Results 41 to 50 of about 1,208,254 (376)

Optical-approximation analysis of sidewall-spacing effects on the force between two squares with parallel sidewalls [PDF]

open access: yes, 2007
Using the ray-optics approximation, we analyze the Casimir force in a two dimensional domain formed by two metallic blocks adjacent to parallel metallic sidewalls, which are separated from the blocks by a finite distance h.
Jaffe, Robert L.   +3 more
core   +1 more source

Atom optics with microfabricated optical elements [PDF]

open access: yesConference Digest. 2000 International Quantum Electronics Conference (Cat. No.00TH8504), 2000
We introduce a new direction in the field of atom optics, atom interferometry, and neutral-atom quantum information processing. It is based on the use of microfabricated optical elements. With these elements versatile and integrated atom optical devices can be created in a compact fashion.
Gerhard Birkl   +3 more
openaire   +4 more sources

Adaptive optics based on machine learning: a review

open access: yesOpto-Electronic Advances, 2022
Adaptive optics techniques have been developed over the past half century and routinely used in large ground-based telescopes for more than 30 years. Although this technique has already been used in various applications, the basic setup and methods have ...
Youming Guo   +7 more
semanticscholar   +1 more source

Optical-component-only adaptive optics

open access: yesOptics Letters, 2021
This Letter introduces a technique for performing binary adaptive optics, which is carried out by optical components only, without the help of any electronic or optoelectronic device. In this technique, the interferogram produced by a point diffraction interferometer modulates a light-driven crystal. The modulated light-driven crystal may produce pupil-
Pérez Cagigal, Manuel   +4 more
openaire   +4 more sources

A Review of Compressive Sensing in Information Security Field

open access: yesIEEE Access, 2016
The applications of compressive sensing (CS) in the field of information security have captured a great deal of researchers' attention in the past decade. To supply guidance for researchers from a comprehensive perspective, this paper, for the first time,
Yushu Zhang   +5 more
doaj   +1 more source

Exceptional points in optics and photonics

open access: yesScience, 2019
Exceptional points in optics Many complex systems operate with loss. Mathematically, these systems can be described as non-Hermitian. A property of such a system is that there can exist certain conditions—exceptional points—where gain and loss can be ...
M. Miri, A. Alú
semanticscholar   +1 more source

Physics-informed neural networks for inverse problems in nano-optics and metamaterials. [PDF]

open access: yesOptics Express, 2019
In this paper, we employ the emerging paradigm of physics-informed neural networks (PINNs) for the solution of representative inverse scattering problems in photonic metamaterials and nano-optics technologies.
Yuyao Chen   +3 more
semanticscholar   +1 more source

Silicon-on-Nitride Waveguide With Ultralow Dispersion Over an Octave-Spanning Mid-Infrared Wavelength Range

open access: yesIEEE Photonics Journal, 2012
The proposed silicon-on-nitride (SON) waveguide exhibits an ultrabroadband (4200 nm), low chromatic dispersion in the mid-infrared (MIR) wavelength region from 2430 to 6630 nm. It has two zero-dispersion wavelengths within the span.
Yang Yue   +4 more
doaj   +1 more source

Atmospheric tomography with separate minimum variance laser and natural guide star mode control [PDF]

open access: yes, 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

Low-Power All-Optical Switch Based on Time-Reversed Microring Laser

open access: yesIEEE Photonics Journal, 2012
An all-optical switch based on an absorbing microring resonator laterally coupled to two waveguides is described theoretically using the coupling of modes in time formalism and numerically using the finite-difference time-domain method.
Adam Mock
doaj   +1 more source

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