Tootfinder

Achieving 70 Gb/s Over A VCSEL-Based Optical Wireless Link Using A Multi-Mode Fiber-Coupled Receiver
Hossein Kazemi, Isaac N. O. Osahon, Nikolay Ledentsov Jr., Ilya Titkov, Nikolay Ledentsov, Harald Haas
https://arxiv.org/abs/2506.18864

Achieving 70 Gb/s Over A VCSEL-Based Optical Wireless Link Using A Multi-Mode Fiber-Coupled Receiver
In this paper, we demonstrate a laser-based optical wireless communication (OWC) system employing a 940 nm single-mode (SM) vertical cavity surface emitting laser (VCSEL) and a multi-mode (MM) fiber-coupled receiver, achieving a record data rate beyond 70 Gb/s, while the optical transmit power is below 5 mW. The use of a high speed fiber-optic photoreceiver avoids limiting the communication bandwidth by the receiver, enabling ultra-high capacity and energy-efficient light fidelity (LiFi) links …

Combined frequency comb and continuous wave cavity-enhanced optical-optical double-resonance spectrometer in the 1.7 ${\mu}$m range
Vinicius Silva de Oliveira, Adrian Hj\"alt\'en, Isak Silander, Andrea Rosina, Michael Rey, Kevin K. Lehmann, Aleksandra Foltynowicz
https://arxiv.org/abs/2506.17669

Combined frequency comb and continuous wave cavity-enhanced optical-optical double-resonance spectrometer in the 1.7 $μ$m range
We present an optical-optical double-resonance (OODR) spectrometer based on a 3.3 $μ$m continuous wave pump and two cavity-enhanced probes: a frequency comb tunable in the 1.64 - 1.8 $μ$m range, and a comb-referenced continuous wave (CW) laser tunable in the 1.6 - 1.75 $μ$m range. The comb probe provides broad spectral coverage (bandwidth up to 7 THz) for simultaneous detection of many sub-Doppler OODR transitions with sub-MHz line position accuracy, while the CW probe allows targeting indiv…

iOS 26 Developer Beta 2: Apple entglast das iPhone wieder etwas
Die erste Vorabversion von iOS 26 bekam eine Menge Kritik ab. Die zweite bringt eine Menge Verbesserungen, darunter solche optischer Art.

X-ray and Optical Analysis of the Prototype Polar AN UMa
S. Ok, M. Yardimci, B. Kalomeni, A. Schwope
https://arxiv.org/abs/2506.18553 https://

X-ray and Optical Analysis of the Prototype Polar AN UMa
We present a long-term optical and X-ray photometric study of AN UMa, one of the prototypical polar-type cataclysmic variables, tracing more than 34 years of its accretion history. Observations from both ground-based and space-based facilities have been analysed to investigate state transitions within the system. Throughout this period, significant changes in the light curve have been observed, corresponding to different mass accretion states. From four years of TESS photometry, we derive a rev…

Replaced article(s) found for physics.optics. https://arxiv.org/list/physics.optics/new
[1/1]:
- Principles and Metrics of Extreme Learning Machines Using a Highly Nonlinear Fiber
Mathilde Hary, Daniel Brunner, Lev Leybov, Piotr Ryczkowski, John M. Dudley, Go\&qu…

Replaced article(s) found for physics.optics. https://arxiv.org/list/physics.optics/new
[1/1]:
- One-time measurement to characterize complex amplitude single component in symmetry superposed op...
Chen Wang, Yuan Ren

Universality and non-differentiability: A new perspective on angular dispersion in optics
Layton A. Hall, Murat Yessenov, Kenneth L. Schepler, Ayman F. Abouraddy
https://arxiv.org/abs/2506.18858

Universality and non-differentiability: A new perspective on angular dispersion in optics
Angular dispersion (AD) is a ubiquitous phenomenon in optics after light traverses a diffractive or dispersive device, whereby each wavelength propagates at a different angle. AD is useful in a variety of applications; for example, modifying the group velocity or group-velocity dispersion of pulsed lasers in free space or optical materials, which are essential ingredients in group-velocity matching and dispersion compensation. Conventional optical components introduce `differentiable' AD, so th…

Analyzing partially-polarized light with a photonic deep random neural network
Alessandro Petrini, Claudio Conti, Davide Pierangeli
https://arxiv.org/abs/2506.17952

Analyzing partially-polarized light with a photonic deep random neural network
Optical neural networks are emerging as a powerful and versatile tool for processing optical signals directly in the optical domain with superior speed, integrability, and functionality. Their application to optical polarization enables neuromorphic polarization sensors, but their operation is limited to fully-polarized light. Here, we demonstrate single-shot analysis of partially-polarized beams with a photonic random neural network (PRNN). The PRNN is composed of a series of optical layers im…

Optically tunable linear and nonlinear enhancement of index of refraction
Elif Ozturk, Hira Asif, Mehmet Gunay, Mehmet Emre Tasgin, Ramazan Sahin
https://arxiv.org/abs/2506.17703 …

Optically tunable linear and nonlinear enhancement of index of refraction
Control of optical properties of materials by tuning their refractive index can revolutionize the current state-of-the-art technology to manipulate light propagation in the high loss media. Here we demonstrate active optical tuning of the plasmonic analog of enhancement of index of refraction (EIR) in both linear and nonlinear regimes using a quantum mechanical approach. By employing a pump-probe scheme, we investigate the tuning of refractive index of the probe field by varying amplitude and p…

Solid-State Optical Magnetometer: Next-Generation Approach to Sub-Nanotesla Magnetic Sensing
O. Daneshmandi, M. Alidadi, Y. M. Banad, S. S. Sharif
https://arxiv.org/abs/2506.18111

Solid-State Optical Magnetometer: Next-Generation Approach to Sub-Nanotesla Magnetic Sensing
We present a Solid-State Optical Magnetometer (SOM) based on black phosphorus (BP) multilayers, offering a compact, scalable, and highly sensitive alternative to traditional atomic-based magnetometers. Utilizing BP's intrinsic linear dichroism in a metasurface cavity, the SOM achieves sub-nanotesla precision and vector magnetic field sensing. BP enhances light-matter interactions, enabling tunable optical responses driven by Lorentz force-induced cavity deformation. Optimized metasurface unit c…