Fig. 4.7 The analog QWLD model formed by DEs (4.23). We used designations: “
R ”—the
integrator, “”—the multiplier, “+”—the adder, “Ô—the operation of complex conjugation,
“PUMP”—α N0 . The adder is shown with the noise component of the population ξ N
Fig. 4.6 Typical fragmentation of the phase plane for the double-circuit RF oscillator with the
active amplifier A and two resonance circuits F1 and F2 with close (but not equal) fundamental
frequencies (a). Q-factors of the first and second resonance circuits are Q 1 and Q 2 , relatively. At
Q 1 > Q 2 /2the double-frequency mode with amplitudes U 10 , U 20 is established in the system (b),
while at Q 2 > Q 1 /2 the single-frequency mode with amplitudes U 20 and U 10 ¼ 0 (c)
4.2 Constitutive Equations of a Laser
149
R ”—the
integrator, “”—the multiplier, “+”—the adder, “Ô—the operation of complex conjugation,
“PUMP”—α N0 . The adder is shown with the noise component of the population ξ N
Fig. 4.6 Typical fragmentation of the phase plane for the double-circuit RF oscillator with the
active amplifier A and two resonance circuits F1 and F2 with close (but not equal) fundamental
frequencies (a). Q-factors of the first and second resonance circuits are Q 1 and Q 2 , relatively. At
Q 1 > Q 2 /2the double-frequency mode with amplitudes U 10 , U 20 is established in the system (b),
while at Q 2 > Q 1 /2 the single-frequency mode with amplitudes U 20 and U 10 ¼ 0 (c)
4.2 Constitutive Equations of a Laser
149