Phase conjugation of the second harmonic in a sound beam propagating through an immersed elastic solid with rough surfaces

2006 ◽  
Author(s):  
M. E. Stone
Keyword(s):  
Second Harmonic ◽  
Rough Surfaces ◽  
Phase Conjugation ◽  
Elastic Solid ◽  
Sound Beam

A more general model equation of nonlinear Rayleigh waves and their quasilinear solutions

2016 ◽  
Vol 30 (08) ◽  
pp. 1650096 ◽  
Author(s):  
Shuzeng Zhang ◽  
Xiongbing Li ◽  
Hyunjo Jeong
Keyword(s):  
Rayleigh Waves ◽  
General Equation ◽  
Wave Motion ◽  
Numerical Solutions ◽  
Second Harmonic ◽  
Approximate Equation ◽  
Finite Amplitude ◽  
Sound Beam ◽  
Quasilinear Theory ◽  
Sound Beams

A more general two-dimensional wave motion equation with consideration of attenuation and nonlinearity is proposed to describe propagating nonlinear Rayleigh waves of finite amplitude. Based on the quasilinear theory, the numerical solutions for the sound beams of fundamental and second harmonic waves are constructed with Green’s function method. Compared with solutions from the parabolic approximate equation, results from the general equation have more accuracy in both the near distance of the propagation direction and the far distance of the transverse direction, as quasiplane waves are used and non-paraxial Green’s functions are obtained. It is more effective to obtain the nonlinear Rayleigh sound beam distributions accurately with the proposed general equation and solutions. Brief consideration is given to the measurement of nonlinear parameter using nonlinear Rayleigh waves.

scholarly journals Digital phase conjugation of second harmonic radiation emitted by nanoparticles in turbid media

2010 ◽  
Vol 18 (12) ◽  
pp. 12283 ◽  
Author(s):  
Chia-Lung Hsieh ◽  
Ye Pu ◽  
Rachel Grange ◽  
Demetri Psaltis
Keyword(s):  
Second Harmonic ◽  
Phase Conjugation ◽  
Turbid Media ◽  
Harmonic Radiation ◽  
Digital Phase ◽  
Second Harmonic Radiation

Parametric phase conjugation for the second harmonic of a nonlinear ultrasonic beam

2003 ◽  
Vol 49 (1) ◽  
pp. 19-23 ◽  
Author(s):  
A. P. Brysev ◽  
F. V. Bunkin ◽  
M. F. Hamilton ◽  
R. V. Klopotov ◽  
L. M. Krutyanskii ◽  
...  
Keyword(s):  
Second Harmonic ◽  
Phase Conjugation ◽  
Ultrasonic Beam ◽  
Nonlinear Ultrasonic

Study of second harmonic generation by non-linear crystals with phase conjugation

2006 ◽  
Vol 261 (2) ◽  
pp. 342-348 ◽  
Author(s):  
Anirban Mitra ◽  
Hidetsugu Yoshida ◽  
Hisanori Fujita ◽  
Masahiro Nakatsuka
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Second Harmonic ◽  
Phase Conjugation ◽  
Non Linear
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