Speckle noise reduction strategies in laser-based projection imaging, fluorescence microscopy, and digital holography with uniform illumination, improved image …

V Kumar, AK Dubey, M Gupta, V Singh, A Butola… - Optics & laser …, 2021 - Elsevier
There has been immense advancement in laser-based projection imaging, fluorescence
microscopy, single-molecule localization nanoscopy, and digital holography. These …

Speckle reduction methods in laser-based picture projectors

MN Akram, X Chen - Optical Review, 2016 - Springer
Laser sources have been promised for many years to be better light sources as compared to
traditional lamps or light-emitting diodes (LEDs) for projectors, which enable projectors …

[PDF][PDF] Laser speckle reduction by multimode optical fiber bundle with combined temporal, spatial, and angular diversity

DS Mehta, DN Naik, RK Singh, M Takeda - Applied optics, 2012 - researchgate.net
We report significant speckle reduction in a laser illumination system using a vibrating
multimode optical fiber bundle. The optical fiber bundle was illuminated by two independent …

Laser speckle reduction due to spatial and angular diversity introduced by fast scanning micromirror

MN Akram, Z Tong, G Ouyang, X Chen, V Kartashov - Applied optics, 2010 - opg.optica.org
We utilize spatial and angular diversity to achieve speckle reduction in laser illumination.
Both free-space and imaging geometry configurations are considered. A fast two …

Speckle reduction in laser projection displays through angle and wavelength diversity

TTK Tran, Ø Svensen, X Chen, M Nadeem Akram - Applied optics, 2016 - opg.optica.org
Speckle is the main obstacle for the use of laser light sources in projection technology. This
paper focuses on speckle suppression by the reduction of temporal coherence which is …

Low-loss high-speed speckle reduction using a colloidal dispersion

B Redding, G Allen, ER Dufresne, H Cao - Applied optics, 2013 - opg.optica.org
We present a simple and robust approach to reduce laser speckle, which has limited the
adoption of lasers in imaging and display applications. We use colloidal solutions that can …

Random binary code generation using dark-bright soliton conversion control within a PANDA ring resonator

T Phatharaworamet, C Teeka… - Journal of lightwave …, 2010 - ieeexplore.ieee.org
In this paper, we have derived and presented the dynamic behavior of dark-bright soliton
collision within the modified add/drop filter, which it is known as PANDA ring resonator. By …

Speckle reduction in laser projection using a dynamic deformable mirror

TKT Tran, X Chen, Ø Svensen, MN Akram - Optics express, 2014 - opg.optica.org
Despite of much effort and significant progress in recent years, speckle removal is still a
challenge for laser projection technology. In this paper, speckle reduction by dynamic …

[HTML][HTML] Fabrication of ultrathin flexible diffractive optical elements (DOEs) and application for laser speckle suppression

Z Le, Z Liu, Y Qiu, H Ren, Y Dai - Optics and Lasers in Engineering, 2022 - Elsevier
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 …

Manipulating the spatial coherence of a laser source

R Chriki, M Nixon, V Pal, C Tradonsky, G Barach… - Optics express, 2015 - opg.optica.org
An efficient method for controlling the spatial coherence has previously been demonstrated
in a modified degenerate cavity laser. There, the degree of spatial coherence was controlled …