نتایج جستجو برای: light interference

تعداد نتایج: 488463  

Journal: :Optics letters 2012
Ozlem Yavas Coskun Kocabas

In this letter, we demonstrate a refractive index sensor based on a subwavelength plasmon interferometer. Illumination of an atilt subwavelength slit-grove pair on a metal surface with monochromatic light generates high-contrast interference fringes of the transmitted light. Detection of the refractive index of the dielectric medium on the metal surface is based on examining the relative positi...

Journal: :Journal of the Optical Society of America. A, Optics, image science, and vision 2007
Narkis M Arslanov Sergey A Moiseev

Spatial effects of interference and interaction of light modes in the subwavelength part of the near-field optical microscopy probe have been theoretically studied. It was found that the mode interference can lead to higher spatial compression of light (wavelength is equal to 500 nm in free space) within the transverse size of 25 nm inside the probe output aperture of 100 nm in diameter. The re...

Journal: :The journal of physical chemistry. B 2005
Sang-Kee Eah Heinrich M Jaeger Norbert F Scherer Gary P Wiederrecht Xiao-Min Lin

The spatial distribution of surface plasmon scattering from a single nanoparticle changes dramatically near a metal surface as a result of interference from the direct scattered light and indirect scattered light from the mirror reflection. The unique interference patterns have been reproduced by simulations based on Huygens-Fresnel wave propagation theory. The large spectral width of the surfa...

2008
Holger F. Hofmann

We show that the N -photon states produced by interference between laser light and downconverted light at the input of a two path interferometer can be characterized by a single tuning parameter that describes a transition from phase squeezing to nearly maximal path entanglement and back. The quantum states are visualized on a sphere using the analogy between N -photon interference and the spin...

2008
M Afzelius

We report an interference experiment of spontaneous emission of light from two distant solid-state ensembles of atoms that are coherently excited by a short laser pulse. The ensembles are Erbium ions doped into two LiNbO3 crystals with channel waveguides, which are placed in the two arms of a MachZehnder interferometer. The light that is spontaneously emitted after the excitation pulse shows fi...

Journal: :Applied optics 1979
D Post

While high-sensitivity moiré interferometry requires monochromatic light, an auxiliary compensator grating removes the requirement. Experimental verification utilized white light for moiré interference of sensitivity 0.833 microm/fringe. Configurations readily amenable to compensation include moiré fringe multiplication by even factors and the minimum-deviation arrangement. Chromatic compensati...

1988
H. Fearn

The interference effects that can be observed in the two output arms of a lossless beam splitter are calculated for incident light in the form of a photon-pair excitation in the two input arms. The output state that occurs when the photon pair is excited in a single input arm resembles that expected for independent classical particles, whereas quantum interference effects occur when the photon ...

2015
Xiangwen Li Liping Li Ling Zhou Shuang Zhang

In order to enhance the reliability of the indoor visible light MIMO wireless communication system and improve the ability of anti-interference between channels of the system, this paper introduces the new model of Space Shift Keying in the radio frequency communication into the visible light MIMO communication. The simulation analysis shows, the MIMO system of SSK has almost similar performanc...

2012
Zurab V. Wardosanidze

Despite the numerous scientific and technological achievements in the field of holography, its main task still remains the registration and the reconstruction of the complete information of the wave scattered by the object. The wave of the light, scattered by an object, is characterized by four main parameters: Intensity, Phase, Wavelength and Polarization. The primary task of holography is sol...

Journal: :Journal of microscopy 2007
Volker Bormuth Jonathon Howard Erik Schäffer

In many applications high-resolution video-enhanced differential interference contrast microscopy is used to visualize and track the ends of single microtubules. We show that single ultrabright light emitting diodes from Luxeon can be used to replace conventional light sources for these kinds of applications without loss of function. We measured the signal-to-noise ratio of microtubules imaged ...

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