Paraxial propagation in amorphous optical media with screw dislocation
arXiv:1002.0646 · doi:10.1088/2040-8978/12/3/035703
Abstract
We study paraxial beam propagation parallel to the screw axis of a dislocated amorphous medium that is optically weakly inhomogeneous and isotropic. The effect of the screw dislocation on the beam's orbital angular momentum is shown to change the optical vortex strength, rendering vortex annihilation or generation possible. Furthermore, the dislocation is shown to induce a weak \textit{biaxial} anisotropy in the medium due to the elasto-optic effect, which changes the beam's spin angular momentum as well as causing precession of the polarization. We derive the equations of motion of the beam and demonstrate the optical Hall effect in the dislocated medium. Its application with regard to determining the Burgers vector as well as the elasto-optic coefficients of the medium is explained.
References in corpus (9)
- Optical spin-to-orbital angular momentum conversion in inhomogeneous anisotropic media
- Pancharatnam-Berry phase optical elements for wavefront shaping in the visible domain: switchable helical modes generation
- Geometrical Optics of Beams with Vortices: Berry Phase and Orbital Angular Momentum Hall Effect
- Modified geometrical optics of a smoothly inhomogeneous isotropic medium: the anisotropy, Berry phase, and the optical Magnus effect
- Geometrical Aspects in Optical Wavepacket Dynamics
- Non-Abelian evolution of electromagnetic waves in a weakly anisotropic inhomogeneous medium
- Polarization Transport of Transverse Acoustic Waves: Berry Phase and Spin Hall Effect of Phonons
- Topological spin transport of photons: "magnetic monopole" gauge field in Maxwell equations and polarization splitting of rays in periodically inhomogeneous media
- Dynamical Diffraction Theory for Wave Packet Propagation in Deformed Crystals