Search | Preprints.org

Preprint ARTICLE | doi:10.20944/preprints202308.1442.v1

Scalable Optical Convolutional Neural Network Based on Free-Space Optics Using Lens Arrays and a Spatial Light Modulator

Young-Gu Ju

Subject: Physical Sciences, Optics And Photonics Keywords: optical neural network; convolutional neural network; free-space optics; optical computer; smart pixels

Online: 22 August 2023 (03:47:05 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202403.1509.v1

Retinal Microcirculation Measurements in Response to Endurance Exercises Analysed by Adaptive Optics Retinal Camera

Maria Anna Żmijewska, Zbigniew M. Wawrzyniak, Maciej Janiszewski, Anna Zaleska-Żmijewska

Subject: Medicine And Pharmacology, Anatomy And Physiology Keywords: adaptive optics; retinal microcirculation; autoregulation; physical exercise; WRL

Online: 26 March 2024 (11:47:13 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202311.1923.v2

Coherent Off-Axis Terahertz Tomography with a Multi-Channel 2 Array and F-theta Optics

Karl Henrik May, Shiva Mohammadzadeh, Andreas Keil, Georg Von Freymann, Fabian Friederich

Subject: Physical Sciences, Applied Physics Keywords: Terahertz radiation; computed tomography; detector array; FMCW; acquisition speed; non-destructive testing; a priori information; off-axis measurement; f-theta lens; optics

Online: 13 December 2023 (05:08:53 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202304.1117.v1

Light Scattering Properties for Aggregates of Atmospheric Ice Crystals Within the Physical Optics Approximation

Dmitriy Timofeev, Natalia Kustova, Victor Shishko, Alexander Konoshonkin

Subject: Physical Sciences, Optics And Photonics Keywords: atmospheric particles, ice aggregates, light scattering, geometrical optics, physical optics

Online: 28 April 2023 (04:55:11 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202307.0691.v1

Retinal Photoreceptors and Microvascular Changes in the assessment of Diabetic Retinopathy Progression- a two-year follow-up study

Magdalena Kupis, Zbigniew M. Wawrzyniak, Jacek P. Szaflik, Anna Zaleska-Zmijewska

Subject: Medicine And Pharmacology, Ophthalmology Keywords: diabetic retinopathy, adaptive optics, rtx-1 technology, cone morphology, retinal microcirculation

Online: 11 July 2023 (08:11:09 CEST)

Show abstract| Download PDF| Share

Preprint COMMUNICATION | doi:10.20944/preprints202309.1784.v1

Study of Fiber Coupling Efficiency and Adaptive Optics Correction Technique in Atmospheric Slant-Range Channels

Xiaoying Ding, Xin Zhao, Tong Wang, Xiaoyun Wu, Shu Chen, Dewang Liu

Subject: Engineering, Other Keywords: laser communication in slant path; atmosphere turbulence; fiber coupling efficiency; adaptive optics; strehl ratio

Online: 27 September 2023 (04:20:52 CEST)

Show abstract| Download PDF| Share

Preprint REVIEW | doi:10.20944/preprints202305.2185.v1

How to Use Transformers for Transfer Learning?

Maryam Ebrahimzadeh, Hamidreza Asadi

Subject: Computer Science And Mathematics, Computer Science Keywords: optics; photonics; light, lasers; journal manuscripts; LaTeX template

Online: 31 May 2023 (07:39:24 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202312.1701.v1

Influence of Primary Coma on the Tightly Focusing Characteristics of Circular Basis Hybrid Order Poincaré Sphere Beams

Sushanta Kumar Pal, Rakesh Kumar Singh, Paramasivam Senthilkumaran

Subject: Physical Sciences, Optics And Photonics Keywords: Laser beam shaping; Debye-Wolf Integral; High numerical aperture optics; Hybrid order Poincaré sphere; Polarization; Singular optics

Online: 22 December 2023 (04:49:51 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202310.0486.v1

Optical Design of a Miniaturised Solar Magnetograph for Space Applications

Ariadna Calcines, Lucie M. Green, Alan Smith, David M. Long

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: solar magnetograph; space weather; space sciences; solar instrumentation; miniaturised optics

Online: 9 October 2023 (11:10:47 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202309.1382.v1

Links between Land Cover and in-Water Optical Properties in Four Optically Contrasting Swedish Bays

Susanne Kratzer, Martin Allart

Subject: Environmental And Earth Sciences, Environmental Science Keywords: Land Use and Land Cover (LULC); in-water optical properties; bio-optics; suspended particulate matter; coloured dissolved organic matter; chlorophyll-a; catchment area; water discharge; land-sea interactions.

Online: 20 September 2023 (10:48:00 CEST)

Show abstract| Download PDF| Supplementary Files| Share

Preprint ARTICLE | doi:10.20944/preprints202309.1315.v1

Polymer-Embedding Germanium Nanostrip Waveguide of High Polarization Extinction

Jinyuan Liu, Ziyang Zhang

Subject: Physical Sciences, Optics And Photonics Keywords: polymer waveguide technology; integrated optics; germanium waveguide; spectroscopic ellipsometry; hybrid integration

Online: 20 September 2023 (07:43:13 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202312.1200.v1

Topology Optimization Of A Single Point Diamond Turning Fixture For A Deployable Primary Mirror Telescope

Cyril Bourgenot, Valdis Krumins, David G. Bramall, Abdul M. Haque

Subject: Engineering, Mechanical Engineering Keywords: Topology Optimization; Single Point Diamond Machining; Deployable Optics; Additive Manufacturing; CubeSat; Lightweight; Earth Observation

Online: 15 December 2023 (14:19:46 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202403.0218.v1

Kinematics of balls and light versus theory of special relativity

Filip Dambi

Subject: Physical Sciences, Theoretical Physics Keywords: kinematic of balls; kinematics of light; geometrical optics; emission of light; dragging of light; propagation of light; reflection of light; speed of light; observation of light; dragging of light by moving mediums; Lorentz’ s transformation; special relativity

Online: 5 March 2024 (06:44:45 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202404.0463.v1

Graphene Oxide 2D Films for Integrated Thermo-Optic Devices

David Moss

Subject: Physical Sciences, Optics And Photonics Keywords: Integrated photonics; 2D material; thermo-optics

Online: 8 April 2024 (06:02:36 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202303.0540.v3

Sixteen Pairs of 4-Component Spinors for SL(4,C) and Four Types of Transformations with a Conjugate Space Which Has No Counterpart in SL(2,C)

Mehmet Ali Kuntman

Subject: Physical Sciences, Theoretical Physics Keywords: Lie Algebra; Lorentz group; SL(4,C); particle physics; polarization optics; nanoparticle interactions

Online: 25 September 2023 (09:34:12 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202404.0908.v1

Prediction for incremental damage on optics from final optics assembly in ICF high power laser facility

Xueyan Hu, Zhou Wei, Huaiwen Guo, Xiaoxia Huang, Bowang Zhao, Wei Zhong, Qihua Zhu, Zhifei Chen

Subject: Computer Science And Mathematics, Computer Vision And Graphics Keywords: Optics image processing; deep learning; ResNet-18; UNet++

Online: 15 April 2024 (17:53:44 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202404.1087.v1

Aluminium-Silicon Lightweight Thermal Management Alloys with Controlled Thermal Expansion

Peter Lewis, Andrew Tarrant, Andreas Frehn, Frtiz Grensing, James Nicholson, Nick Farrah, Martyn Acreman

Subject: Engineering, Metallurgy And Metallurgical Engineering Keywords: CTE; Heatsink; HIP; Hypereutectic; Mechanical Alloying; Metal Matrix Composite; MMC; Powder Metallurgy; Reflective Optics; Thermal Stability

Online: 17 April 2024 (08:07:25 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202405.0206.v1

Generation of Propagation-Dependent OAM Self-Torque with Chirped Spiral Gratings

Ruediger Grunwald, Mathias Jurke, Max Liebmann, Alexander Treffer, Martin Bock

Subject: Optics And Photonics, Physical Sciences Keywords: orbital angular momentum; vortex beams; singular optics; spectral anomalies; Gouy effect; spiral gratings; chirped gratings; spatial light modulator; angular velocity; self-torque

Online: 6 May 2024 (07:35:56 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202404.1398.v1

Bidirectional Optical Neural Networks Based on Free-Space Optics Using Lens Arrays and Spatial Light Modulator

Young-Gu Ju

Subject: Optics And Photonics, Physical Sciences Keywords: optical neural network; optical computer; backpropagation; neural network; lens array; free-space optics

Online: 22 April 2024 (11:16:45 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202404.1704.v1

Vision System for the Mars Sample Return Capture, Containment and Return System (CCRS)

Brent Jon Bos, David Donovan, John Capone, Chen Wang, Terra Hardwick, Dylan Bell, Yuqing Zhu, Robert Podgurski, Bashar Rizk, Ireneusz Orlowski, Rachel Edison, David Harvey, Brianna Dizzon, Lindsay Haseltine, Kristoffer Olsen, Chad Sheng, Robert Bousquet, Luan Vo, Georgi Georgiev, Kristen Washington, Michael Singer, Stefan Ioana, Anloc Le, Elena Georgieva, Michael Hackett, Michael Ravine, Michael Caplinger, Phillip Coulter, Erin Percy, Charles Torisky, Jean Lauenstein, Kaitlyn Ryder, Michael Campola, Dillon Johnstone, William J. Thomes, Richard G. Schnurr, John McCloskey, Eugenia DeMarco, Ellen Lee, Calinda Yew, Bo Yang, Mingyu Han, Bartosz Blonski

Subject: Aerospace Engineering, Engineering Keywords: Mars; cameras; sample return; space optics

Online: 26 April 2024 (09:33:12 CEST)

Show abstract| Download PDF| Share

Search Results

120 articles found