Results 51 to 60 of about 262,950 (171)

Using tensor properties of four wave mixing in semiconductor optical amplifiers for polarization independent wavelength conversion or pump suppression [PDF]

, 1996
Summary form only given. Wavelength conversion by four-wave mixing (FWM) in semiconductor optical amplifiers (SOAs) has several advantages, including transparency to the modulation format and bit rate.
Hunziker, Guido, Koren, Uzi, Miller, Barry L., Paiella, Roberto, Vahala, Kerry J., Zhou, Jianhui   +5 more
core  

Spin-to-Orbital Angular Momentum Conversion in Semiconductor Microcavities [PDF]

, 2011
We experimentally demonstrate a technique for the generation of optical beams carrying orbital angular momentum using a planar semiconductor microcavity.
A. V. Kavokin, A. V. Kavokin, B. Deveaud-Plédran, F. Manni, F. Morier-Genoud, I. A. Shelykh, K. G. Lagoudakis, R. Cerna, T. C. H. Liew, T. K. Paraïso, V. Yu. Bazhenov, V. Yu. Bazhenov, Y. Léger   +12 more
core   +2 more sources

90 degree polarization rotator using a bilayered chiral metamaterial with giant optical activity

, 2010
A bilayered chiral metamaterial (CMM) is proposed to realize a 90 degree polarization rotator, whose giant optical activity is due to the transverse magnetic dipole coupling among the metallic wire pairs of enantiomeric patterns.
Jackson J. D., Kong J. A., Sailing He, Yuqian Ye   +3 more
core   +1 more source

Terahertz polarization conversion with quartz waveplate sets [PDF]

Applied Optics, 2013
We present the results of calculation and experimental testing of an achromatic polarization converter and a composite terahertz waveplate (WP), which are represented by sets of plane-parallel birefringent plates with in-plane birefringence axis. The calculations took into account the effect of interference, which was especially prominent when plates ...
Kaveev, A.K., Kropotov, G.I., Tsygankova, E.V., Tzibizov, I.A., Ganichev, S.D., Danilov, S.N., Olbrich, P., Zoth, C., Kaveeva, E.G., Zhdanov, A.I., Ivanov, A.A., Deyanov, R.Z., Redlich, B.   +12 more
openaire   +2 more sources

Demonstration of an ultra-short polarization converter in InGaAsP/InP membrane [PDF]

, 2012
An ultra-short (<10 µm length) polarization converter is demonstrated in an indium phosphide based membrane. Measurements show very high polarization conversion efficiency (97 %) with low excess losses (~ 1 dB)
Ambrosius, HJMM, Keyvaninia, Shahram, Pello, J, Roelkens, Günther, Smit, Meint, van der Tol, JJGM, van Veldhoven, PJ   +6 more
core   +2 more sources

Theoretical Models for Producing Circularly Polarized Radiation in Extragalactic Radio Sources

, 2003
We discuss the production of circular polarization in compact radio sources both by the intrinsic mechanism and by Faraday conversion. We pay particular attention to the magnetic field structure, considering partially ordered fiel ds and Laing sheets ...
Homan, Daniel C., Wardle, John F. C.
core   +1 more source

A Subwavelength Transmit-Array Lens Element Combining Functions of Phase Modulation and Polarization Conversion

Applied Sciences, 2022
Advanced applications require transmit-array lenses featuring low profiles, covering 360° phase modulation, and, potentially, polarization conversion. Subwavelength metamaterial elements with multilayers manipulate electromagnetic waves with predesigned ...
T. Xu, Y. Lu, G. He, X. Yang
doaj   +1 more source

Broadband adiabatic conversion of light polarization

, 2010
A broadband technique for robust adiabatic rotation and conversion of light polarization is proposed. It uses the analogy between the equation describing the polarization state of light propagating through an optically anisotropic medium and the ...
A.A. Rangelov, Bergmann, Born, Darsht, Gaubatz, Gregori, Kubo, Kubo, Kubo, Kuratsuji, Kuratsuji, N.V. Vitanov, Rangelov, Rothmayer, Sala, Seto, Suchowski, Suchowski, Tratnik, U. Gaubatz, Vitanov, Vitanov, Zapasskii   +22 more
core   +1 more source

Broadband multifunctional polarization converter based on graphene and vanadium dioxide metasurfaces along with analytical methods

Scientific Reports
In this paper, a tunable broadband multifunctional polarization converter based on graphene and vanadium dioxide (VO2) is designed. When VO2 is in the metallic state, the structure has the functions of three-band linear to linear and two-band linear to ...
Saman Heidari, Najmeh Nozhat
doaj   +1 more source

Metamaterials for Enhanced Polarization Conversion in Plasmonic Excitation [PDF]

, 2011
Surface plasmons efficient excitation is typically expected to be strongly constrained to transverse magnetic (TM) polarized incidence, as demonstrated so far, due to its intrinsic TM polarization.
Fainman, Yeshaiahu, Feng, Liang, Liu, Zhaowei, Lomakin, Vitaliy, Mizrahi, Amit, Zamek, Steve   +5 more
core   +1 more source