Multilevel diffractive lenses with a small -number (#≤10) and a high diffraction efficiency can shorten optical system length and improve system detection accuracy. The diffraction efficiency of the multilevel diffractive lens fabricated by the high-precision, low-cost nanofabrication method proposed in this paper reaches 90% of the maximum theoretical diffraction efficiency. Furthermore, the spectral imaging characteristics of the diffractive lens are theoretical analysis and experimental verification. The results show that the measured spectral resolution is 1.5 nm and the spatial resolution is 116 lp/mm, respectively, which are close to the theoretical analysis values.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1364/OE.545231 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Multilevel diffractive lenses with a small -number (#≤10) and a high diffraction efficiency can shorten optical system length and improve system detection accuracy. The diffraction efficiency of the multilevel diffractive lens fabricated by the high-precision, low-cost nanofabrication method proposed in this paper reaches 90% of the maximum theoretical diffraction efficiency. Furthermore, the spectral imaging characteristics of the diffractive lens are theoretical analysis and experimental verification.
View Article and Find Full Text PDFEffect of dynamic high pressure microfluidization on pasting, gelling and rheological properties of starch composite with β-glucan both from highland barley.
Int J Biol Macromol
January 2025
Institute of Food and Nutrition Development, Ministry of Agriculture and Rural Affairs, Beijing 100081, China. Electronic address:
The objective of this study was to investigate the effect of β-glucan on the pasting, gelling, rheological properties, and multi-level structures of the highland barley (HB) starch after dynamic high pressure microfluidization (DHPM) treatment, exploring the inhibition mechanisms of starch retrogradation by endogenous β-glucan after DHPM. DHPM treatment led to a decrease in the viscosity (K values from 161.1 to 54.
View Article and Find Full Text PDFSingle-Component Coordination Polymers with Excitation Wavelength- and Temperature-Dependent Long Persistent Luminescence toward Multilevel Information Security.
Inorg Chem
December 2024
Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province and State Key Laboratory of Applied Organic Chemistry, Frontiers Science Center for Rare Isotope, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China.
Metal-organic hybrid materials with long persistent luminescence (LPL) properties have attracted a lot of attention due to their enormous potential for applications in information encryption, anticounterfeiting, and other correlation fields. However, achieving multimodal luminescence in a single component remains a significant challenge. Herein, we report two two-dimensional LPL coordination polymers: {[Zn(BA)(BIMB)]·2HO} () and {[Cd(BA)(BIMB)]·3HO} () (BIMB = 1,3-bis(imidazol-1-yl)benzene; BA = butanedioic acid).
View Article and Find Full Text PDFMetasurface with all-optical tunability for spatially-resolved and multilevel thermal radiation.
Nanophotonics
April 2024
Laser Micro/Nano-Fabrication Laboratory, School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China.
Manipulating the thermal emission in the infrared (IR) range significantly impacts both fundamental scientific research and various technological applications, including IR thermal camouflage, information encryption, and radiative cooling. While prior research has put forth numerous materials and structures for these objectives, the significant challenge lies in attaining spatially resolved and dynamically multilevel control over their thermal emissions. In this study, a one-step ultrafast laser writing technique is experimentally demonstrated to achieve position-selective control over thermal emission based on the phase-change material GeSbTe (GST).
View Article and Find Full Text PDFFiber-form optics extends the high-resolution tomographic imaging capabilities of optical coherence tomography (OCT) to the inside of the human body, i.e., endoscopic OCT.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!