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Wavefront-aberration-tolerant diffractive deep neural networks using volume holographic optical elements [PDF]
Scientific ReportsAs the demand for computational performance in artificial intelligence (AI) continues to increase, diffractive deep neural networks (D2NNs), which can perform AI computing at the speed of light by repeated optical modulation with diffractive optical ...
Ikuo Hoshi +3 more
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Aberration‐Corrected Holographic Optical Elements Based on Consistent Shapes of Printed Hogels [PDF]
Advanced Photonics ResearchHerein, a holographic optical element (HOE) printing technique which maintains shapes and sizes of hogels across diverse focal positions, and aberration‐corrected HOEs which are fabricated by it are proposed. The proposed HOE printer employs nonpixelated
Jiwoon Yeom +4 more
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A Novel Approach for Measurement of Free-Form Optical Elements with Digital Holographic Microscopy [PDF]
Micromachines, 2022 Free-form optical elements face significant challenges in high-precision measurement due to their high complexity and non-rotational symmetry. Digital holographic microscopy (DHM), as one of the methods for the measurement of free-form optical elements ...
Xuhui Zhang +4 more
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Infrared Optical Vortices Generation with Holographic Optical Elements Recorded in Bayfol HX200 Photopolymer [PDF]
PhotonicsInfrared optical vortices are used in the field of optical communications at wavelengths around 1550 nm. A versatile method to generate them is with a Spatial Light Modulator (SLM); however, they are expensive devices and cannot be easily integrated into
Álvaro Paredes-Amorín +3 more
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Holographic optical scanning elements with minimum aberrations [PDF]
Applied Optics, 1988 An analytical method to design holographic optical elements for focusing laser scanners, especially disk scanners, with minimum aberrations and optimum scan line definition is reported. The results reveal that the focused spot constraint to a straight line is always astigmatic.
Herzig, Hans-Peter, Dändliker, René
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An efficient and wide angle coupling of light to a thin film holographic optical element [PDF]
Scientific ReportsIn this paper, a new method is proposed to achieve wide-angle and efficient coupling of light into a thin film, holographic optical element (HOE). The coupling is based on diffraction of light (the probe beam) by a holographic element.
Mei-Li Hsieh +3 more
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Holographic Optical Lenses Recorded on a Glassy Matrix-Based Photopolymer for Solar Concentrators
Photonics, 2021 Global warming is a very topical issue, therefore the search for new renewable energy sources is considered of fundamental importance. Among these, solar energy offers great possibilities considering that the amount of sunlight hitting the Earth ‘s ...
Maria Antonietta Ferrara +2 more
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Light: Advanced Manufacturing, 2022 This paper presents the results of 15 years of studies in the field of terahertz holography at the Novosibirsk free electron laser. They cover two areas: research on obtaining holographic images in the terahertz range and the use of diffractive optical ...
Yulia Choporova +2 more
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Journal of Information Display, 2022 We present a novel design of the lightguide type optical see-through Maxwellian near-eye display. The proposed display reconfigures vertically long input images to horizontally long output images for wide horizontal viewing-angle.
Woongseob Han +3 more
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Image Quality for Near-Eye Display Based on Holographic Waveguides
Applied Sciences, 2022 The paper analyzes the image quality in augmented reality display based on holographic waveguides. Brightness, brightness non-uniformity, image noise, etc., depend on the parameters of the waveguide substrate, the configuration, and the relief shape of ...
Artem Solomashenko +4 more
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