Results 11 to 20 of about 562,479 (274)
Guidestar-free image-guided wavefront shaping [PDF]
Science Advances, 2021 Optical imaging through turbid samples and fibers is made possible by adaptive correction of scattering guided by image quality.
Yeminy, Tomer, Katz, Ori
core +6 more sources
On-chip wavefront shaping in spacing-varied waveguide arrays [PDF]
Nanophotonics, 2023 The ability to manipulate light propagation sets the foundations for optical communication and information processing systems. With the ever-growing data capacity and data rate, photonic integrated circuits have attracted increasing attentions of ...
Niu Yunfei +6 more
doaj +4 more sources
Wavefront Shaping with Varying Degrees of Freedom [PDF]
EPJ Web of ConferencesOptical wavefront shaping employs the linearity of scattering to focus light through scattering media using spatial modulation. By selectively switching off weakly-contributing segments, we significantly improve optimization speeds with minimal intensity
Hubert Maël +5 more
doaj +8 more sources
Model-based wavefront shaping microscopy [PDF]
Optics Letters, 2020 Wavefront shaping is increasingly being used in modern microscopy to obtain high-resolution images deep inside inhomogeneous media. Wavefront shaping methods typically rely on the presence of a “guide star” to find the optimal wavefront to mitigate the scattering of light. However, the use of guide stars poses severe limitations.
Thendiyammal, Abhilash +3 more
core +10 more sources
Noise-tolerant wavefront shaping in a Hadamard basis [PDF]
Optical Coherence Imaging Techniques and Imaging in Scattering Media IV, 2021 Light scattering is the main limitation for optical imaging. However, light can be focused through or inside turbid media by spatially shaping the incident wavefront. Wavefront shaping is ultimately limited by the available photon budget. We developed a new ‘dual reference’ wavefront shaping algorithm that optimally uses the available light. Our method
Bahareh Mastiani, Ivo M. Vellekoop
core +7 more sources
Feedback-based wavefront shaping [PDF]
Optics Express, 2015 Light scattering was thought to be the fundamental limitation for the depth at which optical imaging methods can retain their resolution and sensitivity. However, it was shown that light can be focused inside even the most strongly scattering objects by spatially shaping the wavefront of the incident light.
Vellekoop, Ivo M.
openaire +5 more sources
2025 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)We do multicolor wavefront shaping with a digital micromirror device (DMD). DMDs are popular shaping devices with superior modulation rates. However, DMDs have angular dispersion, hindering broadband operation. Therefore, we developed a new Lee-holography technique; the same setup can now be used for different wavelengths without having to change or ...
Mulder, L. (Bert) +4 more
core +5 more sources
Inverse theory of wavefront shaping in nonlinear scattering media [PDF]
Nature CommunicationsScattering fundamentally limits the propagation of light in complex media, yet controlling it is essential for transformative advances in imaging, sensing, and optical communication.
Daixuan Wu +11 more
doaj +2 more sources
Adaptive wavefront shaping for flow-field measurements [PDF]
SPIE Proceedings, 2016 In this contribution we use wavefront shaping approaches for image correlation based flow-field measurements for the first time. Aberrations introduced by a single phase boundary in the detection beam path were explored. Variations of the optical path-length result in strong errors in position allocation and thus to an enhancement of the measurement ...
Koukourakis, N. +3 more
openaire +4 more sources
On-chip wavefront shaping with dielectric metasurface [PDF]
Nature Communications, 2019 Metasurfaces can be programmed for a spatial transformation of the wavefront, allowing on-chip optical signal processing. Here, the authors demonstrate a one-dimensional high-contrast transmitarray metasurface-based lens on SOI substrate and demonstrate ...
Zi Wang +5 more
doaj +3 more sources