Optimization of Virtual Shack-Hartmann Wavefront Sensing [PDF]
Sensors, 2021 Virtual Shack–Hartmann wavefront sensing (vSHWS) can flexibly adjust parameters to meet different requirements without changing the system, and it is a promising means for aberration measurement.
Xian Yue +5 more
doaj +2 more sources
A demonstration of wavefront sensing and mirror phasing from the image domain [PDF]
, 2014 In astronomy and microscopy, distortions in the wavefront affect the dynamic range of a high contrast imaging system. These aberrations are either imposed by a turbulent medium such as the atmosphere, by static or thermal aberrations in the optical path,
Benjamin Pope +5 more
openalex +5 more sources
Using the generalised-optical differentiation wavefront sensor for laser guide star wavefront sensing [PDF]
arXiv, 2020 Laser guide stars (LGS) are used in many adaptive optics systems to extend sky coverage. The most common wavefront sensor used in combination with a LGS is a Shack-Hartmann wavefront sensor (SHWFS). The Shack-Hartmann has a major disadvantage for extended source wavefront sensing because it directly samples the image.
Sebastiaan Y. Haffert +2 more
arxiv +3 more sources
Differential wavefront sensing and control using radio-frequency optical demodulation [PDF]
, 2021 Differential wavefront sensing is an essential technique for optimising the performance of many precision interferometric experiments. Perhaps the most extensive application of this is for alignment sensing using radio-frequency beats measured with quadrant photodiodes.
Daniel D. Brown +4 more
arxiv +2 more sources
Underwater Turbulence Detection Using Gated Wavefront Sensing Technique [PDF]
Sensors, 2018 Laser sensing has been applied in various underwater applications, ranging from underwater detection to laser underwater communications. However, there are several great challenges when profiling underwater turbulence effects.
Ying Bi +4 more
doaj +2 more sources
Spexwavepy: an open-source Python package for X-ray wavefront sensing using speckle-based techniques [PDF]
Journal of Synchrotron RadiationIn situ wavefront sensing plays a critical role in the delivery of high-quality beams for X-ray experiments. X-ray speckle-based techniques stand out among other in situ techniques for their easy experimental setup and various data acquisition modes ...
Lingfei Hu +2 more
doaj +2 more sources
Angle-sensitive pixel design for wavefront sensing [PDF]
arXiv, 2013 Conventional image sensors are only responsive to the intensity variation of the incoming light wave. By encoding the wavefront information into the balanced detection scheme, we demonstrate an image sensor pixel design that is capable to detect both the local intensity and wavefront information simultaneously.
Guoan Zheng
arxiv +3 more sources
Experimental wavefront sensing techniques based on deep learning models using a Hartmann-Shack sensor for visual optics applications [PDF]
Scientific ReportsWavefront sensing is essential in visual optics for evaluating the optical quality in systems, such as the human visual system, and understanding its impact on visual performance. Although traditional methods like the Hartmann-Shack wavefront sensor (HSS)
Juan Sebastián Ramírez-Quintero +3 more
doaj +2 more sources
Shack-Hartmann Wavefront Sensing of Ultrashort Optical Vortices [PDF]
Sensors, 2021 Light beams carrying Orbital Angular Momentum (OAM), also known as optical vortices (OV), have led to fascinating new developments in fields ranging from quantum communication to novel light–matter interaction aspects. Even though several techniques have
Alok Kumar Pandey +4 more
doaj +2 more sources
Integrated coronagraphy and wavefront sensing with the PIAACMC [PDF]
, 2023 Uncorrected wavefront errors create speckle noise in high-contrast observations at small inner-working angles. These speckles can be sensed and controlled by using coronagraph integrated wavefront sensors. Here, we will present how the Phase Induced Amplitude Apodized Complex Mask Corongraph (PIAACMC) can be integrated with both a Self-Coherent Camera (
Sebastiaan Y. Haffert +2 more
arxiv +3 more sources