Results 21 to 30 of about 1,280,007 (347)
IEEE Photonics Journal, 2013 A noise reduction method of Fresnel computer-generated hologram (CGH) using wavelet transform and smooth filter is presented. Noise in hologram is very difficult to remove because an interference pattern is recorded on a digital camera during the digital
Le Thanh Bang +4 more
doaj +1 more source
IEEE Photonics Journal, 2021 Power scaling of continuous-wave, narrow-linewidth fiber lasers are limited by the onset of stimulated Brillouin scattering (SBS) which manifests at threshold as potentially damaging, peak power, backward propagating pulses.
Roopa Prakash +2 more
doaj +1 more source
Photonics, 2022 High-power laser pulse transmitted by phase modulation with certain spectrum distribution can suppress the buildup of transverse stimulated Brillouin scattering (TSBS) in large aperture laser optics and smooth the speckle pattern illuminating the target ...
Xinlei Qian +6 more
doaj +1 more source
Measuring the Reflection Matrix of a Rough Surface
Applied Sciences, 2017 Phase modulation methods for imaging around corners with reflectively scattered light required illumination of the occluded scene with a light source either in the scene or with direct line of sight to the scene. The RM (reflection matrix) allows control
Kenneth Burgi +3 more
doaj +1 more source
High-Resolution Optical Fiber Temperature Sensor Based on Draw Tower Grating Array
Sensors, 2022 Ocean temperature monitoring is of great significance to marine fishing, aquaculture, and marine operations. Traditional electric sensors lack the potential to multiplex several sensors, and may suffer from electromagnetic interference.
Hanjie Liu +5 more
doaj +1 more source
Applied Sciences, 2016 Phase front modulation was previously used to refocus light after transmission through scattering media. This process has been adapted here to work in reflection.
Kenneth Burgi +3 more
doaj +1 more source
Irrotational Nanobricks Based High-Efficiency Polarization-Independence Metasurfaces
IEEE Photonics Journal, 2020 The polarization-independence optical metasurface has attracted great interests due to breaking the polarization limitations. In general, polarization-independence characteristics of metasurface almost always originates from the polarization-independence
Wei Wang +5 more
doaj +1 more source
Design and generation of structured array beams with shape-invariant properties
New Journal of Physics, 2023 We theoretically propose and experimentally demonstrate a flexible approach to generate an arbitrary shape-invariant structured array beam during propagation with the prescribed intensity distribution.
Yuqiu Zhang +7 more
doaj +1 more source
A New Method for Total Fat Detection in Raw Milk Based on Dual Low-Coherence Interferometer
Sensors, 2019 The present work experimentally demonstrates a multimode fiber optic sensing setup for total fat detection in raw milk samples. The optical fiber arrangement incorporates a low-coherence Fabry−Perot cavity operating in dual response.
Abraham Gastélum-Barrios +4 more
doaj +1 more source
Controllable linear $\pi$-phase modulation in a thermal atom vapor without diffraction or absorption [PDF]
, 2014 A scheme is proposed to achieve substantial controllable phase modulation for a probe field propagating through a thermal atomic vapor in double-$\Lambda$ configuration.
Evers, Jörg, Zhang, Lida
core +3 more sources