Speckle noise reduction strategies in laser-based projection imaging, fluorescence microscopy, and digital holography with uniform illumination, improved image …

V Kumar, AK Dubey, M Gupta, V Singh, A Butola… - Optics & laser …, 2021 - Elsevier
There has been immense advancement in laser-based projection imaging, fluorescence
microscopy, single-molecule localization nanoscopy, and digital holography. These …

Optical stimulation systems for studying human vision

PA Barrionuevo, OU Preciado, MLS Salinas… - Progress in brain …, 2022 - Elsevier
This chapter describes the most common setups that scientists use for generating light
stimulation, from lab-made approaches to commercially available technologies. The studied …

YAG: Ce PiGF@ Alumina‐substrate in a reflection mode for high‐brightness laser‐driven projection display

Z Yang, S Zheng, T Pang, S Liao, J Zhu… - Advanced Materials …, 2023 - Wiley Online Library
Laser‐driven projector puts forward urgent demand for light‐conversion materials to achieve
high‐quality image display. Herein, a composite structure phosphor‐in‐glass film (PiGF) is …

Speckle noise reduction in coherent imaging systems via hybrid median–mean filter

R Castaneda, J Garcia-Sucerquia… - Optical …, 2021 - spiedigitallibrary.org
Images recorded by coherent imaging systems, including laser-based photography, digital
holography (DH), and digital holographic microscopy (DHM), are severely distorted by …

Megahertz-rate background-oriented schlieren tomography in post-detonation blasts

M Gomez, SJ Grauer, J Ludwigsen, AM Steinberg… - Applied …, 2022 - opg.optica.org
The understanding and predictive modeling of explosive blasts require advanced
experimental diagnostics that can provide information on local state variables with high …

Fast laser speckle suppression with an intracavity diffuser

S Mahler, Y Eliezer, H Yılmaz, AA Friesem… - …, 2020 - degruyter.com
Fast speckle suppression is crucial for time-resolved full-field imaging with laser illumination.
Here, we introduce a method to accelerate the spatial decoherence of laser emission …

Spatiotemporal supermodes: Rapid reduction of spatial coherence in highly multimode lasers

R Chriki, S Mahler, C Tradonsky, V Pal, AA Friesem… - Physical Review A, 2018 - APS
Spatial coherence quantifies spatial field correlations and is one of the fundamental
properties of light. Here we investigate the spatial coherence of highly multimode lasers in …

Enhancing laser speckle reduction by decreasing the pitch of a chiral nematic liquid crystal diffuser

DJ Hansford, Y Jin, SJ Elston, SM Morris - Scientific Reports, 2021 - nature.com
The artefact known as speckle can plague numerous imaging applications where the narrow
linewidth of laser light is required, which includes laser projection and medical imaging …

[HTML][HTML] Methods and devices of speckle-noise suppression

I Kompanets, N Zalyapin - Optics and Photonics Journal, 2020 - scirp.org
Speckles in images formed by a laser beam are interference noise arising due to coherent
nature of laser radiation. As the number of projection systems using laser light sources …

Hybrid spatial–temporal Mueller matrix imaging spectropolarimeter for high throughput plant phenotyping

MW Kudenov, D Krafft, CG Scarboro, CJ Doherty… - Applied Optics, 2023 - opg.optica.org
Many correlations exist between spectral reflectance or transmission with various
phenotypic responses from plants. Of interest to us are metabolic characteristics, namely …