Bessel-Gauss Beams Through Leaky Waves: Focusing and Diffractive Properties

2020 ◽  
Vol 13 (6) ◽  
Author(s):  
Walter Fuscaldo ◽  
Alessio Benedetti ◽  
Davide Comite ◽  
Paolo Baccarelli ◽  
Paolo Burghignoli ◽  
...  
Keyword(s):  
Leaky Waves

Measurements of velocity and attenuation of leaky waves using an ultrasonic array

Ultrasonics ◽  
2006 ◽  
Vol 44 (2) ◽  
pp. 182-187 ◽  
Author(s):  
Sergey Titov ◽  
Roman Maev ◽  
Alexey Bogachenkov
Keyword(s):  
Leaky Waves ◽  
Ultrasonic Array

scholarly journals Surface Leaky Waves and Their Measurement

1998 ◽  
Author(s):  
Jan Zehentner ◽  
Jan Machac ◽  
Jan Mrkvica ◽  
Marcin K. Samowski ◽  
Jiri Polivka
Keyword(s):  
Leaky Waves

LEAKY SURFACE ACOUSTIC WAVES IN SINGLE-CRYSTAL AlN SUBSTRATE

2004 ◽  
Vol 14 (03) ◽  
pp. 837-846 ◽  
Author(s):  
GANG BU ◽  
DAUMANTAS CIPLYS ◽  
MICHAEL S. SHUR ◽  
LEO J. SCHOWALTER ◽  
SANDRA B. SCHUJMAN ◽  
...  
Keyword(s):  
Single Crystal ◽  
Acoustic Waves ◽  
Electromechanical Coupling ◽  
Surface Acoustic Waves ◽  
Propagation Direction ◽  
Electromechanical Coupling Coefficient ◽  
Coupling Coefficients ◽  
Leaky Waves ◽  
Temperature Coefficient Of Frequency ◽  
Piezoelectric Constants

We report on the velocity V and the electromechanical coupling coefficient K2 of the first and the second leaky surface acoustic waves in various propagation directions in the a-plane AlN single-crystal. For c-propagation direction, the second leaky wave exhibited the velocity of 11016 m/s and K2 of 0.45%. For this direction, the temperature coefficient of frequency was found to be -30 ppm/°C. A near match of the velocities of the plane and leaky waves in the a-plane AlN allowed us to establish analytical relationships between the piezoelectric and elastic constants. A full set of elastic and piezoelectric constants of AlN has been evaluated by fitting the measured and calculated dependencies of velocities and electromechanical coupling coefficients on the propagation direction for both Rayleigh and leaky waves.

Čerenkov radiation and leaky waves

1963 ◽  
Vol 51 (4) ◽  
pp. 622-624
Author(s):  
I. Palocz ◽  
A.A. Oliner ◽  
L.W. Zelby
Keyword(s):  
Leaky Waves
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