Patent ID: 8509928
Filing Date: 2013-08-13
Classification: A61B,A61M,G03H,G10K,H04K,H04S

Abstract:
1. A method of producing a stationary localized wave field of an a-priori predetermined arbitrary shape comprising the following steps: providing a laser emitter or ultrasound transducer generating a beam; defining at least a volume limited in the direction of an axis z of propagation of the beam, the volume being a longitudinal interval having 0≦z≦L, where z is a longitudinal position and L is a length of a longitudinal interval; defining a priori within the longitudinal interval an intensity pattern μf(z)μ providing a discrete, generic superposition of Bessel beams or other transversally confined beams; calculating a maximum allowed number of Bessel beams to be superposed; calculating amplitudes, phase velocities, and transverse and longitudinal wavenumbers of each Bessel beam or other transversally confined beam of the superposition, needed to obtain a predefined STATIONARY intensity pattern within the longitudinal interval; and recognizing and controlling an effect of each of the amplitudes, phase velocities, and transverse and longitudinal wavenumbers in the step of calculating amplitudes for controlling a longitudinal shape of the stationary localized wave field, thereby generating a source of the desired localized and stationary wave field having an a-priori predetermined arbitrary shape.