Spin-to-orbital momentum conversion via electro-optic Pockels effect in crystals

Journal Article · Sat Oct 15 00:00:00 EDT 2011 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.84.043815· OSTI ID:22093371

Skab, Ihor; Vasylkiv, Yurij; Smaga, Ihor; Vlokh, Rostyslav ^[1]

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1. Institute of Physical Optics, 23 Dragomanov Street, 79005 Lviv (Ukraine)

In the present work we have demonstrated a possibility for operation by orbital angular momentum (OAM) of optical beams via the Pockels effect in solid-crystalline materials. Based on the analysis of an optical Fresnel ellipsoid perturbed by a conically shaped electric field, we have shown that the point groups of crystals convenient for the conversion of spin angular momentum (SAM) to OAM should contain a threefold symmetry axis or a sixfold inversion axis. The results of our experimental studies and theoretical simulations of the SAM-to-OAM conversion efficiency carried out for LiNbO{sub 3} crystals agree well with each other.

• OSTI ID: 22093371
• Journal Information: Physical Review. A, Vol. 84, Issue 4; Other Information: (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
36 MATERIALS SCIENCE
COMPUTERIZED SIMULATION
CONVERSION
CRYSTALS
EFFICIENCY
ELECTRIC FIELDS
LITHIUM COMPOUNDS
NIOBATES
OPERATION
ORBITAL ANGULAR MOMENTUM
SOLIDS
SPIN
SYMMETRY