Shaping of photorefractive two-wave coupling by fast phase modulation

Autor(en): Ringhofer, KH
Kamenov, VP
Sturman, BI
Chernykh, A
Stichwörter: CRYSTALS; DETECTOR; Physics; Physics, Fluids & Plasmas; Physics, Mathematical
Erscheinungsdatum: 2000
Herausgeber: AMERICAN PHYSICAL SOC
Journal: PHYSICAL REVIEW E
Volumen: 61
Ausgabe: 2
Startseite: 2029
Seitenende: 2037
Zusammenfassung: 
Using the distinctive features of the photorefractive nonlinearity, we derive a general self-consistent set of equations to describe two-wave coupling in the presence of fast and arbitrary strong-phase modulation. By considering a number of important particular cases, we show that phase modulation is a powerful and useful tool for sharing the characteristics of two-wave coupling such as the value of the energy exchange, the diffraction efficiency of the recorded grating, and the structure of the grating fringes. Finally, we analyze the role of the phase modulation in the active stabilization of wave coupling by means of an electronically introduced phase feedback.
ISSN: 1063651X
DOI: 10.1103/PhysRevE.61.2029

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