[PDF]    http://dx.doi.org/10.3952/lithjphys.45203

Open access article / Atviros prieigos straipsnis

Lith. J. Phys. 45, 89–94 (2005)


LOCALIZATION OF PLASMON UNDER NONLINEAR INTERACTION OF WHISPERING-GALLERY MODES WITH ELECTRON PLASMA OF SPHERICAL MICROCAVITY
V.V. Kabanov and V.A. Sobolevsky
Institute of Physics, National Academy of Sciences of Belarus, F. Skaryna Ave. 68, 220072 Minsk, Republic of Belarus
E-mail: v.kabanov@ifanbel.bas-net.by

Received 26 October 2004

Self-localization mechanisms and conditions of laser radiation in a cold collisionless plasma of spherical microcavity have been studied taking into account the striction nonlinearity and the relativistic effects connected with the stimulated oscillatory movement of electrons. A spherical plasmon localized close to the centre of microcavity has been shown to excite under nonlinear interaction of whispering-gallery modes with electron plasma. It is determined that the realization of self-localized spherical structures of electromagnetic field and spherical plasmons inside the microcavity filled with electron plasma is caused by manifestation of relativistic nonlinearity of the medium.
Keywords: plasmon, nonlinear interaction, microresonator, whispering-gallery modes
PACS: 42.65.Jx, 42.65.Tg


PLAZMONO LOKALIZACIJA ESANT NETIESINEI ŠNABŽDESIO GALERIJŲ MODŲ SĄVEIKAI SU SFERINĖS MIKROERTMĖS ELEKTRONŲ PLAZMA
V.V. Kabanov, V.A. Sobolevsky
Fizikos institutas, Minskas, Baltarusija

Išstudijuoti lazerio spinduliuotės savilokalizacijos mechanizmai ir sąlygos šaltoje sferinės mikroertmės be susidūrimų plazmoje, atsižvelgiant į strikcijos netiesiškumą ir reliatyvistinius efektus, susijusius su priverstiniu elektronų virpesiniu judėjimu. Parodyta, kad sferinis plazmonas, lokalizuotas arti mikroertmės centro, sužadinamas, kai šnabždesio galerijų modos netiesiškai sąveikauja su elektronų plazma. Nustatyta, kad elektromagnetinio lauko savilokalizuotų sferinių struktūrų ir sferinių plazmonų susidarymą mikroertmėje, užpildytoje elektronų plazma, lemia medžiagos reliativystinis netiesiškumas.


References / Nuorodos

[1] S.C. Hill and R.E. Benner, in: Optical Effects Associated with Small Particles, eds. P.W. Barber and R.K. Chang (World Scientific, Singapore, 1988) pp. 3–61
[2] C.G.B. Garrett, W. Kaiser, and W.L. Bond, Stimulated emission into optical whispering modes of spheres, Phys. Rev. 124(6), 1807–1809 (1961),
http://dx.doi.org/10.1103/PhysRev.124.1807
[3] G. Chen, D.Q. Chowdhury, R.K. Chang, and W.-F. Hsieh, Laser-induced radiation leakage from microdroplets, J. Opt. Soc. Amer. B 10, 620–632 (1993),
http://dx.doi.org/10.1364/JOSAB.10.000620
[4] M.L. Gorodetsky and V.S. Ilchenko, High-Q optical whispering-gallery microresonators: Precession approach for spherical mode analysis and emission patterns with prism couplers, Opt. Commun. 113, 133–143 (1994),
http://dx.doi.org/10.1016/0030-4018(94)90603-3
[5] H.-M. Tzeng, K.F. Wall, M.B. Long, and R.K. Chang, Laser emission from droplets at wavelengths corresponding to morphology-dependent resonances, Opt. Lett. 9, 499–501 (1984),
http://dx.doi.org/10.1364/OL.9.000499
[6] J.-Z. Zhang and R.K. Chang, Generation and suppression of stimulated Brillouin scattering in single liquid droplets, J. Opt. Soc. Am. B 6(6), 151–154 (1989),
http://dx.doi.org/10.1364/JOSAB.6.000151
[7] V.V. Kabanov, Spherically symmetric structural resonances self-localized in a nonlinear medium, Quantum Electron. 26, 820–821 (1996),
http://dx.doi.org/10.1070/QE1996v026n09ABEH000790
[8] A.B. Borisov, A.V. Borovsky, V.V. Korobkin, A.M. Prohorov, Ch.K. Rouds, and O.B. Shiryaev, Relativistic-strictional self-channeling of intense ultrashort laser pulses in a matter, JETP (in Russian) 101(4), 1132–1153 (1992)
[9] A.N. Akhiezer and R.V. Polovin, On the theory of wave motion of an electron plasma, JETP (in Russian) 30(5), 915–928 (1956)
[10] A.V. Gaponov and N.A. Miller, On the potentional wells for the charged particles in a high-frequency electromagnetic field, JETP (in Russian) 34, 242–243 (1958)
[11] J.H. Marburger and R.F. Tooper, Nonlinear optical standing waves in overdense plasmas, Phys. Rev. Lett. 35(15), 1001–1004 (1975),
http://dx.doi.org/10.1103/PhysRevLett.35.1001
[12] C.J. McKinstrie and D.F. DuBois, A covariant formalism for wave propagation applied to stimulated Raman scattering, Phys. Fluids 31(2), 278–287 (1988),
http://dx.doi.org/10.1063/1.866858
[13] J.A. Stratton, Electromagnetic Theory (McGraw-Hill, New York, 1941)
[14] V.V. Kabanov, Three-dimensional soliton self-localized as a spherically symmetric structural resonance of electromagnetic radiation in a nonlinear medium, Lithuanian J. Phys. 39, 275–281 (1999)
[15] V.V. Kabanov, Dynamics of spherically symmetric vortex of laser radiation in a nonlinear medium, Chaos, Solitons Fractals 17, 425–431 (2003),
http://dx.doi.org/10.1016/S0960-0779(02)00383-1