Results 61 to 70 of about 48,622 (298)
Active Control of Laser Wavefronts in Atom Interferometers
, 2017 Wavefront aberrations are identified as a major limitation in quantum sensors. They are today the main contribution in the uncertainty budget of best cold atom interferometers based on two-photon laser beam splitters, and constitute an important limit ...
Langlois, Mehdi +3 more
core +2 more sources
Predictive control of thermally induced wavefront aberrations
Optics Express, 2013 In this paper we experimentally demonstrate the proof of concept for predictive control of thermally induced wavefront aberrations in optical systems. On the basis of the model of thermally induced wavefront aberrations and using only past wavefront measurements, the proposed adaptive optics controller is able to predict and to compensate the future ...
Haber, A. (author) +5 more
openaire +4 more sources
Ultrasound in Women's Health: Mechanisms, Applications, and Emerging Opportunities
Advanced Materials, EarlyView.As healthcare moves toward decentralization, ultrasound technologies are evolving from strictly imaging tools in clinical settings into versatile diagnostic and therapeutic platforms, with growing roles addressing women's health needs. This review highlights how ultrasound's underlying physical mechanisms can be harnessed to reduce disparities in women'
Sarah B. Ornellas +7 more
wiley +1 more source
IEEE AccessMetasurfaces can achieve multifunctional wavefront control, but most co-polarized metasurfaces can only achieve a 360° phase coverage at specific frequency points. In this paper, we propose a metasurface with efficient co-polarized Terahertz (THz)
Su Zong, Jiajun Liang
doaj +1 more source
Photonics, 2023 We implemented the common-path achromatic interfero-coronagraph both for the wavefront sensing and the on-axis image component suppression, aiming for the stellar coronagraphy.
Andrey Yudaev +5 more
doaj +1 more source
Wavefront sensing with a brightest pixel selection algorithm
, 2011 Astronomical adaptive optics systems with open-loop deformable mirror control have recently come on-line. In these systems, the deformable mirror surface is not included in the wavefront sensor paths, and so changes made to the deformable mirror are not ...
A. G. Basden +16 more
core +2 more sources
Advanced Materials Technologies, EarlyView.Hybrid‐filled voxel AM enables integration of high‐permittivity materials into additively manufactured devices. Using this approach, a graded refractive index (GRIN) lens is demonstrated, achieving a 50% antenna size reduction with enhanced directivity.
Qianfang Zheng +4 more
wiley +1 more source
Single-photon entanglement generation by wavefront shaping in a multiple-scattering medium
, 2014 We demonstrate the control of entanglement of a single photon between several spatial modes propagating through a strongly scattering medium. Measurement of the scattering matrix allows the wavefront of the photon to be shaped to compensate the ...
Barbieri, Marco +6 more
core +3 more sources
Atmospheric tomography with separate minimum variance laser and natural guide star mode control [PDF]
, 2009 This paper introduces a novel, computationally efficient, and practical atmospheric tomography wavefront control architecture with separate minimum variance laser and natural guide star mode estimation.
Ellerbroek, B. L., Gilles, L.
core +1 more source
Advanced Materials Technologies, EarlyView.Combined approach of electromagnetic (Power) and ultrasound (data harvesting) waves is proposed to address the miniaturized ultrasonic implants. Electromagnetic waves trigger the piezoelectric element to generate the acoustic pulse which is modulated by the variations in the sensor's impedance.
Anam Bhatti +6 more
wiley +1 more source