Parametric reflection upon cascade interaction of focused optical beams

Journal Article · Fri Oct 31 00:00:00 EDT 2008 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE2008V038N10ABEH013861· OSTI ID:21466827

Lobanov, V E; Sukhorukov, A P ^[1]; Sukhorukova, A K ^[2]

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1. M. V. Lomonosov Moscow State University, Faculty of Physics, Moscow (Russian Federation)
2. Russian State Geological Prospecting University, Moscow (Russian Federation)

The parametric reflection of a signal beam in the waist of the reference pump beam upon mismatched three-frequency interaction in a quadratically nonlinear medium is discussed. The critical angle of total internal reflection from the induced defocusing channel is found as a function of the beam waist parameters. It is shown that when the reference beam is focused, this angle increases and some distortions are introduced into the reflected wave due to a finite length of the waist. The modification of the cross section of a wave reflected from a convex parametric mirror is analysed. The optimal beam focusing geometry is found at which the distortions of the shape and divergence of the reflected wave are minimal. Under certain conditions, the signal wave also flows around a cylindrical inhomogeneity produced by the axially symmetric pump beam. The results of theoretical analysis and numerical simulation are in good agreement. (nonlinear optical phenomena)

• OSTI ID: 21466827
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Vol. 38, Issue 10; Other Information: DOI: 10.1070/QE2008v038n10ABEH013861; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
43 PARTICLE ACCELERATORS
AXIAL SYMMETRY
COMPUTERIZED SIMULATION
CROSS SECTIONS
CYLINDRICAL CONFIGURATION
FOCUSING
FREQUENCY MIXING
INTERACTIONS
NONLINEAR PROBLEMS
PHOTON BEAMS
REFLECTION
SIGNALS
THEORETICAL DATA
WAVE PROPAGATION
BEAMS
CONFIGURATION
DATA
INFORMATION
NUMERICAL DATA
SIMULATION
SYMMETRY