Optical dynamic measurements are widely used for non-contact vibration, continuous
deformation, or moving objects. Various measurement techniques were developed for …

Sound detection with optical means is an appealing research topic. In this manuscript, we
proposed a laser microphone system allowing simultaneous detection and regeneration of …

Audio signal acquisition using a laser speckle image is an appealing topic since it provides
an accurate and non-contact solution for vibration measurement. However, due to the …

The laser speckle correlation method has found widespread application for obtaining
information from vibrating objects. However, the resolution and accuracy of the laser speckle …

In the optical system for reconstructing speech signals based on laser speckle images, the
resonance between the sound source and nearby objects leads to frequency response …

In general, the sound waves can cause the vibration of the objects that are encountered in
the traveling path. If we make a laser beam illuminate the rough surface of an object, it will …

When a rough surface is illuminated by a laser beam, it scatters the light, producing a
random interference pattern also known as speckle pattern. By imaging the speckle pattern …

Speckle pattern-based remote vibration monitoring has recently become increasingly
valuable in industrial, commercial, and medical applications. The dynamic and random …

The paper presents the results of application of optical system with brightness amplification,
a laser monitor, to study the surface of aluminum nanopowder at the time of laser ignition …

The paper presents the speckle images produced by clotting plasma when illuminating with
coherent light. By analyzing the changes of speckle images, it is possible to characterize the …