Anti-Stokes fluorescence cooling in Yb-doped ZBLAN fibers at atmospheric pressure: experiments and near-future prospects

2019 ◽  
Author(s):  
Jenny M. Knall ◽  
Arushi Arora ◽  
Martin Bernier ◽  
Michel J. F. Digonnet
Keyword(s):  
Atmospheric Pressure ◽  
Future Prospects ◽  
Anti Stokes ◽  
Near Future

scholarly journals A Review on Electric Vehicles: Technologies and Challenges

Smart Cities ◽  
2021 ◽  
Vol 4 (1) ◽  
pp. 372-404
Author(s):  
Julio A. Sanguesa ◽  
Vicente Torres-Sanz ◽  
Piedad Garrido ◽  
Francisco J. Martinez ◽  
Johann M. Marquez-Barja
Keyword(s):  
Electric Vehicles ◽  
Lithium Ion ◽  
Future Prospects ◽  
Academic Communities ◽  
Market Situation ◽  
Battery Technology ◽  
Battery Energy ◽  
New Research ◽  
Near Future ◽  
Technology Trends

Electric Vehicles (EVs) are gaining momentum due to several factors, including the price reduction as well as the climate and environmental awareness. This paper reviews the advances of EVs regarding battery technology trends, charging methods, as well as new research challenges and open opportunities. More specifically, an analysis of the worldwide market situation of EVs and their future prospects is carried out. Given that one of the fundamental aspects in EVs is the battery, the paper presents a thorough review of the battery technologies—from the Lead-acid batteries to the Lithium-ion. Moreover, we review the different standards that are available for EVs charging process, as well as the power control and battery energy management proposals. Finally, we conclude our work by presenting our vision about what is expected in the near future within this field, as well as the research aspects that are still open for both industry and academic communities.

scholarly journals NEAR FUTURE PROSPECTS OF QCD SPIN STUDIES

1994 ◽  
Vol 09 (15) ◽  
pp. 2505-2544 ◽  
Author(s):  
P.M. NADOLSKY ◽  
S.M. TROSHIN ◽  
N.E. TYURIN
Keyword(s):  
Present Status ◽  
High Energy ◽  
Future Prospects ◽  
Wide Range ◽  
Spin Measurements ◽  
Near Future

We consider the physics motivations and prospects for the study of spin phenomena at future high energy accelerators. The possibilities of using the already operating machines are also discussed. It is emphasized that the present status of QCD spin studies requires a wide range of spin measurements.

scholarly journals New Trends in Raman Spectroscopy: From High-Resolution Geochemistry to Planetary Exploration

Elements ◽  
2020 ◽  
Vol 16 (2) ◽  
pp. 117-122 ◽  
Author(s):  
Olivier Beyssac
Keyword(s):  
Raman Spectroscopy ◽  
Surface Enhanced Raman Spectroscopy ◽  
Raman Signal ◽  
Time Resolved ◽  
The Earth ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Anti Stokes ◽  
Near Future ◽  
Very High

This article reviews nonconventional Raman spectroscopy techniques and discusses present and future applications of these techniques in the Earth and planetary sciences. Time-resolved spectroscopy opens new ways to limit or exploit luminescence effects, whereas techniques based on coherent anti-Stokes Raman scattering (CARS) or surface-enhanced Raman spectroscopy (SERS) allow the Raman signal to be considerably enhanced even down to very high spatial resolutions. In addition, compact portable Raman spectrometers are now routinely used out of the laboratory and are even integrated to two rovers going to Mars in the near future.

Advances in Laser Cooling of Solids

2006 ◽  
Vol 129 (1) ◽  
pp. 3-10 ◽  
Author(s):  
X. L. Ruan ◽  
M. Kaviany
Keyword(s):  
Laser Cooling ◽  
Nonradiative Recombination ◽  
Rapid Progress ◽  
Cooling Process ◽  
Theoretical Limit ◽  
Rare Earth Ion ◽  
Cooling Performance ◽  
Theoretical Predictions ◽  
Anti Stokes ◽  
Near Future

We review the progress on laser cooling of solids. Laser cooling of ion-doped solids and semiconductors is based on the anti-Stokes fluorescence, where the emitted photons have a mean energy higher than that of the absorbed photons. The thermodynamic analysis shows that this cooling process does not violate the second law, and that the achieved efficiency is much lower than the theoretical limit. Laser cooling has experienced rapid progress in rare-earth-ion doped solids in the last decade, with the temperature difference increasing from 0.3to92K. Further improvements can be explored from the perspectives of materials and structures. Also, theories need to be developed, to provide guidance for searching enhanced cooling performance. Theoretical predictions show that semiconductors may be cooled more than ion-doped solids, but no success in bulk cooling has been achieved yet after a few attempts (due to the fluorescence trapping and nonradiative recombination). Possible solutions are discussed, and net cooling is expected to be realized in the near future.

Comparison of Spontaneous Raman and CARS Measurements in a Laminar Flame at Atmospheric Pressure

1987 ◽  
Vol 41 (1) ◽  
pp. 98-106 ◽  
Author(s):  
W. Kreutner ◽  
W. Stricker ◽  
Th. Just
Keyword(s):  
Raman Scattering ◽  
Atmospheric Pressure ◽  
Laminar Flame ◽  
Spontaneous Raman Scattering ◽  
The Third ◽  
Spatially Resolved ◽  
Anti Stokes

Spontaneous Raman scattering and coherent anti-Stokes Raman scattering (CARS) were used to measure spatially resolved temperatures in a laminar, premixed propane/air flame at atmospheric pressure. Three models for the Raman linewidths were tested in the evaluation of the CARS spectra. Comparison with spontaneous Raman scattering shows that two of these models perform approximately equally; the third model leads to erroneous results.

scholarly journals The LUCIFER Project: Achievements and Near Future Prospects

2016 ◽  
Vol 184 (3-4) ◽  
pp. 852-858 ◽  
Author(s):  
J. W. Beeman ◽  
F. Bellini ◽  
P. Benetti ◽  
L. Cardani ◽  
N. Casali ◽  
...  
Keyword(s):  
Future Prospects ◽  
Near Future

Status report and near future prospects for the gravitational wave detector AURIGA

2002 ◽  
Vol 19 (7) ◽  
pp. 1925-1933 ◽  
Author(s):  
J-P Zendri ◽  
L Baggio ◽  
M Bignotto ◽  
M Bonaldi ◽  
M Cerdonio ◽  
...  
Keyword(s):  
Gravitational Wave ◽  
Status Report ◽  
Gravitational Wave Detector ◽  
Future Prospects ◽  
Wave Detector ◽  
Near Future
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