… beam profile. Experiments were also conducted to measure the amount of attenuation of the
laser beam … subsequent combustion ofthe propellant attenuated the laser beam as it passed …

… of a propagating sonic beam. Such beam distortions affect ultrasonic attenuation measurements,
… The measured radiation pattern of the transducer was similar to that of a focused piston …

… Attenuation measurements can be derived from the decay of … volumes defined by pulse
and beam widths, Rayleigh statistics … results in the speckle patterns commonly seen in tissues …

… to greatly expand coverage of particle size measurements in the ocean and advance …
series of simple optical measurements, such as beam attenuation or optical backscattering. …

… , we recorded a fringe pattern and approximated its envelope (which is a modulus of auto-…
(beam waist) in the sample arm as well. First, we measured the diameter of the beam at the …

… To this end, an ideal detector was placed 20 mm behind the respective attenuator,
measuring exclusively attenuator-scattered radiation toward the scan field and the detector. The …

… If we assume that transducer beam diffraction effects and ultrasonic attenuation contribute
… coefficients, in !!!£, using a method which avoids effects due to the beam pattern. In their C-…

… The pattern of scattered light was inverted into a particle size distribution using an instrument…
to minimize the difference between the beam attenuation measured by the LISST and two …

… to measure attenuation in these materials. This research uses a dual-probe, heterodyne
interferometer to experimentally measure these attenuation … The probe beam is reflected off the …

… The etalon is then interrogated by a focused laser beam. … tern between the reflected light
beams. By monitoring the intensity … was fitted to the measured interference pattern and used to …