High-modulation-depth effects in photorefractive wave mixing: influence on pattern formation and physical foundations
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چکیده
منابع مشابه
High-modulation-depth effects in photorefractive wave mixing : influence on pattern formation and physical foundations
Spatio-temporal pattern formation in contra-directional two-wave mixing in photorefractive crystals is investigated both numerically and analytically, taking high-modulation-depth effects into account. We use a modified two-wavemixing model that includes a correction function f ðmÞ, which is introduced as a phenomenological modification. Transverse instabilities arise only if the modulation dep...
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Wave mixing in photorefractive crystals with stable solutions and instabilities
Two-wave and four-wave mixing in photorefractive media with saturable gain and saturable absorption is analyzed. Solutions to wave equations are found in terms of quadratures and implicitly given functions. Different models of saturation are compared. It is found that for weak couplings energy transfer between waves is less effective in the strong unsaturated regime as compared to the saturated...
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ژورنال
عنوان ژورنال: Optics Communications
سال: 2003
ISSN: 0030-4018
DOI: 10.1016/s0030-4018(03)01232-x