Compact and flexible optical components are expected to be utilized in laser-imaging
systems. We introduce a novel technique for producing self-made ultrathin flexible diffractive …

Laser displays are commonly used in various applications. However, they are subject to the
color speckle phenomenon. Herein, a color speckle measurement method for laser …

Laser-driven projection technology urgently requires green emitters with a narrow
bandwidth, high quantum efficiency, and long-term stability to compensate for the “green …

Speckles in images formed by a laser beam are interference noise arising due to coherent
nature of laser radiation. As the number of projection systems using laser light sources …

We report the design and development of an efficient speckle reduction device for projection
imaging. The device is composed of a combination of a rod-shaped waveguide diffuser and …

We propose and demonstrate a color-speckle assessment method based on a three-
dimensional J_za_zb_z color space, which is appropriate for both three-primary and multi …

Static laser speckle suppression using multimode fibers has practical limitations as the
technique requires an extremely long fiber to achieve an acceptable speckle contrast. An …

We present a technique that utilizes cascaded resonant cylindrical piezoelectric ceramics
and multimode optical fibers wound around them to effectively mitigate laser speckle. By …

The spatial coherence of filaments in edge-emitting broad-area semiconductor lasers (BALs)
is studied based on speckle theory, and a passive speckle suppression method for BALs is …

The speckle phenomenon produced by coherent waves interfering with each other is
undesirable in laser imaging systems. For each of the laser speckle reduction methods in …