Sum frequency generation with two orbital angular momentum carrying laser beams
نویسندگان
چکیده
منابع مشابه
Rapid 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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In classical optics theWolf function is the natural analogue of the quantumWigner function and like the latter itmay be negative in some regions.We discuss the implications this negativity has on the generalized ray interpretation of free-space paraxial wave evolution. Important examples include two classes of beams carrying optical orbital angularmomentum—Laguerre–Gaussian (LG) andBessel beams...
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When linearly polarised light is transmitted through a spinning window, the plane of polarisation is rotated. This rotation arises through a phase change that is applied to the circularly polarised states corresponding to the spin angular momentum (SAM). Here we show an analogous effect for the orbital angular momentum (OAM), where a differential phase between the positive and negative modes (±...
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Abstract Photons carrying an orbital angular momentum (OAM) are present in the off-axis radiation of higher harmonics of helical undulators. Usually, the purity and visibility of OAM carrying photons is blurred by the electron beam emittance. However, high brightness OAM beams are expected in Ultimate Storage Rings (USRs) and FELs, and they may trigger a new class of experiments utilizing the v...
متن کاملAnharmonic propagation of two-dimensional beams carrying orbital angular momentum in a harmonic potential.
We analytically and numerically investigate an anharmonic propagation of two-dimensional beams in a harmonic potential. We pick noncentrosymmetric beams of common interest that carry orbital angular momentum. The examples studied include superposed Bessel-Gauss (BG), Laguerre-Gauss (LG), and circular Airy (CA) beams. For the BG beams, periodic inversion, phase transition, and rotation with peri...
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ژورنال
عنوان ژورنال: Journal of the Optical Society of America B
سال: 2015
ISSN: 0740-3224,1520-8540
DOI: 10.1364/josab.32.000407