نتایج جستجو برای: diffraction grating

تعداد نتایج: 76208  

Journal: :Optics express 2002
Jose Lunazzi Noemi Rivera

Pseudoscopic images that keep a continuous parallax are shown to be possible due to a double diffraction process intermediated by a slit. One diffraction grating acts as a wavelength encoder of views while a second diffraction grating decodes the projected image. The process results in the enlargement of the image under common white light illumination.

1997
V. G. BARYSHEVSKY

The equations describing the T-violating photon scattering by a diffraction grating have been obtained. It is shown, that the T-violating rotation of the photon polarization plane appear under diffraction in a noncenter symmetrical diffraction grating. The rotation angle gives rise sharply, when the conditions of the photon resonance transmission are satisfied.

Journal: :Optics letters 1993
C C Sun M W Chang K Y Hsu

In the past several years photorefractive materials have been proposed for use as photorefractive incoherent-to-coherent optical converters (PICOC's) because of their dynamic real-time grating recording properties.'5 In a general PICOC, the imagebearing incoherent light is used to erase the grating, which is constructed by two coherent writing beams. The output image is carried by the diffracte...

Journal: :Applied spectroscopy 2015
Xueli Tian Hong Guo Ketan H Bhatt Song Q Zhao Yi Wang Junpeng Guo

We experimentally demonstrate a surface plasmon resonance spectrometer sensor by using an e-beam-patterned super-period gold nanodisc grating on a glass substrate. The super-period gold nanodisc grating has a small subwavelength period and a large diffraction grating period. The small subwavelength period enhances localized surface plasmon resonance, and the large diffraction grating period dif...

Journal: :Optics letters 2001
C R Fernández-Pousa I Moreno J A Davis J Adachi

We report experimental results with a reflective continuous anisotropic polarizing diffraction-grating beam splitter that produces three diffraction orders. The diffraction efficiencies and polarizations of the diffracted orders are controlled through the incoming polarization state and by use of a wave plate with arbitrary orientation located between the grating and a mirror. In particular, we...

Journal: :Physical review letters 2010
Solomon M Saltiel Dragomir N Neshev Wieslaw Krolikowski Noa Voloch-Bloch Ady Arie Ole Bang Yuri S Kivshar

We observe experimentally a novel type of nonlinear diffraction in the process of two-wave mixing on a nonlinear quadratic grating. We demonstrate that when the nonlinear grating is illuminated simultaneously by two noncollinear beams, a second-harmonic diffraction pattern is generated by a virtual beam propagating along the bisector of the two pump beams. The observed diffraction phenomena is ...

Journal: :Physical review letters 2010
Bum Suk Zhao Gerard Meijer Wieland Schöllkopf

We report on the observation of emerging beam resonances, well known as Rayleigh-Wood anomalies and threshold resonances in photon and electron diffraction, respectively, in an atom-optical diffraction experiment. Diffraction of He atom beams reflected from a blazed ruled grating at grazing incidence has been investigated. The total reflectivity of the grating as well as the intensities of the ...

Journal: :Physical review letters 2005
Stacy Wise V Quetschke A J Deshpande G Mueller D H Reitze D B Tanner B F Whiting Y Chen A Tünnermann E Kley T Clausnitzer

Diffraction gratings affect the absolute phase of light in a way that is not obvious from the usual derivation of optical paths using the grating equation. For example, consider light which encounters first one and then the second of two parallel gratings. If one grating is moved parallel to its surface, the phase of the light diffracted from the grating pair is shifted by 2pi each time the gra...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2006
Matthew J Lockyear Alastair P Hibbins Kevin R White J Roy Sambles

Diffraction gratings are elementary tools for much of optics and spectroscopy. Here, at microwave frequencies, we provide a new perspective on these fundamental structures. A transmission diffraction grating is presented that has diffracted beams emanating from one surface only. It can thus function either as a transmission grating with no reflected orders (other than zero) or, in the reverse c...

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