Signal wave

The fourth electromagnetic wave, shall henceforth be called the signal wave, f ). It always... 

The proper phase shift introduced to the signal wave allows direct measurements of the imaginary part of the resonant nonlinear optical susceptibility, i.e ... 

The existence of the nonlinear polarization field does not ensure the generation of significant signal fields. With the exception of phenomena based on an intensity-dependent refractive index, the generation of the nonlinearly produced signal waves at frequency cos can be treated in the slowly varying amplitude approximation with well-known guided wave coupled mode theory (1). As already explicitly assumed in Equation 1, the amplitudes of the waves are allowed to vary slowly with... 

In this section, the linear (5 = 1) and nonlinear (5 > 1) wave equations for the electric field of the signal wave are analyzed in detail. The difference in the absolute phase of the signal field and that of the induced polarization is examined in the presence of material resonances which generate both complex wave vectors and complex electrical susceptibilities. 

Trainor, P., Krumlauf, R. 2002. Development. Riding the crest of the Wnt signaling wave. Science 297, 781-783. 

The essential point is that there are definite phase relations between pump, signal and idler waves, and this fact establishes a correlation between amplitude and phase of the signal wave. This correlation is illustrated in Fig. 9.100 The four-wave mixing generates new sidebands. If the input contains the frequencies and u)l + <5, the output has the additional sideband co — 8. Thus, the amplitude of one sideband is increased at the cost of the other sideband until both sidebands have equal amplitudes. This maximizes the amplitude modulation of the output. Since the phases... 

Prom the upper left, clockwise, are the derivation management window, con-taining a command menu, derivation history, and current command editing subwindow the current expression window, used to address subexpressions a control window for animating the model a window showing signal wave forms and a window for input to the model. 

---