منابع مشابه
Angular Spectrum Representation of Pulsed Laser Beams
62 LLE Review, Volume 78 Pulsed laser beams with two-dimensional smoothing by spectral dispersion (2-D SSD), used in inertial confinement fusion (ICF), improve the on-target uniformity on the OMEGA laser system;1–4 however, 2-D SSD is highly susceptible to significant amplitude modulation (AM) during its generation and propagation.5–8 In addition to on-target uniformity, the smoothness of the p...
متن کاملOrbital angular momentum and nonparaxial light beams
The simple relationship between total angular momentum and energy and the seemingly natural separation of the angular momentum into spin and orbital components in the paraxial approximation, are investigated for a general nonparaxial form of monochromatic beam with near cylindrical symmetry.
متن کاملMeasuring the complex orbital angular momentum spectrum and spatial mode decomposition of structured light beams
Light beams carrying orbital angular momentum are key resources in modern photonics. In many applications, the ability to measure the complex spectrum of structured light beams in terms of these fundamental modes is crucial. Here we propose and experimentally validate a simple method that achieves this goal by digital analysis of the interference pattern formed by the light beam and a reference...
متن کاملSpin angular momentum of inhomogeneous and transversely limited light beams
The spin angular momentum (AM) of a light beam appears due to presence of circular or elliptic polarization. Its characterization is coupled with some paradoxical features which are commonly recognized but, to our opinion, are not satisfactorily explained in the known literature. Namely, for a spatially-homogeneous circularly polarized beam, the spin AM density is zero at every point of the bea...
متن کاملRapid generation of light beams carrying orbital angular momentum.
We report a technique for encoding both amplitude and phase variations onto a laser beam using a single digital micro-mirror device (DMD). Using this technique, we generate Laguerre-Gaussian and vortex orbital-angular-momentum (OAM) modes, along with modes in a set that is mutually unbiased with respect to the OAM basis. Additionally, we have demonstrated rapid switching among the generated mod...
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ژورنال
عنوان ژورنال: Optics Letters
سال: 2006
ISSN: 0146-9592,1539-4794
DOI: 10.1364/ol.31.000525