Results 51 to 60 of about 21,925,565 (312)

Probing vacuum birefringence using x-ray free electron and optical high-intensity lasers

, 2016
Vacuum birefringence is one of the most striking predictions of strong field quantum electrodynamics: Probe photons traversing a strong field region can indirectly sense the applied "pump" electromagnetic field via quantum fluctuations of virtual charged
Karbstein, Felix, Sundqvist, Chantal
core   +1 more source

Development of low- and high-birefringence optical fibers

IEEE Journal of Quantum Electronics, 1982
The polarization properties of single-mode optical fibers are easily modified by environmental factors. While this can be exploited in a number of fiber sensor devices, it can be troublesome in applications where a stable output polarization-state is required.
Payne, D.N., Barlow, A.J., Ramskov Hansen, J.J.   +2 more
openaire   +3 more sources

Probing Physics in Vacuum Using an X-ray Free-Electron Laser, a High-Power Laser, and a High-Field Magnet

, 2017
A nonlinear interaction between photons is observed in a process that involves charge sources. To observe this process in a vacuum, there are a growing number of theoretical and experimental studies.
Asai, S., Fan, X., Inada, T., Kamioka, S., Namba, T., Seino, Y., Yamaji, T., Yamazaki, T.   +7 more
core   +1 more source

Experiment and modelling of birefringent flows using commercial CFD code [PDF]

, 2006
It is well-known that certain fluids are birefringent and when flows are viewed in polarised light interference fringes are observed. The fringes are caused by a phase shift in the light passing through the fluid and are proportional to the integral of ...
Aben, Clemeur, D. Pugh, Dally, Davidson, Grillet, Li, Mach, Martyn, Maxwell, R.A. Tomlinson, S.B.M. Beck, Shtennikova, Subramanian, Sun, Verbeeten   +15 more
core   +1 more source

Intermolecular Interactions as Driving Force of Increasing Multiphoton Absorption in a Perylene Diimide‐Based Coordination Polymer

Advanced Functional Materials, EarlyView.
This study uncovers the unexplored role of intermolecular interactions in multiphoton absorption in coordination polymers. By analyzing [Zn2tpda(DMA)2(DMF)0.3], it shows how the electronic coupling of the chromophores and confinement in the MOF enhance two‐and three‐photon absorption.
Simon Nicolas Deger, Anna Mauri, Yang Cui, Sebastian Josef Weishäupl, Ali Deniz Özdemir, Hamad Syed, Aleksandr Ovsianikov, Wolfgang Wenzel, Alexander Pöthig, Jürgen Hauer, Mariana Kozlowska, Roland Augustinus Fischer   +11 more
wiley   +1 more source

Modified Octagonal Photonic Crystal Fiber for Residual Dispersion Compensation over Telecommunication Bands [PDF]

Radioengineering, 2018
A modified Octagonal Photonic Crystal Fiber (MO-PCF) is proposed and numerically investigated for the purpose of residual dispersion compensation in the optical transmission link.
R. Ahmad, M. Komanec, D. Suslov, S. Zvanovec   +3 more
doaj  

Birefringence analysis of segmented cladding fiber [PDF]

, 2012
We present a full-vectorial modal analysis of a segmented cladding fiber (SCF). The analysis is based on the H-field vectorial finite element method (VFEM) employing polar mesh geometry.
Agrawal, Duan, Hwang, Kejalakshmy, Koshiba, Liu, Millo, Okamoto, Rahman, Rastogi, Rastogi, Yeung, Zhu   +12 more
core   +1 more source

Modulating Two‐Photon Absorption in a Pyrene‐Based MOF Series: An In‐Depth Investigation of Structure–Property Relationships

Advanced Functional Materials, EarlyView.
This study investigates H4TBAPy‐based metal–organic frameworks (MOFs) ‐ NU‐1000, NU‐901, SrTBAPy, and BaTBAPy ‐ for multiphoton absorption (MPA) performance. It observes topology‐dependent variations in the 2PA cross‐section, with BaTBAPy exhibiting the highest activity.
Simon N. Deger, Helmy Pacheco Hernandez, Yang Cui, Hongxing Hao, Vanessa Ramm, David C. Mayer, Khai‐Nghi Truong, Roland A. Fischer, Jürgen Hauer, Mariana Kozlowska, Alexander Pöthig   +10 more
wiley   +1 more source

Development of a Mercury Bromide Birefringence Measurement System Based on Brewster’s Angle

Sensors, 2023
Mercury bromide (Hg2Br2) has been used to develop acousto-optic tunable filters (AOTFs) because it has several advantages, including a high refractive index, a broad optical bandwidth, and a relatively high figure of merit.
Oh-Tae Kwon, Geonwoo Kim, Hyungjin Bae, Jaeyeol Ryu, Sikwan Woo, Byoung-Kwan Cho   +5 more
doaj   +1 more source

Detection of Vacuum Birefringence with Intense Laser Pulses

, 2004
We propose a novel technique that promises hope of being the first to directly detect a polarization in the quantum electrodynamic (QED) vacuum. The technique is based upon the use of ultra-short pulses of light circulating in low dispersion optical ...
Aleksandrov, Andre N. Luiten, Askenazy, Bakalov, Becker, Black, Bondu, Bregant, Brunner, Burke, Cameron, Day, Diddams, Drever, Euler, Hall, Heisenberg, Heyl, Hils, Jesse C. Petersen, Jones, Jones, Jones, Lee, Ma, Petersen, Schwinger, Uehara, Walsh, Weisskopf, Wilson   +30 more
core   +1 more source