ATLAS Collaboration’s Post

An Optics Express [#OPG_OpEx] study from the University of Toronto presents results toward realizing an adaptive optics system without a deformable mirror for free-space optical receivers: https://bit.ly/3Wwtl7D The research team proposes a photonic integrated circuit capable of spatially sampling the wavefront collected by the telescope and co-phasing the subapertures to maximize the flux delivered to an output single-mode fiber as the integrated photonic implementation of a deformable mirror. During their research, they performed simulations to predict the total optical power delivered by silicon photonics wavefront correctors designed to efficiently couple light into single-mode fibers in the presence of atmospheric turbulence. Written by: Dhwanil Patel, Momen Diab, Ross Cheriton, Jacob Taylor, Libertad Rojas, Martin Vachon, Dan-Xia Xu, Jens H. Schmid, Pavel Cheben, Siegfried Janz, and Suresh Sivanandam #photonics #physics #lightscience #optics

#resfusion3 "Induction System for a Fusion Reactor: Quantum Mechanics Chained up" Publication in the Journal of High Energy Physics, Gravitation and Cosmology Vol.10 No.1 2024 https://lnkd.in/ethBQ--B 3rd Chapter : Track fidelity by eliminating turbulence. In a tubular plasma, that is arranged as a double helix, equally distanced to a midpoint and which is being enclosed in a plasma vessel, surrounded at regular intervals by a large number of Helmholtz coils , all magnetic field lines will lay on the surface of transformation spheres with the very same radius. While the midpoint of the fusion reactor defines a central sphere for the central magnetic field line, off-center midpoints define transformation spheres with off-center magnetic field lines and are organized in concentric layers around the midpoint of the fusion reactor. While the central magnetic field line is composed of four semicircular arcs with four complanar connecting points and four complanar vertices, off center magnetic field lines are composed of four elliptical arcs with four non-complanar connecting points and four non-complanar vertices. The Helmholtz-coils in functional unity with the chiasmus of the magnetic field lines enforce equal path lengths for charged particles in each separate tubular layer of the magnetic field, whereby both halves of the double helix are arranged opposite to each other in mirrored symmetry. Interacting with the Lorenz force, induced by the Helmholtz coils, the angular momentum axes of particles with spin quantum number 1/2 are aligning parallel to the magnetic field lines and thus follow the magnetic flux direction. Mirror-symmetry of the double helix is of crucial importance to obtain a dynamic balance of the particles' torques as preposition for their track fidelity. The fact that the spin of the particles in each of the four semicircular arcs changes from an upward spin to a downward spin in both halves of the double helix leads to the effect that torques of the particles are cancelling out each other in both halves of the double helix. Thereby each particle rotates once around its own axis of angular momentum with an angular sum of 360 degrees, whereby including an antagonistic particle the angular sum is 720 degrees, thus satisfying the spin regime. #solution4fusion #resfusion3 #plasmaphysics #isaset2024 #islop2024 #gemson2024 #optics2024 #asktheinventor #theländ www.res-institute.com

The Sagnac effect is an optical phenomenon that occurs when light travels along a closed loop in opposite directions. Due to the Earth's rotation, the two beams experience a phase shift, resulting in an interference pattern. This effect is utilized in various applications such as ring laser gyroscopes for navigation and measuring rotation rates. Read More: https://lnkd.in/d7PCXSMT #Insights #Photonics #Industry #Article #Laws #Physics #Imaging

🔭 What do an optical profiler and a gravitational waves sensor have in common? 🌌 In celebration of the #InternationalDayofAstronomy on October 12, let's explore the surprising connection between microscopes 🔬 and gravitational wave sensors 🌠. Both rely on the same powerful physical principle: wave superposition, which is used in interferometry. In microscopes, #interferometry helps pinpoint the exact focal point of a surface's topography. Meanwhile, in Virgo's gravitational sensor, interferometry detects distortions in light caused by massive cosmic events, such as the formation of black holes 🕳️. Even more exciting, our interferometry technology has been used to enhance certain parts of VIRGO's interferometer—manufactured by IFAE —helping push the boundaries of gravitational wave detection 🚀. Curious to know more? Check out our case study with IFAE ➡️https://lnkd.in/eJ2RUx8T

For nearly 50 years, CCD has ruled in astronomy and electronics, but CMOS is rising fast. Unsure which is right for you? This guide breaks down the evolution, workings, and advantages of both, helping you navigate the sensor landscape. Download the guide here: https://lnkd.in/e5FKUwYv #DiffractionLimited #AstronomicalImaging #AstronomyPhotography #TelescopeImaging #Astrophotography #CosmicImaging #SpacePhotography

Quantum light, The Higgs boson, predicted theoretically since the 1960s, was finally detected in 2012 at the CERN laboratory in Europe. As a quantum field it permeates all of space, through which other particles move, acquiring mass via their interaction with the Higgs field that can be roughly envisioned as a kind of resistance to their motion. Many properties of the Higgs boson, including how it interacts with other particle and their associated fields, have already been measured to be consistent with predictions of the Standard Model. But one Higgs decay mode that had yet to be investigated was a theoretical prediction that a Higgs boson would occasionally decay and produce a photon, the quantum of light, and a Z boson, which is an uncharged particle that together with the two W bosons conveys the weak force. #quantumphysicstechnology #aromaticgraphene #greenchemistry

The Sagnac effect is an optical phenomenon that occurs when light travels along a closed loop in opposite directions. Due to the Earth's rotation, the two beams experience a phase shift, resulting in an interference pattern. This effect is utilized in various applications such as ring laser gyroscopes for navigation and measuring rotation rates. Read More: https://lnkd.in/d7PCXSMT #Insights #Photonics #Industry #Article #Laws #Physics #Imaging

The Tokamak and Stellarator are challenged by the Looperator. 11th Chapter : The geometry of the central magnetic field line m1 and its relationship to π is illustrated in the adjacent figure. The sphere with a radius of r1 represents the central magnetic field line m1. The length of the magnetic field line m1 is determined by four semicircular arcs that are connected to each other at four connection points J1-J4 lying in a plane β. If the radius rB is defined by the number 1, then the radius r1 is found by multiplying rB by the square root of 2, which is the hypotenuse of an equilateral triangle. The length of the spherical double helix is determined by 4π, which corresponds to twice the circumference of a sphere defined by the radius rB. It can be demonstrated that unwound, decentralised magnetic field lines exhibiting spatial curvature are of equivalent length to the central magnetic field line m1. The length of the spherical double helix is determined by 4π, which is twice the circumference of a sphere defined by the radius rB. It can be shown that the unwound, decentralised magnetic field lines, which exhibit spatial curvature, are of the same length as the central magnetic field line m1. The regularity of these dimensions allows the transformation sphere to be assigned to the Poincaré group, which characterises the motion of electrons and ions on infinite loops with the Lorenz transformation, rotation and translation. The Lorenz force is always tangential to the plasma volume. The direction of the trajectories of the electrons and ions is self-organizing due to a balance of forces in both halves of the double helix and due to topological conditions determined by the respective radius of gyration of the particles around the magnetic field lines. This causes a continuous curvature and twisting of the magnetic field lines. The spherical double helix can therefore be reconciled with general relativity as a universal space-time loop.  Journal of High Energy Physics, Gravitation and Cosmology > Vol.10 No.1, January 2024. https://lnkd.in/ethBQ--B #Looperator #solution4fusion #resfusion11 #plasmaphysics #rsenergy2024 #isaset2024 #islop2024 #gemson2024 #blochwall #asktheinventor #excellence from #theländ www.res-institute.com

Membrane-based cavity optomechanical systems have been widely successful, but face limitations with their chip-scale integration: https://lnkd.in/eP48gnRS A University of Arizona team presents a solution based on metasurface design that enables the formation of a stable optical cavity with a plane end-mirror. The mirror, in combination with phononic engineering, offers a route towards high-cooperativity, vertically integrated cavity optomechanical systems with applications ranging from precision force sensing to hybrid quantum transduction. Written by: A. R. Agrawal, J. Manley, D. Allepuz-Requena, and D. J. Wilson Published in #OPG_Optica #mirrors #engineering #technology #optics #photonics #physics

Quantum Quirks Episode 5: Laser Cooling of Atoms (Part 2) In this second part of our deep-dive into Laser Cooling of Atoms, we uncover the fate of the absorbed photons. When electrons transition back to their original states, the emitted photons scatter in all directions, resulting in a net zero effect on the atom's momentum. Combining this with the initial momentum reduction achieves an overall reduction in the speed of the atoms, thereby inducing a cooling effect. But what about the effect of lasers from directions other than that opposite to the atom’s movement? Here's the twist: by red-shifting (reducing the frequency) the lasers, we ensure only the photons moving opposite to the atoms' direction are perceived at the intended frequency due to the Doppler Effect. This strategic use of lasers allows precise cooling of atoms moving in different directions, showcasing the delicate interplay of physics at the atomic level. #quantumphysics #coldatominterferometry #modernphysics #lasercooling #quantumtechnology #quantumsensing #atomionics #quantumgravimeter #quantumquirks #matterwavesmatter