Hydrogel-based diffractive optical elements (hDOEs) using rapid digital photopatterning.
Sign Up to like & getrecommendations! Published in 2021 at "Advanced optical materials"
DOI: 10.1002/adom.202001217
Abstract: Hydrogels, due to their optical transparency and biocompatibility, have emerged as an excellent alternative to conventional optical materials for biomedical applications. Advances in microfabrication techniques have helped convert conventional hydrogels into optically functional materials such… read more here.
Keywords: hydrogel based; digital photopatterning; optical elements; diffractive optical ... See more keywords
Scanning of skin gloss by a diffractive optical element-based handheld glossmeter
Sign Up to like & getrecommendations! Published in 2018 at "Optical Review"
DOI: 10.1007/s10043-018-0462-z
Abstract: Skin specular gloss (referred to as “gloss’’) determination is important in dermatology and cosmetic industry as it gives an indication of the skin health and beauty. Its accurate determination is, therefore, necessary. Commercially available glossmeters… read more here.
Keywords: glossmeter; diffractive optical; skin gloss; gloss ... See more keywords
Optimal design of multilayer diffractive optical element in wide angle of incidence
Sign Up to like & getrecommendations! Published in 2021 at "Optics Communications"
DOI: 10.1016/j.optcom.2021.127340
Abstract: Abstract We propose a method for designing the multilayer diffractive optical elements (MLDOEs) to improve the polychromatic integral diffraction efficiency (PIDE) in wide angle of incidence. By comparing and analyzing the characteristic angle weighted PIDE… read more here.
Keywords: incidence; angle; wide angle; diffractive optical ... See more keywords
Fast and robust method for flow analysis using GPU assisted diffractive optical element based background oriented schlieren (BOS)
Sign Up to like & getrecommendations! Published in 2020 at "Optics and Lasers in Engineering"
DOI: 10.1016/j.optlaseng.2019.105908
Abstract: Abstract The paper introduces a method for studying flow dynamics using diffractive optical element based background-oriented schlieren (BOS). Our method relies on fringe demodulation using root multiple signal classification technique which provides high robustness against… read more here.
Keywords: diffractive optical; element based; based background; method ... See more keywords
Thermally Triggered Multilevel Diffractive Optical Elements Tailored by Shape-Memory Polymers for Temperature History Sensors.
Sign Up to like & getrecommendations! Published in 2023 at "ACS applied materials & interfaces"
DOI: 10.1021/acsami.2c18901
Abstract: The morphological transitions induced by external stimuli in shape-memory polymers (SMPs) can be exploited with the real-time response of far-field diffraction patterns in diffractive optical elements (DOEs). In this paper, we combine the temperature characteristics… read more here.
Keywords: temperature history; diffractive optical; temperature; shape memory ... See more keywords
Roller nanoimprint lithography for low-cost nanoscale random lattice diffractive optical elements
Sign Up to like & getrecommendations! Published in 2020 at "AIP Advances"
DOI: 10.1063/1.5137755
Abstract: In this paper, effective fabrication of high-resolution diffractive optical elements on a polymer substrate is demonstrated using roller nanoimprint lithography. A nanoscale diffraction grating mold, which can generate a random laser pattern, is fabricated by… read more here.
Keywords: diffractive optical; optical elements; fabrication; roller nanoimprint ... See more keywords
Design of high-efficiency diffractive optical elements towards ultrafast mid-infrared time-stretched imaging and spectroscopy
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Modern Optics"
DOI: 10.1080/09500340.2017.1386332
Abstract: Abstract Ultrafast time stretch imaging offers unprecedented imaging speed and enables new discoveries in scientific research and engineering. One challenge in exploiting time stretch imaging in mid-infrared is the lack of high-quality diffractive optical elements… read more here.
Keywords: diffractive optical; time; mid infrared; spectroscopy ... See more keywords
Hybrid ray-tracing/Fourier optics method to analyze multilayer diffractive optical elements.
Sign Up to like & getrecommendations! Published in 2022 at "Applied optics"
DOI: 10.1364/ao.456055
Abstract: The performance (paraxial phase delay) of conventional diffractive optical elements is generally analyzed using the analytical scalar theory of diffraction, based on thin-element approximation (TEA). However, the high thickness of multilayer diffractive optical elements (MLDOEs)… read more here.
Keywords: ray tracing; diffractive optical; optics; optical elements ... See more keywords
Simulating multilevel diffractive optical elements on a spatial light modulator.
Sign Up to like & getrecommendations! Published in 2022 at "Applied optics"
DOI: 10.1364/ao.469511
Abstract: Multilevel diffractive optical elements (DOEs) offer a solution to approximate complex diffractive phase profiles in a stepwise manner. However, while much attention has focused on efficiency, the impact on modal content in the context of… read more here.
Keywords: diffractive optical; light modulator; spatial light; optical elements ... See more keywords
Design of two-dimensional diffractive optical elements for beam shaping of multicolor light-emitting diodes.
Sign Up to like & getrecommendations! Published in 2018 at "Applied optics"
DOI: 10.1364/ao.57.002653
Abstract: To achieve a cellular network in visible light communication, the illumination areas covered by red, green, and blue light-emitting diodes (LEDs) forming a white LED should be of the same size with uniform intensity distribution.… read more here.
Keywords: dimensional diffractive; diffractive optical; two dimensional; emitting diodes ... See more keywords
Optimization method of multilayer diffractive optical elements with consideration of ambient temperature.
Sign Up to like & getrecommendations! Published in 2018 at "Applied optics"
DOI: 10.1364/ao.57.008861
Abstract: A method for the optimal design of multilayer diffractive optical elements (MLDOEs) with consideration of ambient temperature is presented to improve the image quality over the entire temperature range. The relationship between diffraction efficiency and… read more here.
Keywords: temperature; diffractive optical; optical elements; multilayer diffractive ... See more keywords