Results 11 to 20 of about 292,785 (62)

Negative frequency waves in optics : control and investigation of their generation and evolution [PDF]

open access: yes, 2015
This thesis is concerned with various methods for the control and investigation of pulse dynamics in a Photonic Crystal Fibre (PCF) and of the radiation driven by a short pulse.
McLenaghan, Joanna Siân
core   +2 more sources

Metamaterials for light rays: ray optics without wave-optical analog in the ray-optics limit [PDF]

open access: yes, 2009
Volumes of sub-wavelength electromagnetic elements can act like homogeneous materials: metamaterials. In analogy, sheets of optical elements such as prisms can act ray-optically like homogeneous sheet materials.
Hamilton, A.C., Courtial, J.
core   +1 more source

Acknowledgment to Reviewers of Optics in 2020

open access: yes, 2021
Peer review is the driving force of journal development, and reviewers are gatekeepers who ensure that Optics maintains its standards for the high quality of its published papers [...
Optics Editorial Office Office
core   +1 more source

Butterfly Optics Exceed the Theoretical Limits of Conventional Apposition Eyes [PDF]

open access: yes, 1987
Optical experiments on butterfly compound eyes show that they have angular sensitivities narrower than expected from conventional apposition eyes. This superior performance is explained by a theoretical model where the cone stalk is considered as a ...
Nilsson, D.-E.,   +3 more
core   +2 more sources

Image sharpening metrics and search strategies for indirect adaptive optics [PDF]

open access: yes, 2000
Adaptive optics is concerned with the correction of turbulence induced aberrations and mis-alignments in optical systems. It is an expensive and complicated technology which has been developed for astronomy and defence applications.
Doble, N., Doble, Nathan
core  

Optimising the NAOMI adaptive optics real-time control system [PDF]

open access: yes, 2008
This thesis describes the author's research in the field of Real-Time Control (RTC) for Adaptive Optics (AO) instrumentation. The research encompasses experiences and knowledge gained working in the area of RTC on astronomical instrumentation projects ...
Goodsell, S. J., Goodsell, S J
core  

Interferometric wavefront sensing for extreme adaptive optics [PDF]

open access: yes, 2004
Adaptive optics is concerned with the correction of phase distortions in wavefronts which degrade the quality of images produced by optical systems. It was originally developed for both astronomy and the military, where the Earth's atmosphere causes ...
Oag, Thomas J. D., Oag, Thomas J D
core  

An embedded adaptive optics real time controller [PDF]

open access: yes, 2007
The design and realisation of a low cost, high speed control system for adaptive optics (AO) is presented. This control system is built around a field programmable gate array (FPGA).
Saunter, Christopher D.   +1 more
core  

Matching optics for Gaussian beams [PDF]

open access: yes, 1991
A system of matching optics for Gaussian beams is described. The matching optics system is positioned between a light beam emitter (such as a laser) and the input optics of a second optics system whereby the output from the light beam emitter is ...
Gunter, William D.
core  

Nonlinear Optics and Applications [PDF]

open access: yes, 2007
Nonlinear optics is the result of laser beam interaction with materials and started with the advent of lasers in the early 1960s. The field is growing daily and plays a major role in emerging photonic technology.
Frazier, Donald O.   +1 more
core  

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