Results 171 to 180 of about 239,453 (286)

Accuracy characterization of Shack–Hartmann sensor with residual error removal in spherical wavefront calibration

Light: Advanced Manufacturing
The widely used Shack–Hartmann wavefront sensor (SHWFS) is a wavefront measurement system. Its measurement accuracy is limited by the reference wavefront used for calibration and also by various residual errors of the sensor itself.
Yi He, Mingdi Bao, Yiwei Chen, Hong Ye, Jinyu Fan, Guohua Shi   +5 more
doaj   +1 more source

Rapid wavefront shaping using an optical gradient acquisition [PDF]

arXiv
Wavefront shaping systems aim to image deep into scattering tissue by reshaping incoming and outgoing light to correct aberrations caused by tissue inhomogeneity However, the desired modulation depends on the unknown tissue structure and therefore its estimation is a challenging time-consuming task.
arxiv  

Shack-Hartmann wavefront sensor sensitivity loss factor estimation in partial correction regime [PDF]

, 2017
Guido Agapito, Carmelo Arcidiacono, Simone Esposito   +2 more
openalex   +1 more source

Wavefront correction enables vibrational imaging of bacteria with multimode fibre probes [PDF]

, 2017
Ivan Gusachenko, Mingzhou Chen, Kishan Dholakia   +2 more
openalex   +1 more source

Correction of wavefront rotation between interferometer and shack-hartmann sensor using bending modes [PDF]

, 2020
Yi Zhu, Tao Chen, Hongzhuang Li
openalex   +1 more source

Assessment of Practical Satellite Quantum Key Distribution Architectures for Current and Near‐Future Missions

International Journal of Satellite Communications and Networking, Volume 43, Issue 3, Page 164-192, May/June 2025.
ABSTRACT Quantum key distribution (QKD) allows the generation of cryptographic keys beyond the computational hardness paradigm and is befitting for secure data transmission requiring long‐term security. The communication distance of fiber‐based QKD, however, is limited to a few hundred kilometers due to the exponential scaling of signal attenuation ...
Davide Orsucci, Philipp Kleinpaß, Jaspar Meister, Innocenzo De Marco, Stefanie Häusler, Thomas Strang, Nino Walenta, Florian Moll   +7 more
wiley   +1 more source

The future looks dark: improving high contrast imaging with hyper-parameter optimization for data-driven predictive wavefront control [PDF]

arXiv
The direct imaging and characterization of exoplanets requires extreme adaptive optics (XAO), achieving exquisite wavefront correction (upwards of 90$\%$ Strehl) over a narrow field of view (a few arcseconds). For these XAO systems the temporal error is often a leading term in the error budget, wherein the wavefront evolves faster than the lag between ...
arxiv  

Wavefront Correction Using Micromirror Arrays: Comparing the Efficacy of Tip-Tilt-Piston and Piston- Only Micromirror Arrays

, 2006
William C. Sweatt, Olga B. Spahn, William D. Cowan, David Wick   +3 more
openalex   +2 more sources

Reflections on the Spatial Exponential Growth of Electromagnetic Quasinormal Modes

Laser &Photonics Reviews, Volume 19, Issue 9, May 6, 2025.
Quasinormal modes (QNMs) offer a robust framework for understanding the physics of resonators. However, conceptual challenges arise in regions distant from resonators, where QNM fields exponentially grow. This growth is not unphysical, but gives rise to counterintuitive effects, which is explained by examining fundamentals of non‐Hermitian systems ...
Tong Wu, José Luis Jaramillo, Philippe Lalanne   +2 more
wiley   +1 more source

Wavefront correction of spatial light modulators using an optical vortex image

, 2007
Alexander Jesacher, Andreas Schwaighofer, Severin Fürhapter, Christian Maurer, Stefan Bernet, Monika Ritsch‐Marte   +5 more
openalex   +1 more source