Results 101 to 110 of about 20,480 (209)

The HARPS polarimeter

, 2010
We recently commissioned the polarimetric upgrade of the HARPS spectrograph at ESO's 3.6-m telescope at La Silla, Chile. The HARPS polarimeter is capable of full Stokes spectropolarimetry with large sensitivity and accuracy, taking advantage of the large
Dolgopolov, Andrey, Jeffers, Sandra, Johns-Krull, Christopher, Keller, Christoph, Kochukhov, Oleg, Makaganiuk, Vitaly, Piskunov, Nikolai, Rodenhuis, Michiel, Snik, Frans, Stempels, Eric, Valenti, Jeff   +10 more
core   +1 more source

A Polarimetric Wavefront Imager

10 pages, 4 ...
Blochet, Baptiste, Lelu, Grégoire, Alonso, Miguel A., Guillon, Marc   +3 more
openaire   +2 more sources

Quantitative polarimetric wavefront imaging

Optica
Imaging both the polarization and the wavefront of a light beam is a complex task that typically demands several intensity acquisitions. Furthermore, sequential acquisition solutions are incompatible with the monitoring of ultra-fast processes. As a possible solution for single-shot wavefront and full-Stokes polarimetric imaging, we
Blochet, Baptiste, Lelu, Grégoire, Alonso, Miguel, Guillon, Marc   +3 more
openaire   +2 more sources

Reflection mode polarimetry guides laser mass spectrometry to diagnostically important regions of human breast cancer tissue

Scientific Reports
To enhance the clinical utility of mass spectrometry (MS), lengthy dwell times on less informative regions of patient specimens (e.g., adipose tissue in breast) must be minimized. Additionally, a promising variant of MS known as picosecond infrared laser
Michael D. Singh, Lan Anna Ye, Michael Woolman, Francis Talbot, Arash Zarrine-Afsar, Alex Vitkin   +5 more
doaj   +1 more source

Object Detection Method Based on Polarimetric Features and PFOD-Net Under Adverse Weather Conditions

Applied Sciences
To address insufficient real-time detection accuracy of standard YOLO models under adverse weather, we propose PFOD-Net, a multi-scale detector based on polarimetric features and an improved YOLOv8n.
Xingtao Li, Wenjuan Li, Xiaoyao Yan, Weifeng Wang, Fan Bu   +4 more
doaj   +1 more source

Underwater Imaging Based on LF and Polarization

IEEE Photonics Journal, 2019
The underwater image restoration based on polarization information has achieved good results in improving the image quality in scattering media. However, the previous methods are difficult to obtain the true distribution of degree of polarization in the ...
Yu Tian, Bin Liu, Xinyan Su, Lipeng Wang, Ke Li   +4 more
doaj   +1 more source

Visualisation methods for polarimetric imaging

, 2021
Polarimetric imaging is a technique for measuring the spatial correlations of the aspects of the polarisation of light. Since human vision is essentially unable to detect polarisation, the data obtained from this imaging technique must be converted into the channels of the human visual system in order to visually process the spatial correlations in the
openaire   +2 more sources

Advanced Polarimetry and Polarimetric Imaging

Photonics
Polarization, a core attribute of light waves, offers insights into light’s physical properties and its interactions with materials [...]
Xiaobo Li, Fei Liu, Jian Liang
doaj   +1 more source

Quantum-Enhanced Polarimetric Imaging

Polarimetric imaging, a technique that captures the invisible polarization-related properties of given materials, has broad applications from fundamental physics to advanced fields such as target recognition, stress detection, biomedical diagnosis and remote sensing.
Xie, Meng-Yu, Niu, Su-Jian, Han, Zhao-Qi-Zhi, Li, Yin-Hai, Chen, Ren-Hui, Wang, Xiao-Hua, Gao, Ming-Yuan, Chen, Li, Song, Yue-Wei, Zhou, Zhi-Yuan, Shi, Bao-Sen   +10 more
openaire   +2 more sources

Mitigating pseudo-depolarization in constant-step rotating Mueller matrix polarimetry: An optimized self-registration method

Journal of Innovative Optical Health Sciences
As an emerging powerful tool to provide structural information of tissue specimens label-freely, Mueller matrix (MM) polarimetry has garnered extensive attention in biomedical studies and pathological diagnosis.
Kaisha Deng, Nan Zeng, Liangyu Deng, Qiaoqi Tang, Chunyan Chen, Hongtao Li, Zhiyan Liu, Hui Ma, Chao He, Honghui He   +9 more
doaj   +1 more source