scholarly journals Optical properties behavior of three optical filters and a mirror used in the internal optical head of a Raman laser spectrometer after exposed to proton radiation

2017 ◽  
Author(s):  
C. G. Alvarado ◽  
M. Fernández-Rodriguez ◽  
P. Gallego ◽  
T. Belenguer ◽  
E. Díaz ◽  
...  
Keyword(s):  
Optical Properties ◽  
Raman Laser ◽  
Optical Filters ◽  
Proton Radiation ◽  
Laser Spectrometer ◽  
Optical Head

Raman laser spectrometer optical head: qualification model assembly and integration verification

2017 ◽  
Author(s):  
Maria del Rosario Canchal ◽  
Jose Antonio Rodriguez Prieto ◽  
Amaia Santiago ◽  
Cecilia Gordillo ◽  
David Escribano ◽  
...  
Keyword(s):  
Raman Laser ◽  
Laser Spectrometer ◽  
Optical Head

scholarly journals RLS iOH: ExoMars Raman laser spectrometer optical head bread board to flight model design and performance evolutions

2019 ◽  
Vol 51 (9) ◽  
pp. 1761-1770
Author(s):  
Gonzalo Ramos ◽  
Miguel Sanz‐Palomino ◽  
Andoni G. Moral ◽  
Carlos Pérez ◽  
Tomás Belenguer ◽  
...  
Keyword(s):  
Raman Laser ◽  
Model Design ◽  
Laser Spectrometer ◽  
Optical Head ◽  
And Performance ◽  
Flight Model

Raman laser spectrometer optical head: flight model performance verification

2018 ◽  
Author(s):  
Amaia Santiago ◽  
Gonzalo Ramos Zapata ◽  
Cecilia Gordillo ◽  
Juan F. Cabrero ◽  
Andoni Moral Inza ◽  
...  
Keyword(s):  
Model Performance ◽  
Raman Laser ◽  
Laser Spectrometer ◽  
Performance Verification ◽  
Optical Head ◽  
Flight Model

scholarly journals Polymer Dispersed Cholesteric Liquid Crystals With a Toroidal Director Configuration under an Electric Field

Polymers ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 732
Author(s):  
Anna P. Gardymova ◽  
Mikhail N. Krakhalev ◽  
Victor Ya. Zyryanov ◽  
Alexandra A. Gruzdenko ◽  
Andrey A. Alekseev ◽  
...  
Keyword(s):  
Optical Properties ◽  
Liquid Crystal ◽  
Electric Field ◽  
Point Defects ◽  
Structural Response ◽  
Optical Filters ◽  
Response Curves ◽  
Polymer Dispersed Liquid Crystal ◽  
Dichroic Dye ◽  
Polymer Dispersed

The electro-optical properties of polymer dispersed liquid crystal (PDLC) films are highly dependent on the features of the contained liquid crystal (LC) droplets. Cholesteric LC droplets with homeotropic boundaries can form several topologically different orientational structures, including ones with single and more point defects, layer-like, and axisymmetric twisted toroidal structures. These structures are very sensitive to an applied electric field. In this work, we have demonstrated experimentally and by computer simulations that twisted toroidal droplets reveal strong structural response to the electric field. In turn, this leads to vivid changes in the optical texture in crossed polarizers. The response of droplets of different sizes were found to be equivalent in terms of dimensionless parameters. In addition, the explanation of this phenomenon showed a comparison of theoretical and experimental structural response curves aids to determine the shape of the droplet. Finally, we demonstrated that the addition of a dichroic dye allows such films to be used as optical filters with adjustable color even without polarizers.

scholarly journals ExoMars Raman Laser Spectrometer (RLS): development of chemometric tools to classify ultramafic igneous rocks on Mars

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Marco Veneranda ◽  
Guillermo Lopez-Reyes ◽  
Jose Antonio Manrique-Martinez ◽  
Aurelio Sanz-Arranz ◽  
Emmanuel Lalla ◽  
...  
Keyword(s):  
Raman Laser ◽  
Mineralogical Composition ◽  
Landing Site ◽  
Ultramafic Rocks ◽  
Data Sets ◽  
Laser Spectrometer ◽  
Point Analysis ◽  
Quantitative Results ◽  
Operational Constraints ◽  
Chemometric Tools

Abstract This work aims to evaluate whether the multi-point analysis the ExoMars Raman Laser Spectrometer (RLS) will perform on powdered samples could serve to classify ultramafic rocks on Mars. To do so, the RLS ExoMars Simulator was used to study terrestrial analogues of Martian peridotites and pyroxenites by applying the operational constraints of the Raman spectrometer onboard the Rosalind Franklin rover. Besides qualitative analysis, RLS-dedicated calibration curves have been built to estimate the relative content of olivine and pyroxenes in the samples. These semi-quantitative results, combined with a rough estimate of the concentration ratio between clino- and ortho-pyroxene mineral phases, were used to classify the terrestrial analogues. XRD data were finally employed as reference to validate Raman results. As this preliminary work suggests, ultramafic rocks on Mars could be effectively classified through the chemometric analysis of RLS data sets. After optimization, the proposed chemometric tools could be applied to the study of the volcanic geological areas detected at the ExoMars landing site (Oxia Planum), whose mineralogical composition and geological evolution have not been fully understood.

Simulation guided design of silver nanostructures for plasmon-enhanced fluorescence, singlet oxygen generation and SERS applications

2020 ◽  
Vol 22 (10) ◽  
pp. 5673-5687 ◽  
Author(s):  
Mohammad Tavakkoli Yaraki ◽  
Soroosh Daqiqeh Rezaei ◽  
Yen Nee Tan
Keyword(s):  
Optical Properties ◽  
Singlet Oxygen ◽  
Raman Laser ◽  
Laser Wavelength ◽  
Silver Nanostructures ◽  
Enhanced Fluorescence ◽  
Oxygen Generation ◽  
Singlet Oxygen Generation ◽  
Silver Nanocubes ◽  
Plasmon Enhanced Fluorescence

A simulation-guided design of silver nanocubes for MEF, ME-SOG and SERS applications based on the fluorophore/photosensitizer's optical properties and Raman laser wavelength.

Preparation and optical properties of TeO 2 –BaO–ZnO–ZnF 2 fluoro-tellurite glass for mid-infrared fiber Raman laser applications

2017 ◽  
Vol 66 ◽  
pp. 567-572 ◽  
Author(s):  
Jie Li ◽  
Xusheng Xiao ◽  
Shaoxuan Gu ◽  
Yantao Xu ◽  
Zhiguang Zhou ◽  
...  
Keyword(s):  
Optical Properties ◽  
Tellurite Glass ◽  
Raman Laser ◽  
Laser Applications ◽  
Mid Infrared

ExoMars Raman laser spectrometer for Exomars

2011 ◽  
Author(s):  
F. Rull ◽  
A. Sansano ◽  
E. Díaz ◽  
C. P. Canora ◽  
A. G. Moral ◽  
...  
Keyword(s):  
Raman Laser ◽  
Laser Spectrometer
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