Results 31 to 40 of about 15,498,863 (150)

Calibration and evaluation of optical systems for full-field strain measurement [PDF]

open access: yes, 2007
The design and testing of a reference material for the calibration of optical systems for strain measurement is described, together with the design and testing of a standardized test material that allows the evaluation and assessment of fitness for ...
Cross   +13 more
core   +1 more source

Polarization-preserving confocal microscope for optical experiments in a dilution refrigerator with high magnetic field [PDF]

open access: yes, 2010
We present the design and operation of a fiber-based cryogenic confocal microscope. It is designed as a compact cold-finger that fits inside the bore of a superconducting magnet, and which is a modular unit that can be easily swapped between use in a ...
Bakker, M. P.   +5 more
core   +2 more sources

Compact silicon photonics circuit to extract multiple parameters for process control monitoring [PDF]

open access: yes, 2020
We present a compact interferometer circuit to extract multiple model parameters of on-chip waveguides and directional couplers from optical measurements.
Bogaerts, Wim   +5 more
core   +2 more sources

Computational inverse design for cascaded systems of metasurface optics [PDF]

open access: yes, 2019
Metasurfaces are an emerging technology that may supplant many of the conventional optics found in imaging devices, displays, and precision scientific instruments. Here, we develop a method for designing optical systems composed of multiple unique metasurfaces aligned in sequence. Our approach is based on computational inverse design, also known as the
arxiv   +1 more source

Optical design of the post focal relay of MAORY

open access: yesOptical Systems Design, 2018
The Multi Conjugate Adaptive Optics RelaY (MAORY) is foreseen to be installed at the straight through focus over the Nasmyth platform of the future Extremely Large Telescope (ELT).
M. Lombini   +13 more
semanticscholar   +1 more source

Design of an ultra-compact and high-contrast ratio all-optical NOR gate

open access: yesOptical and quantum electronics, 2021
In this research, an all-optical NOR gate is designed and simulated based on two-dimensional photonic crystals. A square lattice has been used to design this structure. This logic gate has two main inputs, a bias input, and an output.
Faribrz Parandin, Naser Mahtabi
semanticscholar   +1 more source

Optical design of the laser launch telescope via physical optics theorem for Laser Guide Star Facility [PDF]

open access: yesarXiv, 2021
The Laser Guide Star Facility (LGSF), as the most important part of the adaptive optics system of the large ground-based telescope, is aimed to generate multiple laser guide stars at the sodium layer. Laser Launch Telescope is employed to implement this requirement by projecting the Gauss beam to the sodium layer with a small beam size in LGSF system ...
arxiv  

Improved method of optical design [PDF]

open access: yes, 1969
Optical system designed by third order aberration theory is significantly improved by placing it into a ray deviation design program composed of two distinct computer programs.
Howell, B. J.
core   +1 more source

Mode-matching for Optical Antennas [PDF]

open access: yesPhys. Rev. Lett. 119, 217401 (2017), 2016
The emission rate of a point dipole can be strongly increased in presence of a well-designed optical antenna. Yet, optical antenna design is largely based on radio-frequency rules, ignoring e.g.~ohmic losses and non-negligible field penetration in metals at optical frequencies.
arxiv   +1 more source

Optical design and analysis program [PDF]

open access: yes, 1971
Computer program provides efficient handling of optical analysis equations and is sufficiently general in approach to accept wide variety of systems.
Meredith, C. F.
core   +1 more source

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