LRI Instrument status talk

2020 ◽  
Author(s):  
Samuel Francis
Keyword(s):  
High Frequency ◽  
Laser Frequency ◽  
Frequency Stability ◽  
Current Status ◽  
Range Measurement ◽  
Best Estimate

<p>In this talk, the current status of the LRI instrument will be presented. Topics will include laser frequency stability since launch, current best estimate of the noises in the LRI range spectra, and a look at some high-frequency signals visible in the LRI range measurement.</p>

Improved cryogenic sapphire oscillator with exceptionally high frequency stability

2000 ◽  
Vol 36 (5) ◽  
pp. 480 ◽  
Author(s):  
S. Chang ◽  
A.G. Mann ◽  
A.N. Luiten
Keyword(s):  
High Frequency ◽  
Frequency Stability

Self-referenced distribution of millimeter waves over 10-km optical fiber with high frequency stability

2021 ◽  
Author(s):  
chunlong yu ◽  
hao guo ◽  
YAN AN ◽  
Yihan Li ◽  
Zheng Zheng
Keyword(s):  
Optical Fiber ◽  
High Frequency ◽  
Millimeter Waves ◽  
Frequency Stability

2-µm Doppler lidar transmitter with high frequency stability and low chirp

2000 ◽  
Vol 25 (17) ◽  
pp. 1228 ◽  
Author(s):  
V. Wulfmeyer ◽  
M. Randall ◽  
A. Brewer ◽  
R. M. Hardesty
Keyword(s):  
High Frequency ◽  
Frequency Stability ◽  
Doppler Lidar

The High Frequency coastal radar network in the Mediterranean: joint efforts towards a fully operational implementation

2021 ◽  
Author(s):  
Pablo Lorente ◽  
Keyword(s):  
Marine Environment ◽  
High Frequency ◽  
Production Management ◽  
Hot Spot ◽  
Coastal Areas ◽  
Coastal Hazards ◽  
Current Status ◽  
Wide Range ◽  
The Mediterranean

<p>The Mediterranean Sea is considered a relevant geostrategic region and a prominent climate change hot spot. This semi-enclosed basin has been the subject of abundant studies due to its vulnerability to sea-level rise and other coastal hazards. With the steady advent of new technologies, a growing wealth of observational data are nowadays available to efficiently monitor the sea state and properly respond to socio-ecological challenges and stakeholder needs, thereby strengthening the community resilience at multiple scales.</p><p>Nowadays, High-Frequency radar (HFR) is a worldwide consolidated land-based remote sensing technology since it provides, concurrently and in near real time, fine-resolution maps of the surface circulation along with (increasingly) wave and wind information over broad coastal areas. HFR systems present a wide range of practical applications: maritime safety, oil spill emergencies, energy production, management of extreme coastal hazards. Consequently, they have become an essential component of coastal ocean observatories since they offer a unique dynamical framework that complement conventional in-situ observing platforms. Likewise, within the frame of the Copernicus Marine Environment Monitoring Service (CMEMS), HFR are valuable assets that play a key pivotal role in both the effective monitoring of coastal areas and the rigorous skill assessment of operational ocean forecasting systems.</p><p>The present work aims to show a panoramic overview not only of the current status of diverse Mediterranean HFR systems, but also of the coordinated joint efforts between many multi-disciplinary institutions to establish a permanent HFR monitoring network in the Mediterranean, aligned with European and global initiatives. In this context, it is worth highlighting that many of the Mediterranean HFR systems are already integrated into the European HFR Node, which acts as central focal point for data collection, homogenization, quality assurance and dissemination and promotes networking between EU infrastructures and the Global HFR network.</p><p>Furthermore, priority challenges tied to the implementation of a long-term, fully integrated, sustainable operational Mediterranean HFR network are described. This includes aspects related to the setting up of such a system within the broader framework of the European Ocean Observing System (EOOS), and a long-term financial support required to preserve the infrastructure core service already implemented. Apart from the technological challenges, the enhancing of the HFR data discovery and access, the boosting of the data usage as well as the research integration must be achieved by building synergies among academia, management agencies, state government offices, intermediate and end users. This would guarantee a coordinated development of tailored products that meet the societal needs and foster user uptake, serving the marine industry with dedicated smart innovative services, along with the promotion of strategic planning and informed decision-making in the marine environment.</p>

scholarly journals Efficient technique for measuring laser frequency stability

2009 ◽  
Vol 48 (2) ◽  
pp. 20701 ◽  
Author(s):  
A. Sargsyan ◽  
A. V. Papoyan ◽  
D. Sarkisyan ◽  
A. Weis
Keyword(s):  
Laser Frequency ◽  
Frequency Stability ◽  
Efficient Technique

High-frequency-stability diode-pumped Nd:YAG lasers with the FM sidebands method and Doppler-free iodine lines at 532 nm

1999 ◽  
Vol 38 (33) ◽  
pp. 6962 ◽  
Author(s):  
Gianluca Galzerano ◽  
Cesare Svelto ◽  
Elio Bava ◽  
Fabrizio Bertinetto
Keyword(s):  
High Frequency ◽  
Frequency Stability ◽  
Nd:Yag Lasers ◽  
Free Iodine ◽  
Diode Pumped ◽  
532 Nm

High-Frequency Stability of Detonations and Turning Points at Infinity

2015 ◽  
Vol 47 (3) ◽  
pp. 1800-1878 ◽  
Author(s):  
Olivier Lafitte ◽  
Mark Williams ◽  
Kevin Zumbrun
Keyword(s):  
High Frequency ◽  
Turning Points ◽  
Frequency Stability

Achromatic optical device for generation of a broadband frequency spectrum with high-frequency stability and sharp termination

2001 ◽  
Vol 18 (3) ◽  
pp. 335 ◽  
Author(s):  
S. N. Atutov ◽  
W. Baldini ◽  
R. Calabrese ◽  
V. Guidi ◽  
P. Lenisa ◽  
...  
Keyword(s):  
Frequency Spectrum ◽  
High Frequency ◽  
Frequency Stability ◽  
Optical Device ◽  
Broadband Frequency

Atomic fountain clock with very high frequency stability employing a pulse-tube-cryocooled sapphire oscillator

2014 ◽  
Vol 61 (9) ◽  
pp. 1463-1469 ◽  
Author(s):  
Akifumi Takamizawa ◽  
Shinya Yanagimachi ◽  
Takehiko Tanabe ◽  
Ken Hagimoto ◽  
Iku Hirano ◽  
...  
Keyword(s):  
High Frequency ◽  
Frequency Stability ◽  
Pulse Tube ◽  
Very High Frequency ◽  
Atomic Fountain ◽  
Very High
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