Interaction of light waves of arbitrary polarisation on a photorefractive grating in a cubic gyrotropic crystal in an external alternating electric field

Journal Article · Sun Jun 30 00:00:00 EDT 2002 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE2002V032N06ABEH002238· OSTI ID:21470187

Litvinov, Rudol'f V ^[1]

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1. Division of Electronic Devices, Tomsk University of Control Systems and Radioelectronics, Tomsk (Russian Federation)

The symmetric two-wave interaction is considered, for small modulation indices of an interference light pattern, on a transmission photorefractive grating with stationary amplitude produced in a crystal of symmetry group 23 in an external alternating electric field. For an arbitrary off-duty ratio of the external field or arbitrary elliptic polarisation of incident light waves, the space-charge field is shown to contain both shifted and unshifted components, while the polarisation state and intensity of a weak light wave change upon the external field switching. The space-charge-field amplitude and the weak-wave intensity gain are analysed as functions of the interaction wavelength, the off-duty ratio of the external field, and the photorefractive-grating spacing for the longitudinal and transverse interaction geometry at a wavelength of 633 nm in a Bi{sub 12}TiO{sub 20} crystal. (nonlinear optical phenomena)

• OSTI ID: 21470187
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Journal Name: Quantum Electronics (Woodbury, N.Y.) Journal Issue: 6 Vol. 32; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
AMPLIFICATION
AMPLITUDES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CRYSTALS
CUBIC LATTICES
ELECTRIC FIELDS
ELECTROMAGNETIC RADIATION
GAIN
GRATINGS
INTERACTIONS
INTERFERENCE
LIGHT TRANSMISSION
MODULATION
POLARIZATION
RADIATIONS
REFRACTION
SPACE CHARGE
TRANSMISSION
VISIBLE RADIATION
WAVELENGTHS