نتایج جستجو برای: circularly polarized

تعداد نتایج: 37671  

2010
Erdem Ogut Gullu Kiziltas Kursat Sendur

With advances in nanotechnology, emerging plasmonic nano-optical applications, such as all-optical magnetic recording, require circularly-polarized electromagnetic radiation beyond the diffraction limit. In this study, a plasmonic cross-dipole nano-antenna is investigated to obtain a circularly polarized near-field optical spot with a size smaller than the diffraction limit of light. The perfor...

1997
Francis F. Chen

By suitably adding rightand left-hand circularly polarized helicon waves in a cylinder, it is possible, in principle, to form linearly polarized modes, contrary to the notion that whistler waves must be circularly polarized. The plane-polarized component is accompanied by a left-hand circularly polarized component which vanishes on axis but becomes important at large radii. The field lines of t...

2006
Yuhua Huang Ying Zhou Qi Hong Alexandra Rapaport Michael Bass Shin-Tson Wu

Polarization effect of the pulsed pumping laser on the lasing characteristics of the dye-doped right-handed cholesteric liquid crystal (CLC) is studied at different incident angles. At a small incident angle (<18 ), the CLC laser performance is independent of the polarization state of the pumping laser. As the incident angle exceeds 18 , the CLC laser emission strongly depends on the polarizati...

2015
Tianyu Ye Han-Chun Liu Zhuo Wang W. Wegscheider Ramesh G. Mani

A comparative study of the radiation-induced magnetoresistance oscillations in the high mobility GaAs/AlGaAs heterostructure two dimensional electron system (2DES) under linearly- and circularly- polarized microwave excitation indicates a profound difference in the response observed upon rotating the microwave launcher for the two cases, although circularly polarized microwave radiation induced...

2012
Xiwen Chen Zufang Huang Shangyuan Feng Jinhua Chen Lan Wang Peng Lu Haishan Zeng Rong Chen

Polarized surface-enhanced Raman scattering (SERS) spectroscopy was applied for obtaining biochemical information about the seminal plasma. The effect of different laser polarizations (nonpolarized, linear-polarized, right-handed circularly polarized, and left-handed circularly polarized) on seminal plasma SERS spectroscopy was explored for the first time. The diagnostic performance in differen...

2016
M. Tahir Q. Y. Zhang U. Schwingenschlögl

We theoretically demonstrate versatile electronic properties of germanene monolayers under circularly, linearly, and elliptically polarized light. We show for the high frequency regime that the edge states can be controlled by tuning the amplitude of the light and by applying a static electric field. For circularly polarized light the band gap in one valley is reduced and in the other enhanced,...

Journal: :Chemical communications 2016
Yizhuo He Keelan Lawrence Whitney Ingram Yiping Zhao

A new strategy to improve the sensing ability of localized surface plasmon resonance sensors is presented. By employing chiral plasmonic nanostructures, circularly polarized differential transmittance can show enhanced sensing performance over circularly polarized transmittance under certain conditions.

2015
Ofer Kfir Patrik Grychtol Emrah Turgut Ronny Knut Dmitriy Zusin Dimitar Popmintchev Tenio Popmintchev Hans Nembach Justin M. Shaw Avner Fleischer Henry Kapteyn Margaret Murnane

Circularly-polarized extreme ultraviolet and X-ray radiation is useful for analysing the structural, electronic and magnetic properties of materials. To date, such radiation has only been available at large-scale X-ray facilities such as synchrotrons. Here, we demonstrate the first bright, phase-matched, extreme ultraviolet circularly-polarized high harmonics source. The harmonics are emitted w...

Journal: :Physical review letters 2002
G Fibich B Ilan

We derive a new system of equations that describes the propagation of circularly polarized laser beams in a Kerr medium. Analysis and simulations of this system show that multiple filamentation is suppressed for circularly polarized beams.

Journal: :Optics letters 2007
P S Kuo K L Vodopyanov M M Fejer X Yu J S Harris D F Bliss D Weyburne

We demonstrate an optical parametric oscillator (OPO) based on GaAs pumped with linearly polarized and circularly polarized light and show that the relative OPO thresholds agree with theoretical expectations. For the circularly polarized pump, the threshold was as low as for the [111]-linearly polarized pump case. The pump was also passed through a Lyot depolarizer to produce pseudo-depolarized...

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