نتایج جستجو برای: optics

تعداد نتایج: 33834  

Journal: :Nano letters 2010
Yongmin Liu Thomas Zentgraf Guy Bartal Xiang Zhang

We propose and demonstrate efficiently molding surface plasmon polaritons (SPPs) based on transformation optics. SPPs are surface modes of electromagnetic waves tightly bound at metal-dielectric interfaces, which allow us to scale optics beyond the diffraction limit. Taking advantage of transformation optics, here we show that the propagation of SPPs can be manipulated in a prescribed manner by...

2001
C. A. MacDonald W. M. Gibson

Polycapillary x-ray optics provide an innovative new way to control x-ray beams. Placing these optics after the object to be imaged provides very efficient rejection of Compton scatter, while allowing image magnification without loss of resolution, image demagnification, or image shaping to match with digital detectors. An extensive study of the effects of surface and profile defects have great...

Journal: :Optometry and vision science : official publication of the American Academy of Optometry 2003
Carlos Dorronsoro Sergio Barbero Lourdes Llorente Susana Marcos

PURPOSE Our aim was to obtain a complete description of the interactions of rigid gas permeable (RGP) contact lenses with the optics of normal eyes. METHODS We measured total and anterior-surface aberrations in four subjects, who were all long-term RGP contact lens wearers. The anterior-surface wave aberration was obtained from videokeratographic elevation maps, and ocular wave aberration was...

2015
P. García-Martínez M. M. Sánchez-López J. Espinosa J. J. Miret

We present a purposeful initiative to open new grounds for teaching Geometrical Optics. It is based on the creation of an innovative education networking involving academic staff from three Spanish universities linked together around Optics. Nowadays, students demand online resources such as innovative multimedia tools for complementing the understanding of their studies. Geometrical Optics rel...

2009
Changyin Zhou

In computational camera research, people design unconventional optics to sample the light field in a way that is radically different from the traditional camera and preserve new forms of visual information for various applications. When one has an idea of optics design, it is very often that an evaluation based on simulation has to be conducted first before building a real system. However, how ...

1999
Fabien Malbet Pierre Kern Isabelle Schanen-Duport Jean-Philippe Berger Karine Rousselet Pierre Benech

We propose a new instrumental concept for long-baseline optical single-mode interferometry using integrated optics which were developed for telecommunication. Visible and infrared multi-aperture interferometry requires many optical functions (spatial filtering, beam combination, photometric calibration, polarization control) to detect astronomical signals at very high angular resolution. Since ...

2004
Sibel Başkal Elena Georgieva Marilyn E. Noz

It has been almost one hundred years since Einstein formulated his special theory of relativity in 1905. He showed that the basic space-time symmetry is dictated by the Lorentz group. It is shown that this group of Lorentz transformations is not only applicable to special relativity, but also constitutes the scientific language for optical sciences. It is noted that coherent and squeezed states...

2015
Caroline L. Poyser Andrey V. Akimov Richard P. Campion Anthony J. Kent

Phonon optics concerns operations with high-frequency acoustic waves in solid media in a similar way to how traditional optics operates with the light beams (i.e. photons). Phonon optics experiments with coherent terahertz and sub-terahertz phonons promise a revolution in various technical applications related to high-frequency acoustics, imaging, and heat transport. Previously, phonon optics u...

Journal: :CoRR 2001
Corinne Boyer Jacques Sebag Brent Ellerbroek

The Gemini Observatory is planning to implement a Multi Conjugate Adaptive Optics System as a facility instrument for the Gemini-South telescope. The system will include 5 Laser Guide Stars, 3 Natural Guide Stars, and 3 Deformable mirrors optically conjugated at different altitudes to achieve near-uniform atmospheric compensation over a 1 arc minute square field of view. The control of such a s...

2016
J H Eberly Xiao-Feng Qian Asma Al Qasimi Hazrat Ali M A Alonso R Gutiérrez-Cuevas Bethany J Little John C Howell Tanya Malhotra A N Vamivakas

Quantum optics and classical optics are linked in ways that are becoming apparent as a result of numerous recent detailed examinations of the relationships that elementary notions of optics have with each other. These elementary notions include interference, polarization, coherence, complementarity and entanglement. All of them are present in both quantum and classical optics. They have histori...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید