Brightness of a phase-conjugating mirror behind a random medium
نویسندگان
چکیده
منابع مشابه
Reflection of light from a disordered medium backed by a phase-conjugating mirror
This is a theoretical study of the interplay of optical phase-conjugation and multiple scattering. We calculate the intensity of light reflected by a phaseconjugating mirror when it is placed behind a disordered medium. We compare the results of a fully phase-coherent theory with those from the theory of radiative transfer. Both methods are equivalent if the dwell time τdwell of a photon in the...
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We theoretically analyze wave packet transmission through a phase-conjugating mirror and show that the transmission of a suitably chosen input pulse is superluminal, i.e. the peak of the pulse emerges from the mirror before the time it takes to travel the same distance in vacuum. This pulse reshaping effect can be attributed directly to the dispersion relation in the nonlinear medium constituti...
متن کاملA ug 1 99 7 Reflection of light from a disordered medium backed by a phase - conjugating mirror
This is a theoretical study of the interplay of optical phase-conjugation and multiple scattering. We calculate the intensity of light reflected by a phaseconjugating mirror when it is placed behind a disordered medium. We compare the results of a fully phase-coherent theory with those from the theory of radiative transfer. Both methods are equivalent if the dwell time τdwell of a photon in the...
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A natural language is usually modelled as a subset of the set T ∗ of strings (over some set T of terminals) generated by some grammar G. Thus, T ∗ is divided into two disjoint classes: into grammatical and ungrammatical strings (any string not generated by G is considered ungrammatical). This approach brings along the following problems: – on the theoretical side, it is impossible to rule out c...
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ژورنال
عنوان ژورنال: Europhysics Letters (EPL)
سال: 1997
ISSN: 0295-5075,1286-4854
DOI: 10.1209/epl/i1997-00299-3