Plasmons with orbital angular momentum

Mendonca, J. T.; Ali, S.; Thidé, B.
November 2009
Physics of Plasmas;Nov2009, Vol. 16 Issue 11, p112103
Academic Journal
Electron plasma waves carrying orbital angular momentum are investigated in an unmagnetized collisionless plasma composed of inertial electrons and static ions. For this purpose, the usual plasmon dispersion relation is employed to derive an approximate paraxial equation. The latter is analyzed with a Gaussian beam solution. For a finite angular momentum associated with the plasmon, Laguerre–Gaussian (LG) solutions are employed for solving the electrostatic potential problem which gives approximate solution and is valid for plasmon beams in the paraxial approximation. The LG potential determines the electric field components and energy flux of plasmons with finite angular momentum. Numerical illustrations show that the radial and angular mode numbers strongly modify the profiles of the LG potential.


Related Articles

  • Kinetic description of electron plasma waves with orbital angular momentum. Mendonça, J. T. // Physics of Plasmas;Nov2012, Vol. 19 Issue 11, p112113 

    We describe the kinetic theory of electron plasma waves with orbital angular momentum or twisted plasmons. The conditions for a twisted Landau resonance to exist are established, and this concept is introduced for the first time. Expressions for the kinetic dispersion relation and for the...

  • Electrostatic twisted modes in multi-component dusty plasmas. Ayub, M. K.; Ali, S.; Ikram, M. // Physics of Plasmas;2016, Vol. 23 Issue 1, p1 

    Various electrostatic twisted modes are re-investigated with finite orbital angular momentum in an unmagnetized collisionless multi-component dusty plasma, consisting of positive/negative charged dust particles, ions, and electrons. For this purpose, hydrodynamical equations are employed to...

  • Phonons with orbital angular momentum. Ayub, M. K.; Ali, S.; Mendonca, J. T. // Physics of Plasmas;Oct2011, Vol. 18 Issue 10, p102117 

    Ion accoustic waves or phonon modes are studied with orbital angular momentum (OAM) in an unmagnetized collissionless uniform plasma, whose constituents are the Boltzmann electrons and inertial ions. For this purpose, we have employed the fluid equations to obtain a paraxial equation in terms of...

  • Virtual angular momentum: The dynamics of inverting molecules in an electrostatic hexapole field. Cho, Victoria A.; Pipes, Leonard C.; Kim, Dae Young; Brandstater, Nathan; Lester, Brian W.; Torres, Elva A.; Baugh, Delroy A. // Journal of Chemical Physics;6/1/1996, Vol. 104 Issue 21, p8490 

    The semiclassical dynamics of a molecule which undergoes tunneling inversion while traversing an electrostatic hexapole field is shown to be described by the motion of a two dimensional harmonic oscillator with angular momentum Lv. Analytical expressions are provided which show explicitly the...

  • On the choice of phase in the CS approximation: Integral equation approach. Snider, R. F. // Journal of Chemical Physics;10/15/1986, Vol. 85 Issue 8, p4381 

    As usually presented, the centrifugal sudden approximation examines how each individual angular momentum component of the scattering wave function and scattering matrix element is to be estimated. Here the three-dimensional structure of the scattering wave function is emphasized and any...

  • Depolarization of Luminescence of Polyatomic Molecules in the Gas Phase as a Method of Determining the Efficiency of Collisional Transfer of Angular Momentum. Blokhin, A. P.; Gelin, M. F.; Kalosha, I. I.; Matylitskiı, V. V.; Tolkachev, V. A. // Optics & Spectroscopy;Jul2003, Vol. 95 Issue 1, p35 

    The theory of collisional depolarization of luminescence of extended polyatomic molecules in rarefied gases is considered. The interrelation between the frequency of collisions, the relaxation time of the angular momentum, and the cross section of the luminescence depolarization is established,...

  • Finite orbital angular momentum states and Laguerre-Gaussian potential in two-temperature electron plasmas. Shahzad, K.; Ali, S. // Astrophysics & Space Science;Sep2014, Vol. 353 Issue 1, p3 

    Electron-acoustic waves are studied with orbital angular momentum (OAM) in an unmagnetized collisionless uniform plasma, whose constituents are the Boltzmann hot electrons, inertial cold electrons and stationary ions. For this purpose, we employ the fluid equations to obtain a paraxial equation...

  • Two-photon polymerization of a three dimensional structure using beams with orbital angular momentum. Shi-Jie Zhang; Yan Li; Zhao-Pei Liu; Jin-Li Ren; Yun-Feng Xiao; Hong Yang; Qihuang Gong // Applied Physics Letters;8/11/2014, Vol. 105 Issue 6, p1 

    The focus of a beam with orbital angular momentum exhibits internal structure instead of an elliptical intensity distribution of a Gaussian beam, and the superposition of Gauss-Laguerre beams realized by two-dimensional phase modulation can generate a complex three-dimensional (3D) focus. By...

  • Amplification of terahertz radiation in quantum cascade structures. Mauro, Cosimo; Green, Richard P.; Tredicucci, Alessandro; Beltram, Fabio; Beere, Harvey E.; Ritchie, David A. // Journal of Applied Physics;Sep2007, Vol. 102 Issue 6, p063101 

    We explore the use of quantum cascade structures as amplifiers for terahertz radiation. For this purpose, two section devices were fabricated, in which the output from a ν∼2.3 THz laser section is amplified in a subsequent stage. For relatively short devices we obtain an amplification of...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics