Wide-band continuous-wave terahertz source with a vertically integrated photomixer

2009 ◽  
Vol 95 (16) ◽  
pp. 161102 ◽  
Author(s):  
E. Peytavit ◽  
J-F. Lampin ◽  
F. Hindle ◽  
C. Yang ◽  
G. Mouret
Keyword(s):  
Continuous Wave ◽  
Wide Band ◽  
Terahertz Source

The Ka-band 10-kW continuous wave gyrotron with wide-band fast frequency sweep

2012 ◽  
Vol 83 (7) ◽  
pp. 074706 ◽  
Author(s):  
M. Glyavin ◽  
A. Luchinin ◽  
M. Morozkin
Keyword(s):  
Continuous Wave ◽  
Wide Band ◽  
Frequency Sweep ◽  
Ka Band

scholarly journals Radar Imager for Mars’ Subsurface Experiment—RIMFAX

2020 ◽  
Vol 216 (8) ◽  
Author(s):  
Svein-Erik Hamran ◽  
David A. Paige ◽  
Hans E. F. Amundsen ◽  
Tor Berger ◽  
Sverre Brovoll ◽  
...  
Keyword(s):  
Continuous Wave ◽  
Sand Dunes ◽  
Landing Site ◽  
Wide Band ◽  
Center Frequency ◽  
Depth Range ◽  
Fmcw Radar ◽  
Shallow Subsurface ◽  
Eventual Return ◽  
Ground Penetrating

AbstractThe Radar Imager for Mars’ Subsurface Experiment (RIMFAX) is a Ground Penetrating Radar on the Mars 2020 mission’s Perseverance rover, which is planned to land near a deltaic landform in Jezero crater. RIMFAX will add a new dimension to rover investigations of Mars by providing the capability to image the shallow subsurface beneath the rover. The principal goals of the RIMFAX investigation are to image subsurface structure, and to provide information regarding subsurface composition. Data provided by RIMFAX will aid Perseverance’s mission to explore the ancient habitability of its field area and to select a set of promising geologic samples for analysis, caching, and eventual return to Earth. RIMFAX is a Frequency Modulated Continuous Wave (FMCW) radar, which transmits a signal swept through a range of frequencies, rather than a single wide-band pulse. The operating frequency range of 150–1200 MHz covers the typical frequencies of GPR used in geology. In general, the full bandwidth (with effective center frequency of 675 MHz) will be used for shallow imaging down to several meters, and a reduced bandwidth of the lower frequencies (center frequency 375 MHz) will be used for imaging deeper structures. The majority of data will be collected at regular distance intervals whenever the rover is driving, in each of the deep, shallow, and surface modes. Stationary measurements with extended integration times will improve depth range and SNR at select locations. The RIMFAX instrument consists of an electronic unit housed inside the rover body and an antenna mounted externally at the rear of the rover. Several instrument prototypes have been field tested in different geological settings, including glaciers, permafrost sediments, bioherme mound structures in limestone, and sedimentary features in sand dunes. Numerical modelling has provided a first assessment of RIMFAX’s imaging potential using parameters simulated for the Jezero crater landing site.

scholarly journals A compact, continuous-wave terahertz source based on a quantum-cascade laser and a miniature cryocooler

2010 ◽  
Vol 18 (10) ◽  
pp. 10177 ◽  
Author(s):  
H. Richter ◽  
M. Greiner-Bär ◽  
S. G. Pavlov ◽  
A. D. Semenov ◽  
M. Wienold ◽  
...  
Keyword(s):  
Quantum Cascade Laser ◽  
Continuous Wave ◽  
Terahertz Source ◽  
Quantum Cascade

scholarly journals Wide-band error-free wavelength conversion based on continuous-wave-triggered supercontinuum

2012 ◽  
Author(s):  
Xing Xu ◽  
Chi Zhang ◽  
T. I. Yuk ◽  
Kevin K. Tsia ◽  
Kenneth K. Y. Wong
Keyword(s):  
Wavelength Conversion ◽  
Continuous Wave ◽  
Wide Band

scholarly journals Design of a continuous-wave tunable terahertz source using waveguide-phase-matched GaAs

2008 ◽  
Vol 16 (14) ◽  
pp. 10427 ◽  
Author(s):  
Alireza Marandi ◽  
Thomas E. Darcie ◽  
Poman P. M. So
Keyword(s):  
Continuous Wave ◽  
Terahertz Source

scholarly journals Continuous-wave optical parametric terahertz source

2009 ◽  
Vol 17 (25) ◽  
pp. 22303 ◽  
Author(s):  
Rosita Sowade ◽  
Ingo Breunig ◽  
Iván Cámara Mayorga ◽  
Jens Kiessling ◽  
Cristian Tulea ◽  
...  
Keyword(s):  
Continuous Wave ◽  
Terahertz Source ◽  
Optical Parametric

Precisely tunable continuous-wave terahertz source with interferometric frequency control

2008 ◽  
Vol 79 (4) ◽  
pp. 044702 ◽  
Author(s):  
Anselm J. Deninger ◽  
Thorsten Göbel ◽  
Daniel Schönherr ◽  
Thomas Kinder ◽  
Axel Roggenbuck ◽  
...  
Keyword(s):  
Continuous Wave ◽  
Frequency Control ◽  
Terahertz Source
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