings with quasi-sinusoidal and saw-tooth surface relief profiles were fabricated in Bi12GeO20, Er: LiNbO3 and Er: Fe: LiNbO3…
Duy Thanh Cu, Tien Dat Pham, Vu Tuan Hung Le, Meng Chi Li + 4 more
'Hung Pin Chen' 'Chien Cheng Kuo' 'Konstantins Jefimovs' 'Jin-Cherng Hsu'] Diffraction gratings are becoming increasingly widespread in optical applications, notably in lasers. This study presents the work on the characterization and evaluation of Multilayer Dielectric Diffraction Gratings (MDG) based on the finite…
Wei Ting Chen, Joon-Suh Park, Justin Marchioni, Sophia Millay + 2 more
'Kerolos M. A. Yousef' 'Federico Capasso'] Dispersion results from the variation of index of refraction as well as electric field confinement in sub-wavelength structures. It usually results in efficiency decrease in metasurface components leading to troublesome scattering into unwanted directions. In this letter, by…
Mehmet Bütün, Sueda Saylan, Rana Asgari Sabet, Onur Tokel
Multilevel Volume Diffraction Gratings inside Silicon Authors: ['Mehmet Bütün' 'Sueda Saylan' 'Rana Asgari Sabet' 'Onur Tokel'] Silicon (Si)-based integrated photonics is considered to play a pivotal role in multiple emerging technologies, including telecommunications, quantum computing, and lab-chip systems. Diverse…
István Bányász, István Rajta, Vladimír Havránek, María Cinta Pujol + 3 more
Quasi-Sinusoidal Surface Relief Optical Transmission Gratings in Pyrex and IOG Glasses by Implantation with Oxygen and Nitrogen Ion Microbeams of the 5–6 MeV Energy Range Authors: ['István Bányász' 'István Rajta' 'Vladimír Havránek' 'María Cinta Pujol' 'Gábor Bazsó' 'György Kármán' 'Gyula Nagy'] A method for the…
Yue Pan, Zhenyu Wang, Xiping Xu, Liang Xu + 3 more
Title: Summary The diffraction characteristic of digital micromirror device (DMD) is the main factor to reduce the projection contrast, making it incompetent for DMD-based infrared scene projector (IRSP) to evaluate and test advanced infrared imaging systems in the hardware-in-the-loop (HWIL) simulation. In this paper…
Xingang Dai, Yanjun Hu, Bowen Niu, Qun Dai + 6 more
Diffractive optical elements (DOEs) are specialized optical components that manipulate light through diffraction for various applications, including holography, spectroscopy, augmented reality (AR) and virtual reality (VR), and light detection and ranging (LiDAR). The performance of DOEs is highly determined by…
Yitong Gu, Ning Wang, Haorui Shang, Fei Yu + 2 more
'Onofrio M. Maragò'] As a universal physical scheme, effective light couplings to waveguides favor numerous applications. However, the low coupling efficiency at wide angles prohibits this fundamental functionality and thus lowers the performance levels of photonic systems. As previously found, the transmission…
Bastian Schwarz, Gunnar Ritt, Bernd Eberle, Sylvain Girard
Recently, we developed a simple theoretical model for the estimation of the irradiance distribution at the focal plane of commercial off-the-shelf (COTS) camera lenses in case of laser illumination. The purpose of such a model is to predict the incapacitation of imaging sensors when irradiated by laser light. The model…
Jacob Engelberg, Uriel Levy
A plethora of metalenses and diffractive lenses (“flat lenses”) have been demonstrated over the years. Recently, attempts have been made to stretch their performance envelope, particularly in the direction of wide-band achromatic performance. While achromatic behavior has been demonstrated, showing an actual…
Roland Donatiello, Mustaqim Siddi Que Iskhandar, Md Kamrul Hasan, Philipp Kästner + 7 more
'Philipp Kästner' 'Muhammad Hasnain Qasim' 'Jiahao Chen' 'Shilby Baby' 'Basma Elsaka' 'Guilin Xu' 'Hartmut Hillmer' 'Qifa Zhou'] An innovative glass substrate surface technology including integrated micro-electro-mechanical systems (MEMS) is presented as an advanced light modulation, heat control, and energy management…
Reza Hekmati, John P. Hadden, Annie Mathew, Samuel G. Bishop + 2 more
Coupling light from a point source to a propagating mode is an important problem in nano-photonics and is essential for many applications in quantum optics. Circular “bullseye” cavities, consisting of concentric rings of alternating refractive index, are a promising technology that can achieve near-unity coupling into…