Reflectivity of electromagnetic wave absorbers in millimetre wave frequency. Measurement methods

2015 ◽  
Keyword(s):  
Electromagnetic Wave ◽  
Frequency Measurement ◽  
Measurement Methods ◽  
Wave Frequency ◽  
Millimetre Wave

Electromagnetic-wave-pumped free-electron laser in a plasma channel

1997 ◽  
Vol 58 (4) ◽  
pp. 613-621 ◽  
Author(s):  
JETENDRA PARASHAR ◽  
H. D. PANDEY ◽  
A. K. SHARMA ◽  
V. K. TRIPATHI
Keyword(s):  
Electron Beam ◽  
Electromagnetic Wave ◽  
Laser Radiation ◽  
Laser Pulse ◽  
Free Electron Laser ◽  
Relativistic Electron Beam ◽  
Plasma Channel ◽  
Beam Quality ◽  
Coherent Radiation ◽  
Millimetre Wave

An intense short laser pulse or a millimetre wave propagating through a plasma channel may act as a wiggler for the generation of shorter wavelengths. When a relativistic electron beam is launched into the channel from the opposite direction, the laser radiation is Compton/Raman backscattered to produce coherent radiation at shorter wavelengths. The scheme, however, requires a superior beam quality with energy spread less than 1% in the Raman regime.

scholarly journals Theory of electromagnetic wave frequency upconversion in dynamic media

2018 ◽  
Vol 98 (2) ◽  
Author(s):  
Kenan Qu ◽  
Qing Jia ◽  
Matthew R. Edwards ◽  
Nathaniel J. Fisch
Keyword(s):  
Electromagnetic Wave ◽  
Wave Frequency ◽  
Frequency Upconversion

Millimetre-wave frequency tripling using stacked heterostructure-barrier varactors on InP

1996 ◽  
Vol 143 (4) ◽  
pp. 272 ◽  
Author(s):  
K. Krishnamurthi ◽  
R.G. Harrison
Keyword(s):  
Wave Frequency ◽  
Millimetre Wave ◽  
Heterostructure Barrier Varactors

A focusing technique based on a data spatial diversity at millimetre-wave frequency

2014 ◽  
Author(s):  
Michael Bocquet ◽  
Atika Rivenq ◽  
Christophe Loyez ◽  
Nathalie Rolland
Keyword(s):  
Spatial Diversity ◽  
Wave Frequency ◽  
Millimetre Wave

Miniaturised millimetre wave frequency selective surface for atmospheric remote sensing

2017 ◽  
Vol 53 (10) ◽  
pp. 663-665
Author(s):  
J. Poojali ◽  
S. Ray ◽  
B. Pesala ◽  
C.V. Krishnamurthy ◽  
K. Arunachalam
Keyword(s):  
Remote Sensing ◽  
Frequency Selective Surface ◽  
Wave Frequency ◽  
Millimetre Wave ◽  
Atmospheric Remote Sensing ◽  
Frequency Selective
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