### Abstract

A review of work on the dynamical behavior of counterpropagating incoherent laser beams in photorefractive crystals is presented. Numerical study of counterpropagating beams of different type is carried out, in both space and time, using an appropriate theoretical model. The development of patterns in broad hyper-Gaussian counterpropagating beams in saturable Kerr-like media is investigated, by varying the width of beams. Rotational properties of counterpropagating mutually incoherent self-trapped vortex beams in optically induced fixed photonic lattices are also investigated numerically. One of the fundamental quantum mechanical phenomena is observed for the counterpropagating beams in photonic lattices, the tunneling of light from the first to the higher-order bands of the lattice band gap spectrum. The transfer of angular momentum from vortex beams to optically induced photonic lattices is also demonstrated. For the interacting beams it is found that the sum of angular momenta of counterpropagating components is not a conserved quantity, but the difference is. In the fixed lattices there is always a considerable loss of angular momentum.

Original language | English |
---|---|

Pages (from-to) | 729-736 |

Number of pages | 8 |

Journal | Acta Physica Polonica A |

Volume | 112 |

Issue number | 5 |

Publication status | Published - 1 Nov 2007 |

Externally published | Yes |

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### ASJC Scopus subject areas

- Physics and Astronomy(all)

### Cite this

*Acta Physica Polonica A*,

*112*(5), 729-736.

**Dancing light : Counterpropagating beams in photorefractive crystals.** / Belić, M. R.; Petrović, M. S.; Jivić, D. M.; Strinić, A. I.; Arsenović, D. D.; Prvanović, S.; Jovanovic, Raka; Petrović, N. Z.

Research output: Contribution to journal › Article

*Acta Physica Polonica A*, vol. 112, no. 5, pp. 729-736.

}

TY - JOUR

T1 - Dancing light

T2 - Counterpropagating beams in photorefractive crystals

AU - Belić, M. R.

AU - Petrović, M. S.

AU - Jivić, D. M.

AU - Strinić, A. I.

AU - Arsenović, D. D.

AU - Prvanović, S.

AU - Jovanovic, Raka

AU - Petrović, N. Z.

PY - 2007/11/1

Y1 - 2007/11/1

N2 - A review of work on the dynamical behavior of counterpropagating incoherent laser beams in photorefractive crystals is presented. Numerical study of counterpropagating beams of different type is carried out, in both space and time, using an appropriate theoretical model. The development of patterns in broad hyper-Gaussian counterpropagating beams in saturable Kerr-like media is investigated, by varying the width of beams. Rotational properties of counterpropagating mutually incoherent self-trapped vortex beams in optically induced fixed photonic lattices are also investigated numerically. One of the fundamental quantum mechanical phenomena is observed for the counterpropagating beams in photonic lattices, the tunneling of light from the first to the higher-order bands of the lattice band gap spectrum. The transfer of angular momentum from vortex beams to optically induced photonic lattices is also demonstrated. For the interacting beams it is found that the sum of angular momenta of counterpropagating components is not a conserved quantity, but the difference is. In the fixed lattices there is always a considerable loss of angular momentum.

AB - A review of work on the dynamical behavior of counterpropagating incoherent laser beams in photorefractive crystals is presented. Numerical study of counterpropagating beams of different type is carried out, in both space and time, using an appropriate theoretical model. The development of patterns in broad hyper-Gaussian counterpropagating beams in saturable Kerr-like media is investigated, by varying the width of beams. Rotational properties of counterpropagating mutually incoherent self-trapped vortex beams in optically induced fixed photonic lattices are also investigated numerically. One of the fundamental quantum mechanical phenomena is observed for the counterpropagating beams in photonic lattices, the tunneling of light from the first to the higher-order bands of the lattice band gap spectrum. The transfer of angular momentum from vortex beams to optically induced photonic lattices is also demonstrated. For the interacting beams it is found that the sum of angular momenta of counterpropagating components is not a conserved quantity, but the difference is. In the fixed lattices there is always a considerable loss of angular momentum.

UR - http://www.scopus.com/inward/record.url?scp=38049018591&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=38049018591&partnerID=8YFLogxK

M3 - Article

VL - 112

SP - 729

EP - 736

JO - Acta Physica Polonica A

JF - Acta Physica Polonica A

SN - 0587-4246

IS - 5

ER -